/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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:48:40,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:48:40,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:48:40,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:48:40,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:48:40,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:48:40,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:48:40,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:48:40,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:48:40,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:48:40,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:48:40,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:48:40,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:48:40,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:48:40,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:48:40,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:48:40,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:48:40,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:48:40,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:48:40,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:48:40,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:48:40,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:48:40,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:48:40,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:48:40,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:48:40,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:48:40,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:48:40,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:48:40,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:48:40,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:48:40,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:48:40,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:48:40,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:48:40,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:48:40,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:48:40,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:48:40,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:48:40,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:48:40,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:48:40,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:48:40,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:48:40,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:48:40,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:48:40,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:48:40,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:48:40,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:48:40,465 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:48:40,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:48:40,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:48:40,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:48:40,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:48:40,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:48:40,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:48:40,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:48:40,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:48:40,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:48:40,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:48:40,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:48:40,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:48:40,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:48:40,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:48:40,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:48:40,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:48:40,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:48:40,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:48:40,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:48:40,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:48:40,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:48:40,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:48:40,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:48:40,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:48:40,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:48:40,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:48:40,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154e6ed9b/486fbaf3c46e44379408c97fca1686e4/FLAG87887fe3c [2020-10-27 05:48:41,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:48:41,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:48:41,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154e6ed9b/486fbaf3c46e44379408c97fca1686e4/FLAG87887fe3c [2020-10-27 05:48:42,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154e6ed9b/486fbaf3c46e44379408c97fca1686e4 [2020-10-27 05:48:42,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:48:42,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:48:42,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:48:42,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:48:42,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:48:42,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707fd674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42, skipping insertion in model container [2020-10-27 05:48:42,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:48:42,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:48:42,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:48:42,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:48:42,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:48:42,633 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:48:42,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42 WrapperNode [2020-10-27 05:48:42,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:48:42,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:48:42,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:48:42,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:48:42,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... [2020-10-27 05:48:42,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:48:42,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:48:42,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:48:42,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:48:42,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:48:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:48:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:48:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:48:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:48:42,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:48:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:48:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:48:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:48:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:48:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:48:42,843 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:48:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:48:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:48:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:48:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:48:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:48:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:48:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:48:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:48:43,941 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:48:43,942 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:48:43,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:43 BoogieIcfgContainer [2020-10-27 05:48:43,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:48:43,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:48:43,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:48:43,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:48:43,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:48:42" (1/3) ... [2020-10-27 05:48:43,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195acda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:43, skipping insertion in model container [2020-10-27 05:48:43,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:42" (2/3) ... [2020-10-27 05:48:43,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195acda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:43, skipping insertion in model container [2020-10-27 05:48:43,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:43" (3/3) ... [2020-10-27 05:48:43,954 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:48:43,965 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:48:43,970 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:48:43,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:48:44,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:48:44,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:48:44,009 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:48:44,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:48:44,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:48:44,010 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:48:44,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:48:44,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:48:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-10-27 05:48:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 05:48:44,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:48:44,048 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] [2020-10-27 05:48:44,048 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:48:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:48:44,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2024411493, now seen corresponding path program 1 times [2020-10-27 05:48:44,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:48:44,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097625057] [2020-10-27 05:48:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:48:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 05:48:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:48:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:48:49,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:48:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:48:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:48:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 05:48:50,059 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:48:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:50,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:50,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:50,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:48:50,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:48:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:48:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:48:50,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097625057] [2020-10-27 05:48:50,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:50,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:48:50,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417989709] [2020-10-27 05:48:50,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:48:50,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:50,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:48:50,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:48:50,212 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 8 states. [2020-10-27 05:48:51,862 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:48:52,126 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:48:52,463 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:48:52,801 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:48:53,169 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:48:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:48:53,993 INFO L93 Difference]: Finished difference Result 838 states and 1374 transitions. [2020-10-27 05:48:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:48:53,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-27 05:48:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:48:54,023 INFO L225 Difference]: With dead ends: 838 [2020-10-27 05:48:54,023 INFO L226 Difference]: Without dead ends: 679 [2020-10-27 05:48:54,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:48:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-10-27 05:48:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 667. [2020-10-27 05:48:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-27 05:48:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1005 transitions. [2020-10-27 05:48:54,174 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1005 transitions. Word has length 85 [2020-10-27 05:48:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:48:54,175 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 1005 transitions. [2020-10-27 05:48:54,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:48:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1005 transitions. [2020-10-27 05:48:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:48:54,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:48:54,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:48:54,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:48:54,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:48:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:48:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1269735936, now seen corresponding path program 1 times [2020-10-27 05:48:54,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:48:54,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467470171] [2020-10-27 05:48:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:48:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:56,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:56,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:48:56,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:48:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2514 [2020-10-27 05:48:56,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:48:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:48:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:48:56,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 05:48:57,205 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:48:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:57,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:57,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:48:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:48:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:48:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:48:57,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467470171] [2020-10-27 05:48:57,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:57,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:48:57,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501817086] [2020-10-27 05:48:57,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:48:57,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:48:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:48:57,302 INFO L87 Difference]: Start difference. First operand 667 states and 1005 transitions. Second operand 6 states. [2020-10-27 05:48:57,673 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:48:58,745 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:48:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:48:59,241 INFO L93 Difference]: Finished difference Result 1604 states and 2467 transitions. [2020-10-27 05:48:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:48:59,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 05:48:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:48:59,250 INFO L225 Difference]: With dead ends: 1604 [2020-10-27 05:48:59,250 INFO L226 Difference]: Without dead ends: 1049 [2020-10-27 05:48:59,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:48:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-10-27 05:48:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1046. [2020-10-27 05:48:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-10-27 05:48:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1593 transitions. [2020-10-27 05:48:59,375 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1593 transitions. Word has length 86 [2020-10-27 05:48:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:48:59,377 INFO L481 AbstractCegarLoop]: Abstraction has 1046 states and 1593 transitions. [2020-10-27 05:48:59,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:48:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1593 transitions. [2020-10-27 05:48:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:48:59,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:48:59,388 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] [2020-10-27 05:48:59,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:48:59,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:48:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:48:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash -752362031, now seen corresponding path program 1 times [2020-10-27 05:48:59,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:48:59,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965210185] [2020-10-27 05:48:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:48:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:49:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:49:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-27 05:49:01,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:49:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:49:02,287 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:02,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:02,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:02,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 05:49:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:49:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:02,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965210185] [2020-10-27 05:49:02,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:02,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:02,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027727905] [2020-10-27 05:49:02,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:02,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:02,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:02,410 INFO L87 Difference]: Start difference. First operand 1046 states and 1593 transitions. Second operand 6 states. [2020-10-27 05:49:02,814 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:49:03,719 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:49:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:04,224 INFO L93 Difference]: Finished difference Result 2693 states and 4176 transitions. [2020-10-27 05:49:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:04,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 05:49:04,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:04,236 INFO L225 Difference]: With dead ends: 2693 [2020-10-27 05:49:04,236 INFO L226 Difference]: Without dead ends: 1793 [2020-10-27 05:49:04,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:49:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-10-27 05:49:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1790. [2020-10-27 05:49:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1790 states. [2020-10-27 05:49:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2752 transitions. [2020-10-27 05:49:04,377 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2752 transitions. Word has length 86 [2020-10-27 05:49:04,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:04,377 INFO L481 AbstractCegarLoop]: Abstraction has 1790 states and 2752 transitions. [2020-10-27 05:49:04,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2752 transitions. [2020-10-27 05:49:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:49:04,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:04,380 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] [2020-10-27 05:49:04,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:49:04,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1565527505, now seen corresponding path program 1 times [2020-10-27 05:49:04,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:04,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452262384] [2020-10-27 05:49:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:06,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:06,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:49:06,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:49:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-27 05:49:06,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:49:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:06,738 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:06,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:06,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:06,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 05:49:06,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:06,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452262384] [2020-10-27 05:49:06,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:06,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:06,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347770382] [2020-10-27 05:49:06,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:06,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:06,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:06,836 INFO L87 Difference]: Start difference. First operand 1790 states and 2752 transitions. Second operand 6 states. [2020-10-27 05:49:07,177 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:49:08,129 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:49:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:08,784 INFO L93 Difference]: Finished difference Result 5027 states and 7803 transitions. [2020-10-27 05:49:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:08,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 05:49:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:08,805 INFO L225 Difference]: With dead ends: 5027 [2020-10-27 05:49:08,806 INFO L226 Difference]: Without dead ends: 3319 [2020-10-27 05:49:08,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:49:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2020-10-27 05:49:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3316. [2020-10-27 05:49:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2020-10-27 05:49:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5118 transitions. [2020-10-27 05:49:09,059 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5118 transitions. Word has length 86 [2020-10-27 05:49:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:09,060 INFO L481 AbstractCegarLoop]: Abstraction has 3316 states and 5118 transitions. [2020-10-27 05:49:09,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5118 transitions. [2020-10-27 05:49:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:49:09,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:09,068 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] [2020-10-27 05:49:09,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:49:09,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash 595332702, now seen corresponding path program 1 times [2020-10-27 05:49:09,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:09,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368073346] [2020-10-27 05:49:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:49:10,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:49:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-27 05:49:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 05:49:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:11,105 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:11,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:11,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:11,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:11,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:49:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:11,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368073346] [2020-10-27 05:49:11,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:11,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:11,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857998936] [2020-10-27 05:49:11,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:11,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:11,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:11,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:11,177 INFO L87 Difference]: Start difference. First operand 3316 states and 5118 transitions. Second operand 6 states. [2020-10-27 05:49:11,525 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:49:12,523 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:49:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:13,321 INFO L93 Difference]: Finished difference Result 9596 states and 14860 transitions. [2020-10-27 05:49:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:13,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 05:49:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:13,361 INFO L225 Difference]: With dead ends: 9596 [2020-10-27 05:49:13,361 INFO L226 Difference]: Without dead ends: 6339 [2020-10-27 05:49:13,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:49:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2020-10-27 05:49:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6336. [2020-10-27 05:49:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6336 states. [2020-10-27 05:49:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 9741 transitions. [2020-10-27 05:49:13,957 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 9741 transitions. Word has length 86 [2020-10-27 05:49:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:13,957 INFO L481 AbstractCegarLoop]: Abstraction has 6336 states and 9741 transitions. [2020-10-27 05:49:13,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 9741 transitions. [2020-10-27 05:49:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:49:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:13,961 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] [2020-10-27 05:49:13,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:49:13,962 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash -357009889, now seen corresponding path program 1 times [2020-10-27 05:49:13,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:13,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517514087] [2020-10-27 05:49:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:15,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:15,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:49:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:49:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1870 [2020-10-27 05:49:15,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:49:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:16,251 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:16,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:16,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:16,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:49:16,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 39 [2020-10-27 05:49:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:16,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517514087] [2020-10-27 05:49:16,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:16,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:16,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432873133] [2020-10-27 05:49:16,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:16,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:16,398 INFO L87 Difference]: Start difference. First operand 6336 states and 9741 transitions. Second operand 6 states. [2020-10-27 05:49:16,851 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:49:17,946 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:49:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:18,910 INFO L93 Difference]: Finished difference Result 18659 states and 28738 transitions. [2020-10-27 05:49:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:18,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:49:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:18,976 INFO L225 Difference]: With dead ends: 18659 [2020-10-27 05:49:18,976 INFO L226 Difference]: Without dead ends: 12391 [2020-10-27 05:49:18,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:49:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12391 states. [2020-10-27 05:49:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12391 to 12388. [2020-10-27 05:49:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12388 states. [2020-10-27 05:49:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12388 states to 12388 states and 18990 transitions. [2020-10-27 05:49:19,949 INFO L78 Accepts]: Start accepts. Automaton has 12388 states and 18990 transitions. Word has length 87 [2020-10-27 05:49:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:19,950 INFO L481 AbstractCegarLoop]: Abstraction has 12388 states and 18990 transitions. [2020-10-27 05:49:19,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12388 states and 18990 transitions. [2020-10-27 05:49:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:49:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:19,957 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] [2020-10-27 05:49:19,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:49:19,957 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash -396969616, now seen corresponding path program 1 times [2020-10-27 05:49:19,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:19,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064435758] [2020-10-27 05:49:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:49:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:49:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3079 [2020-10-27 05:49:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:49:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 05:49:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:23,628 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:23,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:49:23,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:23,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064435758] [2020-10-27 05:49:23,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:23,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:49:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928032706] [2020-10-27 05:49:23,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:49:23,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:23,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:49:23,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:49:23,727 INFO L87 Difference]: Start difference. First operand 12388 states and 18990 transitions. Second operand 11 states. [2020-10-27 05:49:24,175 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:49:26,139 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:49:26,594 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:49:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:30,169 INFO L93 Difference]: Finished difference Result 47021 states and 71733 transitions. [2020-10-27 05:49:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 05:49:30,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-27 05:49:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:30,293 INFO L225 Difference]: With dead ends: 47021 [2020-10-27 05:49:30,293 INFO L226 Difference]: Without dead ends: 41818 [2020-10-27 05:49:30,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:49:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41818 states. [2020-10-27 05:49:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41818 to 12645. [2020-10-27 05:49:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12645 states. [2020-10-27 05:49:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12645 states to 12645 states and 19363 transitions. [2020-10-27 05:49:31,814 INFO L78 Accepts]: Start accepts. Automaton has 12645 states and 19363 transitions. Word has length 87 [2020-10-27 05:49:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:31,814 INFO L481 AbstractCegarLoop]: Abstraction has 12645 states and 19363 transitions. [2020-10-27 05:49:31,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:49:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12645 states and 19363 transitions. [2020-10-27 05:49:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:49:31,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:31,821 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] [2020-10-27 05:49:31,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:49:31,821 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:31,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1623277840, now seen corresponding path program 1 times [2020-10-27 05:49:31,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:31,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279858456] [2020-10-27 05:49:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4742 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:49:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:37,047 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:37,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:37,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:37,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279858456] [2020-10-27 05:49:37,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:37,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:49:37,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329010324] [2020-10-27 05:49:37,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:49:37,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:37,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:49:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:49:37,193 INFO L87 Difference]: Start difference. First operand 12645 states and 19363 transitions. Second operand 11 states. [2020-10-27 05:49:37,569 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:49:39,879 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:49:40,212 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:49:43,892 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:49:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:46,878 INFO L93 Difference]: Finished difference Result 69640 states and 106861 transitions. [2020-10-27 05:49:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 05:49:46,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-27 05:49:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:47,045 INFO L225 Difference]: With dead ends: 69640 [2020-10-27 05:49:47,046 INFO L226 Difference]: Without dead ends: 66825 [2020-10-27 05:49:47,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 05:49:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66825 states. [2020-10-27 05:49:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66825 to 12645. [2020-10-27 05:49:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12645 states. [2020-10-27 05:49:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12645 states to 12645 states and 19361 transitions. [2020-10-27 05:49:48,799 INFO L78 Accepts]: Start accepts. Automaton has 12645 states and 19361 transitions. Word has length 87 [2020-10-27 05:49:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:48,799 INFO L481 AbstractCegarLoop]: Abstraction has 12645 states and 19361 transitions. [2020-10-27 05:49:48,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:49:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12645 states and 19361 transitions. [2020-10-27 05:49:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:49:48,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:48,807 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] [2020-10-27 05:49:48,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:49:48,807 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash -629116464, now seen corresponding path program 1 times [2020-10-27 05:49:48,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:48,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561087396] [2020-10-27 05:49:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:52,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:49:52,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:49:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3562 [2020-10-27 05:49:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:49:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:49:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:52,886 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:52,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:52,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:52,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:49:52,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:49:52,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561087396] [2020-10-27 05:49:52,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:52,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:49:52,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422471127] [2020-10-27 05:49:52,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:49:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:49:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:49:52,978 INFO L87 Difference]: Start difference. First operand 12645 states and 19361 transitions. Second operand 11 states. [2020-10-27 05:49:53,413 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:49:56,088 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:49:56,496 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:50:01,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:50:01,399 INFO L93 Difference]: Finished difference Result 50623 states and 76909 transitions. [2020-10-27 05:50:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:50:01,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-27 05:50:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:50:01,497 INFO L225 Difference]: With dead ends: 50623 [2020-10-27 05:50:01,497 INFO L226 Difference]: Without dead ends: 44180 [2020-10-27 05:50:01,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:50:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44180 states. [2020-10-27 05:50:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44180 to 12905. [2020-10-27 05:50:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12905 states. [2020-10-27 05:50:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12905 states to 12905 states and 19715 transitions. [2020-10-27 05:50:03,122 INFO L78 Accepts]: Start accepts. Automaton has 12905 states and 19715 transitions. Word has length 87 [2020-10-27 05:50:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:50:03,123 INFO L481 AbstractCegarLoop]: Abstraction has 12905 states and 19715 transitions. [2020-10-27 05:50:03,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:50:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12905 states and 19715 transitions. [2020-10-27 05:50:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:50:03,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:50:03,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:50:03,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:50:03,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:50:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:50:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1041864144, now seen corresponding path program 1 times [2020-10-27 05:50:03,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:50:03,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148693282] [2020-10-27 05:50:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:50:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:50:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:50:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-27 05:50:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:50:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:50:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:50:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:06,659 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:50:06,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:50:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:50:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:50:06,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148693282] [2020-10-27 05:50:06,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:50:06,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:50:06,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824634507] [2020-10-27 05:50:06,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:50:06,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:50:06,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:50:06,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:50:06,718 INFO L87 Difference]: Start difference. First operand 12905 states and 19715 transitions. Second operand 11 states. [2020-10-27 05:50:07,151 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:50:09,934 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:50:10,327 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:50:17,308 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:50:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:50:21,057 INFO L93 Difference]: Finished difference Result 95522 states and 146545 transitions. [2020-10-27 05:50:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:50:21,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-27 05:50:21,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:50:21,244 INFO L225 Difference]: With dead ends: 95522 [2020-10-27 05:50:21,245 INFO L226 Difference]: Without dead ends: 85607 [2020-10-27 05:50:21,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 05:50:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85607 states. [2020-10-27 05:50:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85607 to 13215. [2020-10-27 05:50:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-27 05:50:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 20118 transitions. [2020-10-27 05:50:23,910 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 20118 transitions. Word has length 87 [2020-10-27 05:50:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:50:23,910 INFO L481 AbstractCegarLoop]: Abstraction has 13215 states and 20118 transitions. [2020-10-27 05:50:23,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:50:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 20118 transitions. [2020-10-27 05:50:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:50:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:50:23,919 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] [2020-10-27 05:50:23,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:50:23,920 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:50:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:50:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1799574846, now seen corresponding path program 1 times [2020-10-27 05:50:23,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:50:23,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218333604] [2020-10-27 05:50:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:50:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:26,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2656 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:50:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:27,305 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:50:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:50:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:50:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:50:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:50:27,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218333604] [2020-10-27 05:50:27,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:50:27,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:50:27,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108049763] [2020-10-27 05:50:27,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:50:27,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:50:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:50:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:50:27,379 INFO L87 Difference]: Start difference. First operand 13215 states and 20118 transitions. Second operand 11 states. [2020-10-27 05:50:27,793 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:50:30,988 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:50:31,322 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:50:39,830 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:50:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:50:43,333 INFO L93 Difference]: Finished difference Result 93249 states and 142886 transitions. [2020-10-27 05:50:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:50:43,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:50:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:50:43,468 INFO L225 Difference]: With dead ends: 93249 [2020-10-27 05:50:43,468 INFO L226 Difference]: Without dead ends: 81057 [2020-10-27 05:50:43,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 05:50:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81057 states. [2020-10-27 05:50:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81057 to 13545. [2020-10-27 05:50:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13545 states. [2020-10-27 05:50:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13545 states to 13545 states and 20507 transitions. [2020-10-27 05:50:46,129 INFO L78 Accepts]: Start accepts. Automaton has 13545 states and 20507 transitions. Word has length 88 [2020-10-27 05:50:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:50:46,129 INFO L481 AbstractCegarLoop]: Abstraction has 13545 states and 20507 transitions. [2020-10-27 05:50:46,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:50:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 13545 states and 20507 transitions. [2020-10-27 05:50:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:50:46,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:50:46,142 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] [2020-10-27 05:50:46,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:50:46,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:50:46,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:50:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash -231798071, now seen corresponding path program 1 times [2020-10-27 05:50:46,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:50:46,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126725252] [2020-10-27 05:50:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:50:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:46,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:46,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:50:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:50:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-27 05:50:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:50:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 05:50:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:50:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:46,958 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:50:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:50:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:50:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:50:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:50:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:50:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:50:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:50:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:50:47,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126725252] [2020-10-27 05:50:47,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:50:47,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:50:47,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504235990] [2020-10-27 05:50:47,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:50:47,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:50:47,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:50:47,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:50:47,002 INFO L87 Difference]: Start difference. First operand 13545 states and 20507 transitions. Second operand 8 states. [2020-10-27 05:50:47,404 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:50:49,658 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:50:50,012 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:50:50,343 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:50:50,667 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:50:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:50:57,513 INFO L93 Difference]: Finished difference Result 63443 states and 97026 transitions. [2020-10-27 05:50:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:50:57,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 05:50:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:50:57,580 INFO L225 Difference]: With dead ends: 63443 [2020-10-27 05:50:57,580 INFO L226 Difference]: Without dead ends: 51664 [2020-10-27 05:50:57,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:50:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51664 states. [2020-10-27 05:51:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51664 to 26138. [2020-10-27 05:51:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26138 states. [2020-10-27 05:51:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26138 states to 26138 states and 39450 transitions. [2020-10-27 05:51:02,153 INFO L78 Accepts]: Start accepts. Automaton has 26138 states and 39450 transitions. Word has length 88 [2020-10-27 05:51:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:02,154 INFO L481 AbstractCegarLoop]: Abstraction has 26138 states and 39450 transitions. [2020-10-27 05:51:02,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:51:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 26138 states and 39450 transitions. [2020-10-27 05:51:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 05:51:02,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:02,161 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] [2020-10-27 05:51:02,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:51:02,162 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1946937873, now seen corresponding path program 1 times [2020-10-27 05:51:02,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:02,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332759852] [2020-10-27 05:51:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:51:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 05:51:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:51:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:02,718 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:51:02,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:51:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:51:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:51:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:51:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:51:02,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332759852] [2020-10-27 05:51:02,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:02,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:51:02,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228619186] [2020-10-27 05:51:02,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:51:02,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:02,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:51:02,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:51:02,756 INFO L87 Difference]: Start difference. First operand 26138 states and 39450 transitions. Second operand 5 states. [2020-10-27 05:51:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:11,820 INFO L93 Difference]: Finished difference Result 50333 states and 76028 transitions. [2020-10-27 05:51:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:51:11,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-27 05:51:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:11,884 INFO L225 Difference]: With dead ends: 50333 [2020-10-27 05:51:11,885 INFO L226 Difference]: Without dead ends: 50330 [2020-10-27 05:51:11,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:51:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50330 states. [2020-10-27 05:51:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50330 to 26778. [2020-10-27 05:51:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26778 states. [2020-10-27 05:51:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26778 states to 26778 states and 40090 transitions. [2020-10-27 05:51:16,320 INFO L78 Accepts]: Start accepts. Automaton has 26778 states and 40090 transitions. Word has length 89 [2020-10-27 05:51:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:16,320 INFO L481 AbstractCegarLoop]: Abstraction has 26778 states and 40090 transitions. [2020-10-27 05:51:16,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:51:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 26778 states and 40090 transitions. [2020-10-27 05:51:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 05:51:16,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:16,329 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] [2020-10-27 05:51:16,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:51:16,329 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash -353410635, now seen corresponding path program 1 times [2020-10-27 05:51:16,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:16,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103626062] [2020-10-27 05:51:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:51:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:51:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:51:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:16,826 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:51:16,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:16,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:51:16,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:51:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:51:16,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103626062] [2020-10-27 05:51:16,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:16,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:51:16,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831873527] [2020-10-27 05:51:16,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:51:16,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:51:16,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:51:16,864 INFO L87 Difference]: Start difference. First operand 26778 states and 40090 transitions. Second operand 5 states. [2020-10-27 05:51:17,202 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:51:18,777 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:51:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:26,807 INFO L93 Difference]: Finished difference Result 71944 states and 107934 transitions. [2020-10-27 05:51:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:51:26,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 05:51:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:26,879 INFO L225 Difference]: With dead ends: 71944 [2020-10-27 05:51:26,879 INFO L226 Difference]: Without dead ends: 47749 [2020-10-27 05:51:26,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:51:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47749 states. [2020-10-27 05:51:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47749 to 47746. [2020-10-27 05:51:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47746 states. [2020-10-27 05:51:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47746 states to 47746 states and 71050 transitions. [2020-10-27 05:51:34,778 INFO L78 Accepts]: Start accepts. Automaton has 47746 states and 71050 transitions. Word has length 90 [2020-10-27 05:51:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:34,779 INFO L481 AbstractCegarLoop]: Abstraction has 47746 states and 71050 transitions. [2020-10-27 05:51:34,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:51:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 47746 states and 71050 transitions. [2020-10-27 05:51:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 05:51:34,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:34,787 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] [2020-10-27 05:51:34,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:51:34,787 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash -704774926, now seen corresponding path program 1 times [2020-10-27 05:51:34,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:34,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228638592] [2020-10-27 05:51:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:35,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 05:51:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:51:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2676 [2020-10-27 05:51:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:51:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:51:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:51:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:38,180 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:51:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:38,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:51:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:51:38,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228638592] [2020-10-27 05:51:38,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:38,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:51:38,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496737650] [2020-10-27 05:51:38,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:51:38,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:38,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:51:38,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:51:38,243 INFO L87 Difference]: Start difference. First operand 47746 states and 71050 transitions. Second operand 10 states. [2020-10-27 05:51:38,669 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:51:41,535 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:51:42,124 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 194