/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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:46:24,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:46:24,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:46:24,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:46:24,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:46:24,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:46:24,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:46:24,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:46:24,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:46:24,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:46:24,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:46:24,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:46:24,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:46:24,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:46:24,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:46:24,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:46:24,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:46:24,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:46:24,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:46:24,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:46:24,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:46:24,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:46:24,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:46:24,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:46:24,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:46:24,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:46:24,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:46:24,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:46:24,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:46:24,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:46:24,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:46:24,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:46:24,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:46:24,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:46:24,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:46:24,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:46:24,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:46:24,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:46:24,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:46:24,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:46:24,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:46:24,346 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 05:46:24,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:46:24,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:46:24,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:46:24,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:46:24,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:46:24,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:46:24,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:46:24,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:46:24,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:46:24,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:46:24,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:46:24,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:46:24,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:46:24,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:46:24,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:46:24,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:46:24,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:46:24,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:46:24,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:46:24,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:46:24,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:46:24,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:46:24,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:46:24,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:46:24,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:46:24,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:46:24,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:46:24,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:46:24,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:46:24,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:46:24,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:46:24,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:46:24,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:46:24,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:46:24,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:46:24,833 INFO L432 ainManager$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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:46:24,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e58a237/10c74db5d2a447ef85c08ca77ef7a159/FLAGb12bbeb0d [2020-10-27 05:46:25,591 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:46:25,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:46:25,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e58a237/10c74db5d2a447ef85c08ca77ef7a159/FLAGb12bbeb0d [2020-10-27 05:46:25,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e58a237/10c74db5d2a447ef85c08ca77ef7a159 [2020-10-27 05:46:25,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:46:25,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:46:25,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:46:25,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:46:25,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:46:25,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:25" (1/1) ... [2020-10-27 05:46:25,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3f0c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:25, skipping insertion in model container [2020-10-27 05:46:25,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:25" (1/1) ... [2020-10-27 05:46:25,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:46:25,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:46:26,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:46:26,303 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:46:26,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:46:26,473 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:46:26,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26 WrapperNode [2020-10-27 05:46:26,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:46:26,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:46:26,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:46:26,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:46:26,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (1/1) ... [2020-10-27 05:46:26,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:46:26,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:46:26,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:46:26,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:46:26,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (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 05:46:26,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:46:26,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:46:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:46:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:46:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:46:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:46:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:46:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:46:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:46:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:46:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:46:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:46:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:46:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:46:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:46:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:46:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:46:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:46:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:46:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:46:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:46:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:46:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:46:27,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:46:27,713 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:46:27,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:27 BoogieIcfgContainer [2020-10-27 05:46:27,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:46:27,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:46:27,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:46:27,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:46:27,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:46:25" (1/3) ... [2020-10-27 05:46:27,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebc6237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:27, skipping insertion in model container [2020-10-27 05:46:27,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:26" (2/3) ... [2020-10-27 05:46:27,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebc6237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:27, skipping insertion in model container [2020-10-27 05:46:27,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:27" (3/3) ... [2020-10-27 05:46:27,724 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 05:46:27,735 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:46:27,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:46:27,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:46:27,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:46:27,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:46:27,782 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:46:27,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:46:27,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:46:27,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:46:27,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:46:27,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:46:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states. [2020-10-27 05:46:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:46:27,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:27,817 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 05:46:27,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash -768834611, now seen corresponding path program 1 times [2020-10-27 05:46:27,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:27,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338682720] [2020-10-27 05:46:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:32,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:32,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:46:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4594 [2020-10-27 05:46:32,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:46:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:46:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:46:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:46:33,302 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:46:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:33,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:46:33,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:46:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:46:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:46:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:33,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338682720] [2020-10-27 05:46:33,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:33,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:46:33,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806496528] [2020-10-27 05:46:33,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:46:33,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:46:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:46:33,558 INFO L87 Difference]: Start difference. First operand 225 states. Second operand 8 states. [2020-10-27 05:46:35,610 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:46:35,949 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:46:36,254 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:46:36,594 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:46:36,918 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:46:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:38,137 INFO L93 Difference]: Finished difference Result 867 states and 1421 transitions. [2020-10-27 05:46:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:46:38,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-27 05:46:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:38,175 INFO L225 Difference]: With dead ends: 867 [2020-10-27 05:46:38,175 INFO L226 Difference]: Without dead ends: 703 [2020-10-27 05:46:38,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:46:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-27 05:46:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 691. [2020-10-27 05:46:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-27 05:46:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1043 transitions. [2020-10-27 05:46:38,319 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1043 transitions. Word has length 86 [2020-10-27 05:46:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:38,320 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 1043 transitions. [2020-10-27 05:46:38,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:46:38,321 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1043 transitions. [2020-10-27 05:46:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:46:38,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:38,336 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 05:46:38,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:46:38,337 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1006016014, now seen corresponding path program 1 times [2020-10-27 05:46:38,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:38,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287142734] [2020-10-27 05:46:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:40,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:46:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2382 [2020-10-27 05:46:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:46:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 05:46:41,305 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:46:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:41,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:41,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 05:46:41,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:46:41,406 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 05:46:41,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287142734] [2020-10-27 05:46:41,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:41,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:46:41,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721320003] [2020-10-27 05:46:41,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:46:41,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:41,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:46:41,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:46:41,410 INFO L87 Difference]: Start difference. First operand 691 states and 1043 transitions. Second operand 6 states. [2020-10-27 05:46:41,786 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:46:42,756 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:46:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:43,266 INFO L93 Difference]: Finished difference Result 1812 states and 2788 transitions. [2020-10-27 05:46:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:46:43,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:46:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:43,275 INFO L225 Difference]: With dead ends: 1812 [2020-10-27 05:46:43,275 INFO L226 Difference]: Without dead ends: 1168 [2020-10-27 05:46:43,284 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 05:46:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-10-27 05:46:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1165. [2020-10-27 05:46:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-27 05:46:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1783 transitions. [2020-10-27 05:46:43,404 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1783 transitions. Word has length 87 [2020-10-27 05:46:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:43,404 INFO L481 AbstractCegarLoop]: Abstraction has 1165 states and 1783 transitions. [2020-10-27 05:46:43,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:46:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1783 transitions. [2020-10-27 05:46:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:46:43,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:43,409 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 05:46:43,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:46:43,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:43,410 INFO L82 PathProgramCache]: Analyzing trace with hash 328866853, now seen corresponding path program 1 times [2020-10-27 05:46:43,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:43,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503877023] [2020-10-27 05:46:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:46:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2337 [2020-10-27 05:46:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:46:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:46,133 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:46:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:46,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:46:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:46,203 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 05:46:46,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503877023] [2020-10-27 05:46:46,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:46,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:46:46,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114804306] [2020-10-27 05:46:46,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:46:46,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:46:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:46:46,206 INFO L87 Difference]: Start difference. First operand 1165 states and 1783 transitions. Second operand 6 states. [2020-10-27 05:46:46,511 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:46:47,517 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:46:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:48,089 INFO L93 Difference]: Finished difference Result 3006 states and 4655 transitions. [2020-10-27 05:46:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:46:48,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:46:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:48,104 INFO L225 Difference]: With dead ends: 3006 [2020-10-27 05:46:48,104 INFO L226 Difference]: Without dead ends: 1957 [2020-10-27 05:46:48,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:46:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2020-10-27 05:46:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1954. [2020-10-27 05:46:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2020-10-27 05:46:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3001 transitions. [2020-10-27 05:46:48,246 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3001 transitions. Word has length 87 [2020-10-27 05:46:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:48,247 INFO L481 AbstractCegarLoop]: Abstraction has 1954 states and 3001 transitions. [2020-10-27 05:46:48,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:46:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3001 transitions. [2020-10-27 05:46:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:46:48,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:48,250 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 05:46:48,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:46:48,251 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1156274742, now seen corresponding path program 1 times [2020-10-27 05:46:48,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:48,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625197511] [2020-10-27 05:46:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:46:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:50,628 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:46:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:50,695 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 05:46:50,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625197511] [2020-10-27 05:46:50,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:50,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:46:50,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324194998] [2020-10-27 05:46:50,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:46:50,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:46:50,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:46:50,698 INFO L87 Difference]: Start difference. First operand 1954 states and 3001 transitions. Second operand 6 states. [2020-10-27 05:46:51,022 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:46:51,926 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:46:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:52,586 INFO L93 Difference]: Finished difference Result 5331 states and 8276 transitions. [2020-10-27 05:46:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:46:52,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:46:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:52,606 INFO L225 Difference]: With dead ends: 5331 [2020-10-27 05:46:52,607 INFO L226 Difference]: Without dead ends: 3527 [2020-10-27 05:46:52,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:46:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2020-10-27 05:46:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3524. [2020-10-27 05:46:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3524 states. [2020-10-27 05:46:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 5438 transitions. [2020-10-27 05:46:52,855 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 5438 transitions. Word has length 87 [2020-10-27 05:46:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:52,855 INFO L481 AbstractCegarLoop]: Abstraction has 3524 states and 5438 transitions. [2020-10-27 05:46:52,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:46:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 5438 transitions. [2020-10-27 05:46:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:46:52,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:52,859 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 05:46:52,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:46:52,859 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1292798484, now seen corresponding path program 1 times [2020-10-27 05:46:52,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:52,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890630064] [2020-10-27 05:46:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1973 [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:46:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:55,205 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:46:55,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:55,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:55,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890630064] [2020-10-27 05:46:55,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:55,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:46:55,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979126476] [2020-10-27 05:46:55,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:46:55,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:55,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:46:55,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:46:55,273 INFO L87 Difference]: Start difference. First operand 3524 states and 5438 transitions. Second operand 6 states. [2020-10-27 05:46:55,621 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:46:56,585 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:46:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:57,314 INFO L93 Difference]: Finished difference Result 10161 states and 15757 transitions. [2020-10-27 05:46:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:46:57,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:46:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:57,349 INFO L225 Difference]: With dead ends: 10161 [2020-10-27 05:46:57,349 INFO L226 Difference]: Without dead ends: 6723 [2020-10-27 05:46:57,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:46:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2020-10-27 05:46:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 6720. [2020-10-27 05:46:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6720 states. [2020-10-27 05:46:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 10362 transitions. [2020-10-27 05:46:57,916 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 10362 transitions. Word has length 87 [2020-10-27 05:46:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:57,917 INFO L481 AbstractCegarLoop]: Abstraction has 6720 states and 10362 transitions. [2020-10-27 05:46:57,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:46:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 10362 transitions. [2020-10-27 05:46:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 05:46:57,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:57,921 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 05:46:57,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:46:57,922 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash -502733821, now seen corresponding path program 1 times [2020-10-27 05:46:57,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:57,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095169686] [2020-10-27 05:46:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:59,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:46:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:00,091 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:47:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:47:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:00,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:00,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:47:00,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:47:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 05:47:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:47:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:47:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:47:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:47:00,193 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 05:47:00,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095169686] [2020-10-27 05:47:00,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:47:00,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:47:00,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893355718] [2020-10-27 05:47:00,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:47:00,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:47:00,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:47:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:47:00,199 INFO L87 Difference]: Start difference. First operand 6720 states and 10362 transitions. Second operand 6 states. [2020-10-27 05:47:00,591 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:47:01,556 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:47:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:02,445 INFO L93 Difference]: Finished difference Result 19708 states and 30410 transitions. [2020-10-27 05:47:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:47:02,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 05:47:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:02,507 INFO L225 Difference]: With dead ends: 19708 [2020-10-27 05:47:02,507 INFO L226 Difference]: Without dead ends: 13051 [2020-10-27 05:47:02,523 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 05:47:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13051 states. [2020-10-27 05:47:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13051 to 13048. [2020-10-27 05:47:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13048 states. [2020-10-27 05:47:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13048 states to 13048 states and 19987 transitions. [2020-10-27 05:47:03,458 INFO L78 Accepts]: Start accepts. Automaton has 13048 states and 19987 transitions. Word has length 87 [2020-10-27 05:47:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:03,459 INFO L481 AbstractCegarLoop]: Abstraction has 13048 states and 19987 transitions. [2020-10-27 05:47:03,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:47:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 13048 states and 19987 transitions. [2020-10-27 05:47:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:47:03,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:03,465 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 05:47:03,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:47:03,466 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1462449304, now seen corresponding path program 1 times [2020-10-27 05:47:03,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:03,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053593222] [2020-10-27 05:47:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:08,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4593 [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:47:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:47:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:47:08,544 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:47:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:47:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:08,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:08,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:47:08,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:47:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:47:08,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:47:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:47:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:47:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:08,630 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 05:47:08,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053593222] [2020-10-27 05:47:08,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:47:08,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:47:08,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146097345] [2020-10-27 05:47:08,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:47:08,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:47:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:47:08,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:47:08,633 INFO L87 Difference]: Start difference. First operand 13048 states and 19987 transitions. Second operand 11 states. [2020-10-27 05:47:09,027 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:47:11,449 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:47:11,870 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:47:16,568 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:47:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:18,382 INFO L93 Difference]: Finished difference Result 96773 states and 148457 transitions. [2020-10-27 05:47:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:47:18,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:47:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:18,696 INFO L225 Difference]: With dead ends: 96773 [2020-10-27 05:47:18,697 INFO L226 Difference]: Without dead ends: 84162 [2020-10-27 05:47:18,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 05:47:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84162 states. [2020-10-27 05:47:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84162 to 13134. [2020-10-27 05:47:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13134 states. [2020-10-27 05:47:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 20087 transitions. [2020-10-27 05:47:20,925 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 20087 transitions. Word has length 88 [2020-10-27 05:47:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:20,926 INFO L481 AbstractCegarLoop]: Abstraction has 13134 states and 20087 transitions. [2020-10-27 05:47:20,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:47:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 20087 transitions. [2020-10-27 05:47:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:47:20,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:20,932 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 05:47:20,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:47:20,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash 251274104, now seen corresponding path program 1 times [2020-10-27 05:47:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:20,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348915471] [2020-10-27 05:47:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:23,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:47:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:47:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2665 [2020-10-27 05:47:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:47:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:47:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:24,108 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:47:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:47:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:24,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:47:24,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:47:24,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:47:24,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:47:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:47:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:47:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:24,195 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 05:47:24,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348915471] [2020-10-27 05:47:24,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:47:24,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:47:24,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841194922] [2020-10-27 05:47:24,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:47:24,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:47:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:47:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:47:24,198 INFO L87 Difference]: Start difference. First operand 13134 states and 20087 transitions. Second operand 11 states. [2020-10-27 05:47:24,556 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:47:26,402 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:47:26,836 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:47:31,142 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:47:36,036 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:47:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:38,670 INFO L93 Difference]: Finished difference Result 101462 states and 155255 transitions. [2020-10-27 05:47:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 05:47:38,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:47:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:38,853 INFO L225 Difference]: With dead ends: 101462 [2020-10-27 05:47:38,853 INFO L226 Difference]: Without dead ends: 95939 [2020-10-27 05:47:38,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=441, Invalid=1815, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 05:47:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95939 states. [2020-10-27 05:47:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95939 to 13410. [2020-10-27 05:47:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13410 states. [2020-10-27 05:47:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 20483 transitions. [2020-10-27 05:47:41,006 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 20483 transitions. Word has length 88 [2020-10-27 05:47:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:41,007 INFO L481 AbstractCegarLoop]: Abstraction has 13410 states and 20483 transitions. [2020-10-27 05:47:41,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:47:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 20483 transitions. [2020-10-27 05:47:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:47:41,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:41,013 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 05:47:41,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:47:41,013 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1033571560, now seen corresponding path program 1 times [2020-10-27 05:47:41,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:41,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148030066] [2020-10-27 05:47:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:47:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:47:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3276 [2020-10-27 05:47:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:47:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:47:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:44,772 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:47:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:47:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:44,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:44,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:47:44,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:47:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:44,850 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 05:47:44,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148030066] [2020-10-27 05:47:44,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:47:44,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:47:44,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487413490] [2020-10-27 05:47:44,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:47:44,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:47:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:47:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:47:44,853 INFO L87 Difference]: Start difference. First operand 13410 states and 20483 transitions. Second operand 11 states. [2020-10-27 05:47:45,251 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:47:47,546 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:47:47,882 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:47:52,468 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:47:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:56,152 INFO L93 Difference]: Finished difference Result 68795 states and 104908 transitions. [2020-10-27 05:47:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:47:56,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:47:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:56,250 INFO L225 Difference]: With dead ends: 68795 [2020-10-27 05:47:56,250 INFO L226 Difference]: Without dead ends: 67238 [2020-10-27 05:47:56,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 05:47:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67238 states. [2020-10-27 05:47:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67238 to 13410. [2020-10-27 05:47:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13410 states. [2020-10-27 05:47:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 20479 transitions. [2020-10-27 05:47:58,084 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 20479 transitions. Word has length 88 [2020-10-27 05:47:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:58,084 INFO L481 AbstractCegarLoop]: Abstraction has 13410 states and 20479 transitions. [2020-10-27 05:47:58,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:47:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 20479 transitions. [2020-10-27 05:47:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:47:58,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:58,090 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 05:47:58,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:47:58,090 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:58,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:58,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1334285272, now seen corresponding path program 1 times [2020-10-27 05:47:58,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:58,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487475450] [2020-10-27 05:47:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:48:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:48:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:48:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:01,343 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:48:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:01,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:48:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:48:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:48:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:01,439 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 05:48:01,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487475450] [2020-10-27 05:48:01,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:01,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:48:01,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308678016] [2020-10-27 05:48:01,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:48:01,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:01,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:48:01,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:48:01,441 INFO L87 Difference]: Start difference. First operand 13410 states and 20479 transitions. Second operand 11 states. [2020-10-27 05:48:01,873 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:48:04,659 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:48:05,056 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:48:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:48:11,507 INFO L93 Difference]: Finished difference Result 53628 states and 81375 transitions. [2020-10-27 05:48:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:48:11,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:48:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:48:11,560 INFO L225 Difference]: With dead ends: 53628 [2020-10-27 05:48:11,560 INFO L226 Difference]: Without dead ends: 46785 [2020-10-27 05:48:11,584 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 05:48:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46785 states. [2020-10-27 05:48:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46785 to 13734. [2020-10-27 05:48:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13734 states. [2020-10-27 05:48:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13734 states to 13734 states and 20909 transitions. [2020-10-27 05:48:13,520 INFO L78 Accepts]: Start accepts. Automaton has 13734 states and 20909 transitions. Word has length 88 [2020-10-27 05:48:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:48:13,521 INFO L481 AbstractCegarLoop]: Abstraction has 13734 states and 20909 transitions. [2020-10-27 05:48:13,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:48:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13734 states and 20909 transitions. [2020-10-27 05:48:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 05:48:13,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:48:13,527 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 05:48:13,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:48:13,527 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:48:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:48:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1128971208, now seen corresponding path program 1 times [2020-10-27 05:48:13,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:48:13,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026015992] [2020-10-27 05:48:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:48:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2772 [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:48:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:48:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:48:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:16,799 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:48:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:48:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:16,875 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 05:48:16,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026015992] [2020-10-27 05:48:16,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:16,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:48:16,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480539047] [2020-10-27 05:48:16,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:48:16,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:16,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:48:16,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:48:16,877 INFO L87 Difference]: Start difference. First operand 13734 states and 20909 transitions. Second operand 11 states. [2020-10-27 05:48:17,415 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:48:20,389 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:48:20,768 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 05:48:21,214 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:48:33,631 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:48:34,569 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-10-27 05:48:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:48:45,369 INFO L93 Difference]: Finished difference Result 159154 states and 244613 transitions. [2020-10-27 05:48:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 05:48:45,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-27 05:48:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:48:45,717 INFO L225 Difference]: With dead ends: 159154 [2020-10-27 05:48:45,718 INFO L226 Difference]: Without dead ends: 148599 [2020-10-27 05:48:45,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=487, Invalid=2063, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 05:48:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148599 states. [2020-10-27 05:48:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148599 to 14205. [2020-10-27 05:48:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14205 states. [2020-10-27 05:48:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14205 states to 14205 states and 21504 transitions. [2020-10-27 05:48:48,654 INFO L78 Accepts]: Start accepts. Automaton has 14205 states and 21504 transitions. Word has length 88 [2020-10-27 05:48:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:48:48,655 INFO L481 AbstractCegarLoop]: Abstraction has 14205 states and 21504 transitions. [2020-10-27 05:48:48,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:48:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14205 states and 21504 transitions. [2020-10-27 05:48:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 05:48:48,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:48:48,659 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 05:48:48,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:48:48,660 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:48:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:48:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash -152674309, now seen corresponding path program 1 times [2020-10-27 05:48:48,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:48:48,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659504859] [2020-10-27 05:48:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:48:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 05:48:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:48:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-27 05:48:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:48:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 05:48:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:48:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:49,431 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:48:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:48:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:49,472 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 05:48:49,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659504859] [2020-10-27 05:48:49,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:49,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:48:49,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234070290] [2020-10-27 05:48:49,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:48:49,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:48:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:48:49,475 INFO L87 Difference]: Start difference. First operand 14205 states and 21504 transitions. Second operand 8 states. [2020-10-27 05:48:49,872 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:48:51,730 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:48:52,098 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:48:52,436 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:48:52,811 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:49:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:01,328 INFO L93 Difference]: Finished difference Result 66626 states and 101862 transitions. [2020-10-27 05:49:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:49:01,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-27 05:49:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:01,392 INFO L225 Difference]: With dead ends: 66626 [2020-10-27 05:49:01,393 INFO L226 Difference]: Without dead ends: 54191 [2020-10-27 05:49:01,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:49:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54191 states. [2020-10-27 05:49:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54191 to 27216. [2020-10-27 05:49:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27216 states. [2020-10-27 05:49:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27216 states to 27216 states and 41101 transitions. [2020-10-27 05:49:06,166 INFO L78 Accepts]: Start accepts. Automaton has 27216 states and 41101 transitions. Word has length 89 [2020-10-27 05:49:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:06,166 INFO L481 AbstractCegarLoop]: Abstraction has 27216 states and 41101 transitions. [2020-10-27 05:49:06,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:49:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27216 states and 41101 transitions. [2020-10-27 05:49:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 05:49:06,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:06,176 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 05:49:06,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:49:06,177 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:06,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:06,177 INFO L82 PathProgramCache]: Analyzing trace with hash -439179220, now seen corresponding path program 1 times [2020-10-27 05:49:06,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:06,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811721285] [2020-10-27 05:49:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:06,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 05:49:06,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 05:49:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:49:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 05:49:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:49:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:06,896 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:06,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:06,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:06,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:49:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:49:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:49:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:06,934 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 05:49:06,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811721285] [2020-10-27 05:49:06,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:06,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:06,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428548221] [2020-10-27 05:49:06,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:49:06,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:06,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:49:06,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:49:06,936 INFO L87 Difference]: Start difference. First operand 27216 states and 41101 transitions. Second operand 5 states. [2020-10-27 05:49:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:17,079 INFO L93 Difference]: Finished difference Result 52723 states and 79663 transitions. [2020-10-27 05:49:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:49:17,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 05:49:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:17,134 INFO L225 Difference]: With dead ends: 52723 [2020-10-27 05:49:17,135 INFO L226 Difference]: Without dead ends: 52720 [2020-10-27 05:49:17,144 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 05:49:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52720 states. [2020-10-27 05:49:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52720 to 27856. [2020-10-27 05:49:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27856 states. [2020-10-27 05:49:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 41741 transitions. [2020-10-27 05:49:22,167 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 41741 transitions. Word has length 90 [2020-10-27 05:49:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:22,167 INFO L481 AbstractCegarLoop]: Abstraction has 27856 states and 41741 transitions. [2020-10-27 05:49:22,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:49:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 41741 transitions. [2020-10-27 05:49:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 05:49:22,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:22,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:49:22,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:49:22,175 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:22,175 INFO L82 PathProgramCache]: Analyzing trace with hash -747128268, now seen corresponding path program 1 times [2020-10-27 05:49:22,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:22,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549439610] [2020-10-27 05:49:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:22,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 05:49:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 05:49:22,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:49:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:49:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:49:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:22,713 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:22,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:49:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:22,758 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 05:49:22,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549439610] [2020-10-27 05:49:22,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:22,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:22,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416443172] [2020-10-27 05:49:22,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:49:22,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:49:22,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:49:22,760 INFO L87 Difference]: Start difference. First operand 27856 states and 41741 transitions. Second operand 5 states. [2020-10-27 05:49:23,112 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:49:24,817 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:49:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:34,105 INFO L93 Difference]: Finished difference Result 75638 states and 113537 transitions. [2020-10-27 05:49:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:49:34,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-27 05:49:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:34,180 INFO L225 Difference]: With dead ends: 75638 [2020-10-27 05:49:34,180 INFO L226 Difference]: Without dead ends: 50131 [2020-10-27 05:49:34,206 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 05:49:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50131 states. [2020-10-27 05:49:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50131 to 50128. [2020-10-27 05:49:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50128 states. [2020-10-27 05:49:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50128 states to 50128 states and 74669 transitions. [2020-10-27 05:49:43,296 INFO L78 Accepts]: Start accepts. Automaton has 50128 states and 74669 transitions. Word has length 91 [2020-10-27 05:49:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:43,296 INFO L481 AbstractCegarLoop]: Abstraction has 50128 states and 74669 transitions. [2020-10-27 05:49:43,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:49:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 50128 states and 74669 transitions. [2020-10-27 05:49:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 05:49:43,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:43,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:49:43,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:49:43,304 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1100179248, now seen corresponding path program 1 times [2020-10-27 05:49:43,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:43,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457699208] [2020-10-27 05:49:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:45,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 05:49:45,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:49:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-27 05:49:45,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:49:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:49:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:49:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:45,762 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:49:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:49:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:49:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:45,825 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 05:49:45,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457699208] [2020-10-27 05:49:45,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:45,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:49:45,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56502230] [2020-10-27 05:49:45,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:49:45,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:45,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:49:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:49:45,827 INFO L87 Difference]: Start difference. First operand 50128 states and 74669 transitions. Second operand 10 states. [2020-10-27 05:49:46,225 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:49:50,515 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:49:51,363 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196