/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:05:09,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:05:09,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:05:09,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:05:09,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:05:09,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:05:09,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:05:09,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:05:09,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:05:09,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:05:09,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:05:09,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:05:09,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:05:09,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:05:09,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:05:09,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:05:09,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:05:09,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:05:09,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:05:09,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:05:09,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:05:09,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:05:09,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:05:09,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:05:09,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:05:09,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:05:09,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:05:09,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:05:09,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:05:09,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:05:09,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:05:09,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:05:09,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:05:09,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:05:09,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:05:09,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:05:09,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:05:09,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:05:09,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:05:09,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:05:09,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:05:09,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:05:09,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:05:09,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:05:09,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:05:09,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:05:09,409 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:05:09,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:05:09,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:05:09,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:05:09,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:05:09,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:05:09,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:05:09,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:05:09,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:05:09,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:05:09,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:05:09,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:05:09,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:05:09,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:05:09,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:05:09,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:05:09,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:05:09,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:05:09,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:05:09,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:05:09,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:05:09,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:05:09,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:05:09,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:05:09,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:05:09,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:05:09,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:05:09,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:05:09,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:05:09,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:05:09,849 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:05:09,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 06:05:09,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25ed859d/d4b71206223344f1b353256ba105efa2/FLAG685ca6860 [2020-10-27 06:05:10,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:05:10,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 06:05:10,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25ed859d/d4b71206223344f1b353256ba105efa2/FLAG685ca6860 [2020-10-27 06:05:10,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25ed859d/d4b71206223344f1b353256ba105efa2 [2020-10-27 06:05:10,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:05:10,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:05:10,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:05:10,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:05:10,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:05:10,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:05:10" (1/1) ... [2020-10-27 06:05:10,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab83a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:10, skipping insertion in model container [2020-10-27 06:05:10,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:05:10" (1/1) ... [2020-10-27 06:05:10,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:05:11,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:05:11,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:05:11,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:05:11,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:05:11,689 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:05:11,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11 WrapperNode [2020-10-27 06:05:11,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:05:11,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:05:11,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:05:11,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:05:11,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... [2020-10-27 06:05:11,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:05:11,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:05:11,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:05:11,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:05:11,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:05:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:05:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:05:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:05:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:05:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:05:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:05:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:05:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:05:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:05:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:05:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:05:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:05:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:05:13,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:05:13,396 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:05:13,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:05:13 BoogieIcfgContainer [2020-10-27 06:05:13,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:05:13,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:05:13,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:05:13,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:05:13,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:05:10" (1/3) ... [2020-10-27 06:05:13,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66425e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:05:13, skipping insertion in model container [2020-10-27 06:05:13,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:11" (2/3) ... [2020-10-27 06:05:13,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66425e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:05:13, skipping insertion in model container [2020-10-27 06:05:13,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:05:13" (3/3) ... [2020-10-27 06:05:13,408 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 06:05:13,421 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:05:13,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:05:13,441 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:05:13,472 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:05:13,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:05:13,472 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:05:13,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:05:13,473 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:05:13,473 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:05:13,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:05:13,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:05:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2020-10-27 06:05:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 06:05:13,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:13,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:13,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:13,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash -566979542, now seen corresponding path program 1 times [2020-10-27 06:05:13,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:13,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143411553] [2020-10-27 06:05:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 06:05:19,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:05:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:05:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:05:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 06:05:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:05:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 06:05:19,996 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:05:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:05:20,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:20,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143411553] [2020-10-27 06:05:20,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:20,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:05:20,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950412322] [2020-10-27 06:05:20,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:05:20,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:20,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:05:20,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:05:20,178 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2020-10-27 06:05:20,940 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-27 06:05:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:23,452 INFO L93 Difference]: Finished difference Result 641 states and 1106 transitions. [2020-10-27 06:05:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:05:23,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 06:05:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:23,494 INFO L225 Difference]: With dead ends: 641 [2020-10-27 06:05:23,494 INFO L226 Difference]: Without dead ends: 479 [2020-10-27 06:05:23,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-27 06:05:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2020-10-27 06:05:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 06:05:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 784 transitions. [2020-10-27 06:05:23,613 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 784 transitions. Word has length 123 [2020-10-27 06:05:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:23,614 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 784 transitions. [2020-10-27 06:05:23,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:05:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 784 transitions. [2020-10-27 06:05:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 06:05:23,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:23,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:23,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:05:23,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:23,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2031093836, now seen corresponding path program 1 times [2020-10-27 06:05:23,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:23,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374135220] [2020-10-27 06:05:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 06:05:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:05:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 06:05:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 06:05:29,440 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:05:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:29,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:05:29,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:29,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374135220] [2020-10-27 06:05:29,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:29,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:29,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805233776] [2020-10-27 06:05:29,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:29,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:29,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:29,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:29,604 INFO L87 Difference]: Start difference. First operand 476 states and 784 transitions. Second operand 5 states. [2020-10-27 06:05:32,571 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:05:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:32,710 INFO L93 Difference]: Finished difference Result 1389 states and 2291 transitions. [2020-10-27 06:05:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:32,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 06:05:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:32,720 INFO L225 Difference]: With dead ends: 1389 [2020-10-27 06:05:32,720 INFO L226 Difference]: Without dead ends: 926 [2020-10-27 06:05:32,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-27 06:05:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2020-10-27 06:05:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-10-27 06:05:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1514 transitions. [2020-10-27 06:05:32,843 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1514 transitions. Word has length 126 [2020-10-27 06:05:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:32,844 INFO L481 AbstractCegarLoop]: Abstraction has 923 states and 1514 transitions. [2020-10-27 06:05:32,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1514 transitions. [2020-10-27 06:05:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 06:05:32,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:32,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:32,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:05:32,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -410002494, now seen corresponding path program 1 times [2020-10-27 06:05:32,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:32,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426891136] [2020-10-27 06:05:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:37,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 06:05:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:05:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:05:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 06:05:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:38,675 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:05:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:38,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:38,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:05:38,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:38,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426891136] [2020-10-27 06:05:38,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:38,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:38,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393779111] [2020-10-27 06:05:38,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:38,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:38,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:38,809 INFO L87 Difference]: Start difference. First operand 923 states and 1514 transitions. Second operand 5 states. [2020-10-27 06:05:41,961 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:05:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:42,103 INFO L93 Difference]: Finished difference Result 2645 states and 4334 transitions. [2020-10-27 06:05:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:42,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 06:05:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:42,115 INFO L225 Difference]: With dead ends: 2645 [2020-10-27 06:05:42,115 INFO L226 Difference]: Without dead ends: 1774 [2020-10-27 06:05:42,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-10-27 06:05:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1771. [2020-10-27 06:05:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2020-10-27 06:05:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2887 transitions. [2020-10-27 06:05:42,226 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2887 transitions. Word has length 127 [2020-10-27 06:05:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:42,227 INFO L481 AbstractCegarLoop]: Abstraction has 1771 states and 2887 transitions. [2020-10-27 06:05:42,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2887 transitions. [2020-10-27 06:05:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 06:05:42,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:42,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:42,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:05:42,234 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:42,234 INFO L82 PathProgramCache]: Analyzing trace with hash 376600122, now seen corresponding path program 1 times [2020-10-27 06:05:42,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:42,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453009931] [2020-10-27 06:05:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:47,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 06:05:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:05:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:05:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:48,100 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:05:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:48,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453009931] [2020-10-27 06:05:48,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:48,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:48,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616174332] [2020-10-27 06:05:48,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:48,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:48,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:48,223 INFO L87 Difference]: Start difference. First operand 1771 states and 2887 transitions. Second operand 5 states. [2020-10-27 06:05:51,278 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:05:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:51,405 INFO L93 Difference]: Finished difference Result 5217 states and 8502 transitions. [2020-10-27 06:05:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:51,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 06:05:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:51,428 INFO L225 Difference]: With dead ends: 5217 [2020-10-27 06:05:51,428 INFO L226 Difference]: Without dead ends: 3469 [2020-10-27 06:05:51,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-10-27 06:05:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3466. [2020-10-27 06:05:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3466 states. [2020-10-27 06:05:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5616 transitions. [2020-10-27 06:05:51,638 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5616 transitions. Word has length 127 [2020-10-27 06:05:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:51,638 INFO L481 AbstractCegarLoop]: Abstraction has 3466 states and 5616 transitions. [2020-10-27 06:05:51,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5616 transitions. [2020-10-27 06:05:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 06:05:51,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:51,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:51,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:05:51,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1947180014, now seen corresponding path program 1 times [2020-10-27 06:05:51,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:51,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003865832] [2020-10-27 06:05:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:56,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 06:05:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 06:05:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 06:05:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:57,528 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:05:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:57,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:57,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:05:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:57,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003865832] [2020-10-27 06:05:57,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:57,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:57,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379159507] [2020-10-27 06:05:57,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:57,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:57,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:57,660 INFO L87 Difference]: Start difference. First operand 3466 states and 5616 transitions. Second operand 5 states. [2020-10-27 06:06:01,376 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:06:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:01,568 INFO L93 Difference]: Finished difference Result 9876 states and 15968 transitions. [2020-10-27 06:06:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:01,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 06:06:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:01,610 INFO L225 Difference]: With dead ends: 9876 [2020-10-27 06:06:01,610 INFO L226 Difference]: Without dead ends: 6749 [2020-10-27 06:06:01,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2020-10-27 06:06:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6746. [2020-10-27 06:06:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6746 states. [2020-10-27 06:06:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 10884 transitions. [2020-10-27 06:06:02,217 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 10884 transitions. Word has length 128 [2020-10-27 06:06:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:02,218 INFO L481 AbstractCegarLoop]: Abstraction has 6746 states and 10884 transitions. [2020-10-27 06:06:02,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 10884 transitions. [2020-10-27 06:06:02,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 06:06:02,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:02,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:02,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:06:02,240 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1518952167, now seen corresponding path program 1 times [2020-10-27 06:06:02,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:02,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857301650] [2020-10-27 06:06:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 06:06:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:08,120 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:06:08,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:08,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857301650] [2020-10-27 06:06:08,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:08,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:08,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888804599] [2020-10-27 06:06:08,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:08,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:08,223 INFO L87 Difference]: Start difference. First operand 6746 states and 10884 transitions. Second operand 5 states. [2020-10-27 06:06:12,142 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:06:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:12,435 INFO L93 Difference]: Finished difference Result 19517 states and 31427 transitions. [2020-10-27 06:06:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:12,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 06:06:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:12,506 INFO L225 Difference]: With dead ends: 19517 [2020-10-27 06:06:12,506 INFO L226 Difference]: Without dead ends: 13274 [2020-10-27 06:06:12,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13274 states. [2020-10-27 06:06:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13274 to 13271. [2020-10-27 06:06:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13271 states. [2020-10-27 06:06:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 21287 transitions. [2020-10-27 06:06:13,635 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 21287 transitions. Word has length 128 [2020-10-27 06:06:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 13271 states and 21287 transitions. [2020-10-27 06:06:13,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 21287 transitions. [2020-10-27 06:06:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 06:06:13,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:13,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:13,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:06:13,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash 42968274, now seen corresponding path program 1 times [2020-10-27 06:06:13,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:13,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638916121] [2020-10-27 06:06:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 06:06:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 06:06:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:19,573 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:06:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:19,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:06:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:19,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638916121] [2020-10-27 06:06:19,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:19,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:06:19,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595644773] [2020-10-27 06:06:19,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 06:06:19,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:19,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 06:06:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 06:06:19,673 INFO L87 Difference]: Start difference. First operand 13271 states and 21287 transitions. Second operand 8 states. [2020-10-27 06:06:20,461 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:06:24,484 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-27 06:06:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:25,721 INFO L93 Difference]: Finished difference Result 30511 states and 49683 transitions. [2020-10-27 06:06:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:06:25,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-27 06:06:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:25,789 INFO L225 Difference]: With dead ends: 30511 [2020-10-27 06:06:25,789 INFO L226 Difference]: Without dead ends: 23274 [2020-10-27 06:06:25,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:06:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23274 states. [2020-10-27 06:06:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23274 to 13431. [2020-10-27 06:06:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13431 states. [2020-10-27 06:06:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13431 states to 13431 states and 21431 transitions. [2020-10-27 06:06:27,220 INFO L78 Accepts]: Start accepts. Automaton has 13431 states and 21431 transitions. Word has length 129 [2020-10-27 06:06:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:27,220 INFO L481 AbstractCegarLoop]: Abstraction has 13431 states and 21431 transitions. [2020-10-27 06:06:27,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 06:06:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 13431 states and 21431 transitions. [2020-10-27 06:06:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 06:06:27,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:27,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:27,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:06:27,252 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash -221632371, now seen corresponding path program 1 times [2020-10-27 06:06:27,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:27,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252726706] [2020-10-27 06:06:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:32,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:06:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:33,011 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:06:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:33,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252726706] [2020-10-27 06:06:33,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:33,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:33,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425975208] [2020-10-27 06:06:33,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:33,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:33,094 INFO L87 Difference]: Start difference. First operand 13431 states and 21431 transitions. Second operand 5 states. [2020-10-27 06:06:37,528 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:06:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:38,039 INFO L93 Difference]: Finished difference Result 38661 states and 61531 transitions. [2020-10-27 06:06:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:38,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 06:06:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:38,109 INFO L225 Difference]: With dead ends: 38661 [2020-10-27 06:06:38,109 INFO L226 Difference]: Without dead ends: 25890 [2020-10-27 06:06:38,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25890 states. [2020-10-27 06:06:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25890 to 25887. [2020-10-27 06:06:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25887 states. [2020-10-27 06:06:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25887 states to 25887 states and 40951 transitions. [2020-10-27 06:06:40,236 INFO L78 Accepts]: Start accepts. Automaton has 25887 states and 40951 transitions. Word has length 129 [2020-10-27 06:06:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:40,236 INFO L481 AbstractCegarLoop]: Abstraction has 25887 states and 40951 transitions. [2020-10-27 06:06:40,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 25887 states and 40951 transitions. [2020-10-27 06:06:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 06:06:40,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:40,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:40,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:06:40,281 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:40,282 INFO L82 PathProgramCache]: Analyzing trace with hash 375050734, now seen corresponding path program 1 times [2020-10-27 06:06:40,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:40,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912445712] [2020-10-27 06:06:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:45,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 06:06:45,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:06:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4858 [2020-10-27 06:06:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:06:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 06:06:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 06:06:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:45,866 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:06:45,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:45,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:45,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:06:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:45,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912445712] [2020-10-27 06:06:45,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:45,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:06:45,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068904029] [2020-10-27 06:06:45,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:06:45,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:06:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:06:45,924 INFO L87 Difference]: Start difference. First operand 25887 states and 40951 transitions. Second operand 4 states. [2020-10-27 06:06:46,612 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-27 06:06:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:51,008 INFO L93 Difference]: Finished difference Result 55589 states and 89339 transitions. [2020-10-27 06:06:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:06:51,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 06:06:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:51,110 INFO L225 Difference]: With dead ends: 55589 [2020-10-27 06:06:51,110 INFO L226 Difference]: Without dead ends: 40130 [2020-10-27 06:06:51,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40130 states. [2020-10-27 06:06:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40130 to 40127. [2020-10-27 06:06:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40127 states. [2020-10-27 06:06:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40127 states to 40127 states and 63959 transitions. [2020-10-27 06:06:54,415 INFO L78 Accepts]: Start accepts. Automaton has 40127 states and 63959 transitions. Word has length 129 [2020-10-27 06:06:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:54,415 INFO L481 AbstractCegarLoop]: Abstraction has 40127 states and 63959 transitions. [2020-10-27 06:06:54,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:06:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40127 states and 63959 transitions. [2020-10-27 06:06:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 06:06:54,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:54,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:54,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:06:54,452 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1866603903, now seen corresponding path program 1 times [2020-10-27 06:06:54,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:54,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722487074] [2020-10-27 06:06:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 06:06:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:00,252 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:07:00,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:00,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:00,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:00,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:07:00,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:00,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722487074] [2020-10-27 06:07:00,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:00,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:00,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302140886] [2020-10-27 06:07:00,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:00,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:00,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:00,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:00,343 INFO L87 Difference]: Start difference. First operand 40127 states and 63959 transitions. Second operand 5 states. [2020-10-27 06:07:06,310 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:07:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:09,327 INFO L93 Difference]: Finished difference Result 116899 states and 185984 transitions. [2020-10-27 06:07:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:09,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-27 06:07:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:09,586 INFO L225 Difference]: With dead ends: 116899 [2020-10-27 06:07:09,586 INFO L226 Difference]: Without dead ends: 78304 [2020-10-27 06:07:09,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78304 states. [2020-10-27 06:07:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78304 to 78301. [2020-10-27 06:07:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78301 states. [2020-10-27 06:07:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78301 states to 78301 states and 123964 transitions. [2020-10-27 06:07:16,949 INFO L78 Accepts]: Start accepts. Automaton has 78301 states and 123964 transitions. Word has length 133 [2020-10-27 06:07:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:16,950 INFO L481 AbstractCegarLoop]: Abstraction has 78301 states and 123964 transitions. [2020-10-27 06:07:16,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 78301 states and 123964 transitions. [2020-10-27 06:07:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 06:07:17,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:17,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:17,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:07:17,003 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1043413066, now seen corresponding path program 1 times [2020-10-27 06:07:17,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:17,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995091982] [2020-10-27 06:07:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:22,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:22,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:07:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:22,800 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:07:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:07:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:22,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995091982] [2020-10-27 06:07:22,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:22,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:22,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896273111] [2020-10-27 06:07:22,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:22,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:22,899 INFO L87 Difference]: Start difference. First operand 78301 states and 123964 transitions. Second operand 5 states. [2020-10-27 06:07:32,259 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:07:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:39,245 INFO L93 Difference]: Finished difference Result 227695 states and 359756 transitions. [2020-10-27 06:07:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:39,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-27 06:07:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:39,594 INFO L225 Difference]: With dead ends: 227695 [2020-10-27 06:07:39,594 INFO L226 Difference]: Without dead ends: 152024 [2020-10-27 06:07:39,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152024 states. [2020-10-27 06:07:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152024 to 152021. [2020-10-27 06:07:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152021 states. [2020-10-27 06:07:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152021 states to 152021 states and 238872 transitions. [2020-10-27 06:07:53,596 INFO L78 Accepts]: Start accepts. Automaton has 152021 states and 238872 transitions. Word has length 134 [2020-10-27 06:07:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:53,597 INFO L481 AbstractCegarLoop]: Abstraction has 152021 states and 238872 transitions. [2020-10-27 06:07:53,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 152021 states and 238872 transitions. [2020-10-27 06:07:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 06:07:53,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:53,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:53,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:07:53,702 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 531564901, now seen corresponding path program 1 times [2020-10-27 06:07:53,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:53,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029559899] [2020-10-27 06:07:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 06:07:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:07:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:59,490 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 06:07:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:59,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029559899] [2020-10-27 06:07:59,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:59,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:59,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525317174] [2020-10-27 06:07:59,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:59,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:59,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:59,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:59,551 INFO L87 Difference]: Start difference. First operand 152021 states and 238872 transitions. Second operand 5 states. [2020-10-27 06:08:13,522 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 06:08:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:28,671 INFO L93 Difference]: Finished difference Result 448305 states and 703680 transitions. [2020-10-27 06:08:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:28,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-27 06:08:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:29,639 INFO L225 Difference]: With dead ends: 448305 [2020-10-27 06:08:29,639 INFO L226 Difference]: Without dead ends: 296529 [2020-10-27 06:08:29,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296529 states.