/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.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:27:36,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:27:36,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:27:36,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:27:36,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:27:36,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:27:36,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:27:36,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:27:36,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:27:36,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:27:36,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:27:36,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:27:36,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:27:36,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:27:36,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:27:36,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:27:36,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:27:36,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:27:36,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:27:36,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:27:36,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:27:36,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:27:36,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:27:36,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:27:36,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:27:36,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:27:36,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:27:36,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:27:36,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:27:36,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:27:36,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:27:36,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:27:36,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:27:36,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:27:36,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:27:36,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:27:36,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:27:36,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:27:36,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:27:36,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:27:36,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:27:36,745 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 05:27:36,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:27:36,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:27:36,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:27:36,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:27:36,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:27:36,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:27:36,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:27:36,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:27:36,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:27:36,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:27:36,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:27:36,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:27:36,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:27:36,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:27:36,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:27:36,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:27:36,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:27:36,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:27:36,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:27:36,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:27:36,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:27:36,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:27:36,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:27:36,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:27:36,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:27:36,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:27:36,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:27:36,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:27:36,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:27:36,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:27:37,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:27:37,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:27:37,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:27:37,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:27:37,229 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:27:37,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-27 05:27:37,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622a9ed32/b599798c6cdc4f2f911f5d69856c3b66/FLAG6c895d362 [2020-10-27 05:27:37,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:27:37,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-27 05:27:37,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622a9ed32/b599798c6cdc4f2f911f5d69856c3b66/FLAG6c895d362 [2020-10-27 05:27:38,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622a9ed32/b599798c6cdc4f2f911f5d69856c3b66 [2020-10-27 05:27:38,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:27:38,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:27:38,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:27:38,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:27:38,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:27:38,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378a66f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38, skipping insertion in model container [2020-10-27 05:27:38,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:27:38,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:27:38,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:27:38,719 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:27:38,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:27:38,848 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:27:38,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38 WrapperNode [2020-10-27 05:27:38,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:27:38,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:27:38,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:27:38,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:27:38,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (1/1) ... [2020-10-27 05:27:38,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:27:38,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:27:38,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:27:38,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:27:38,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (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 05:27:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:27:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:27:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:27:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:27:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:27:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:27:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:27:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:27:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:27:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:27:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:27:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:27:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:27:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:27:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:27:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:27:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:27:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:27:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:27:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:27:40,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:27:40,209 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:27:40,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:27:40 BoogieIcfgContainer [2020-10-27 05:27:40,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:27:40,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:27:40,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:27:40,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:27:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:27:38" (1/3) ... [2020-10-27 05:27:40,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ccbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:27:40, skipping insertion in model container [2020-10-27 05:27:40,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:38" (2/3) ... [2020-10-27 05:27:40,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ccbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:27:40, skipping insertion in model container [2020-10-27 05:27:40,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:27:40" (3/3) ... [2020-10-27 05:27:40,220 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-27 05:27:40,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:27:40,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:27:40,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:27:40,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:27:40,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:27:40,280 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:27:40,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:27:40,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:27:40,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:27:40,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:27:40,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:27:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-10-27 05:27:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 05:27:40,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:40,314 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 05:27:40,314 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash 247434898, now seen corresponding path program 1 times [2020-10-27 05:27:40,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:40,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913451018] [2020-10-27 05:27:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 05:27:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:27:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:27:45,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:27:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:27:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:27:46,634 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:27:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:27:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:46,712 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 05:27:46,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913451018] [2020-10-27 05:27:46,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:46,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:27:46,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720315971] [2020-10-27 05:27:46,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:27:46,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:46,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:27:46,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:27:46,739 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 4 states. [2020-10-27 05:27:47,477 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:27:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:48,604 INFO L93 Difference]: Finished difference Result 307 states and 499 transitions. [2020-10-27 05:27:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:27:48,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-27 05:27:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:48,621 INFO L225 Difference]: With dead ends: 307 [2020-10-27 05:27:48,621 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 05:27:48,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:27:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 05:27:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2020-10-27 05:27:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-27 05:27:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 297 transitions. [2020-10-27 05:27:48,690 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 297 transitions. Word has length 91 [2020-10-27 05:27:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:48,691 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 297 transitions. [2020-10-27 05:27:48,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:27:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 297 transitions. [2020-10-27 05:27:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:27:48,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:48,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:48,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:27:48,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2092104989, now seen corresponding path program 1 times [2020-10-27 05:27:48,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:48,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184794497] [2020-10-27 05:27:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:49,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:27:53,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:27:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:54,241 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:27:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:54,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:54,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:54,322 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 05:27:54,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184794497] [2020-10-27 05:27:54,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:54,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:27:54,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027354124] [2020-10-27 05:27:54,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:27:54,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:27:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:27:54,328 INFO L87 Difference]: Start difference. First operand 208 states and 297 transitions. Second operand 10 states. [2020-10-27 05:27:54,827 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:27:56,194 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:27:56,610 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:27:57,013 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:27:57,424 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:27:57,816 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:27:58,216 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:27:58,698 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:27:59,099 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:27:59,552 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:27:59,987 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:28:00,401 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:28:01,007 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:28:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:01,032 INFO L93 Difference]: Finished difference Result 2322 states and 3657 transitions. [2020-10-27 05:28:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:28:01,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-27 05:28:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:01,046 INFO L225 Difference]: With dead ends: 2322 [2020-10-27 05:28:01,046 INFO L226 Difference]: Without dead ends: 2171 [2020-10-27 05:28:01,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:28:01,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-10-27 05:28:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 356. [2020-10-27 05:28:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-27 05:28:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 531 transitions. [2020-10-27 05:28:01,124 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 531 transitions. Word has length 92 [2020-10-27 05:28:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:01,124 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 531 transitions. [2020-10-27 05:28:01,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:28:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 531 transitions. [2020-10-27 05:28:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:01,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:01,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:01,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:28:01,128 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1026820240, now seen corresponding path program 1 times [2020-10-27 05:28:01,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:01,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45727156] [2020-10-27 05:28:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:01,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:06,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:06,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:28:06,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:06,569 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:06,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:06,656 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 05:28:06,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45727156] [2020-10-27 05:28:06,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:06,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:06,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239465126] [2020-10-27 05:28:06,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:06,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:06,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:06,659 INFO L87 Difference]: Start difference. First operand 356 states and 531 transitions. Second operand 7 states. [2020-10-27 05:28:07,019 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:28:07,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:07,929 INFO L93 Difference]: Finished difference Result 1139 states and 1769 transitions. [2020-10-27 05:28:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:07,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:28:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:07,940 INFO L225 Difference]: With dead ends: 1139 [2020-10-27 05:28:07,940 INFO L226 Difference]: Without dead ends: 840 [2020-10-27 05:28:07,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:28:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-27 05:28:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 367. [2020-10-27 05:28:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-27 05:28:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 546 transitions. [2020-10-27 05:28:07,994 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 546 transitions. Word has length 94 [2020-10-27 05:28:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:07,994 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 546 transitions. [2020-10-27 05:28:07,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 546 transitions. [2020-10-27 05:28:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:07,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:07,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:28:07,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1517528214, now seen corresponding path program 1 times [2020-10-27 05:28:07,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:07,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076179172] [2020-10-27 05:28:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:28:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:13,617 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:13,702 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 05:28:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076179172] [2020-10-27 05:28:13,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:13,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:13,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265355420] [2020-10-27 05:28:13,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:13,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:13,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:13,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:13,704 INFO L87 Difference]: Start difference. First operand 367 states and 546 transitions. Second operand 7 states. [2020-10-27 05:28:14,093 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:28:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:15,148 INFO L93 Difference]: Finished difference Result 1107 states and 1715 transitions. [2020-10-27 05:28:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:15,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:28:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:15,155 INFO L225 Difference]: With dead ends: 1107 [2020-10-27 05:28:15,156 INFO L226 Difference]: Without dead ends: 808 [2020-10-27 05:28:15,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-27 05:28:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 375. [2020-10-27 05:28:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-27 05:28:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 557 transitions. [2020-10-27 05:28:15,215 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 557 transitions. Word has length 94 [2020-10-27 05:28:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:15,216 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 557 transitions. [2020-10-27 05:28:15,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 557 transitions. [2020-10-27 05:28:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:15,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:15,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:15,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:28:15,222 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:15,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1393752664, now seen corresponding path program 1 times [2020-10-27 05:28:15,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:15,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701080211] [2020-10-27 05:28:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:20,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:20,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:28:20,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:28:20,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:28:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:20,876 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:20,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:20,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:28:20,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:28:21,014 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 05:28:21,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701080211] [2020-10-27 05:28:21,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:21,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:21,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398562307] [2020-10-27 05:28:21,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:21,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:21,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:21,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:21,024 INFO L87 Difference]: Start difference. First operand 375 states and 557 transitions. Second operand 7 states. [2020-10-27 05:28:21,414 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:28:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:22,417 INFO L93 Difference]: Finished difference Result 1033 states and 1594 transitions. [2020-10-27 05:28:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:22,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:28:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:22,423 INFO L225 Difference]: With dead ends: 1033 [2020-10-27 05:28:22,423 INFO L226 Difference]: Without dead ends: 734 [2020-10-27 05:28:22,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-27 05:28:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 417. [2020-10-27 05:28:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 05:28:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 621 transitions. [2020-10-27 05:28:22,481 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 621 transitions. Word has length 94 [2020-10-27 05:28:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:22,481 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 621 transitions. [2020-10-27 05:28:22,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 621 transitions. [2020-10-27 05:28:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:22,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:22,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:22,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:28:22,483 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:22,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2129854546, now seen corresponding path program 1 times [2020-10-27 05:28:22,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:22,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246375737] [2020-10-27 05:28:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:28:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:27,988 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:28,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:28,067 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 05:28:28,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246375737] [2020-10-27 05:28:28,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:28,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:28,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769652114] [2020-10-27 05:28:28,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:28,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:28,069 INFO L87 Difference]: Start difference. First operand 417 states and 621 transitions. Second operand 7 states. [2020-10-27 05:28:28,487 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:28:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:29,555 INFO L93 Difference]: Finished difference Result 1009 states and 1552 transitions. [2020-10-27 05:28:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:29,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:28:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:29,561 INFO L225 Difference]: With dead ends: 1009 [2020-10-27 05:28:29,562 INFO L226 Difference]: Without dead ends: 710 [2020-10-27 05:28:29,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-27 05:28:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 433. [2020-10-27 05:28:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-27 05:28:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 643 transitions. [2020-10-27 05:28:29,638 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 643 transitions. Word has length 94 [2020-10-27 05:28:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:29,639 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 643 transitions. [2020-10-27 05:28:29,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 643 transitions. [2020-10-27 05:28:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:29,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:29,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:29,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:28:29,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:29,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:29,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1899941928, now seen corresponding path program 1 times [2020-10-27 05:28:29,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:29,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356933257] [2020-10-27 05:28:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:28:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:28:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:35,043 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:35,086 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 05:28:35,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356933257] [2020-10-27 05:28:35,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:35,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:28:35,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633048413] [2020-10-27 05:28:35,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:28:35,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:28:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:28:35,088 INFO L87 Difference]: Start difference. First operand 433 states and 643 transitions. Second operand 4 states. [2020-10-27 05:28:35,470 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:28:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:36,092 INFO L93 Difference]: Finished difference Result 880 states and 1350 transitions. [2020-10-27 05:28:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:28:36,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-27 05:28:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:36,096 INFO L225 Difference]: With dead ends: 880 [2020-10-27 05:28:36,096 INFO L226 Difference]: Without dead ends: 581 [2020-10-27 05:28:36,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:28:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-27 05:28:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 578. [2020-10-27 05:28:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-27 05:28:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 871 transitions. [2020-10-27 05:28:36,164 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 871 transitions. Word has length 94 [2020-10-27 05:28:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:36,165 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 871 transitions. [2020-10-27 05:28:36,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:28:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 871 transitions. [2020-10-27 05:28:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:36,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:36,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:36,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:28:36,166 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:36,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1773495735, now seen corresponding path program 1 times [2020-10-27 05:28:36,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:36,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729662870] [2020-10-27 05:28:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:28:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:28:41,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:28:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:28:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:28:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:41,762 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:41,829 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 05:28:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729662870] [2020-10-27 05:28:41,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:41,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:28:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89022702] [2020-10-27 05:28:41,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:28:41,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:41,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:28:41,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:28:41,837 INFO L87 Difference]: Start difference. First operand 578 states and 871 transitions. Second operand 10 states. [2020-10-27 05:28:42,402 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:28:43,646 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:28:44,046 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:28:44,551 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:28:44,991 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:28:45,905 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:28:46,318 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:28:46,780 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:28:47,268 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:28:47,712 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:28:48,103 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:28:48,520 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:28:49,001 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:28:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:49,268 INFO L93 Difference]: Finished difference Result 3574 states and 5587 transitions. [2020-10-27 05:28:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:28:49,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-27 05:28:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:49,285 INFO L225 Difference]: With dead ends: 3574 [2020-10-27 05:28:49,285 INFO L226 Difference]: Without dead ends: 3130 [2020-10-27 05:28:49,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:28:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2020-10-27 05:28:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 578. [2020-10-27 05:28:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-27 05:28:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 868 transitions. [2020-10-27 05:28:49,407 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 868 transitions. Word has length 94 [2020-10-27 05:28:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:49,408 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 868 transitions. [2020-10-27 05:28:49,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:28:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 868 transitions. [2020-10-27 05:28:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:49,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:49,409 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:49,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:28:49,410 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1564615458, now seen corresponding path program 1 times [2020-10-27 05:28:49,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:49,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283777805] [2020-10-27 05:28:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:50,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:28:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:54,918 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:28:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:54,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:55,003 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 05:28:55,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283777805] [2020-10-27 05:28:55,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:55,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:55,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589962083] [2020-10-27 05:28:55,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:55,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:55,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:55,005 INFO L87 Difference]: Start difference. First operand 578 states and 868 transitions. Second operand 7 states. [2020-10-27 05:28:55,416 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:28:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:56,548 INFO L93 Difference]: Finished difference Result 1566 states and 2411 transitions. [2020-10-27 05:28:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:56,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:28:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:56,556 INFO L225 Difference]: With dead ends: 1566 [2020-10-27 05:28:56,557 INFO L226 Difference]: Without dead ends: 1094 [2020-10-27 05:28:56,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-10-27 05:28:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 574. [2020-10-27 05:28:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-10-27 05:28:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 858 transitions. [2020-10-27 05:28:56,666 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 858 transitions. Word has length 94 [2020-10-27 05:28:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:56,666 INFO L481 AbstractCegarLoop]: Abstraction has 574 states and 858 transitions. [2020-10-27 05:28:56,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 858 transitions. [2020-10-27 05:28:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:28:56,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:56,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:56,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:28:56,668 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash -718166044, now seen corresponding path program 1 times [2020-10-27 05:28:56,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:56,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123162372] [2020-10-27 05:28:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:01,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:01,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:29:01,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:29:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:02,122 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:02,190 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 05:29:02,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123162372] [2020-10-27 05:29:02,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:02,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:29:02,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391021036] [2020-10-27 05:29:02,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:29:02,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:02,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:29:02,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:29:02,193 INFO L87 Difference]: Start difference. First operand 574 states and 858 transitions. Second operand 7 states. [2020-10-27 05:29:02,594 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:03,654 INFO L93 Difference]: Finished difference Result 1493 states and 2304 transitions. [2020-10-27 05:29:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:29:03,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:29:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:03,660 INFO L225 Difference]: With dead ends: 1493 [2020-10-27 05:29:03,660 INFO L226 Difference]: Without dead ends: 1029 [2020-10-27 05:29:03,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:29:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-27 05:29:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 554. [2020-10-27 05:29:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-27 05:29:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 830 transitions. [2020-10-27 05:29:03,767 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 830 transitions. Word has length 94 [2020-10-27 05:29:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:03,767 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 830 transitions. [2020-10-27 05:29:03,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:29:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 830 transitions. [2020-10-27 05:29:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 05:29:03,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:03,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:03,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:29:03,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash 796776932, now seen corresponding path program 1 times [2020-10-27 05:29:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:03,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49196701] [2020-10-27 05:29:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 05:29:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:29:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4217 [2020-10-27 05:29:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 05:29:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:29:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:08,373 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:08,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:08,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:29:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:29:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:08,415 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 05:29:08,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49196701] [2020-10-27 05:29:08,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:08,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:29:08,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459932722] [2020-10-27 05:29:08,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:29:08,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:08,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:29:08,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:29:08,418 INFO L87 Difference]: Start difference. First operand 554 states and 830 transitions. Second operand 4 states. [2020-10-27 05:29:08,795 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:29:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:09,752 INFO L93 Difference]: Finished difference Result 1431 states and 2202 transitions. [2020-10-27 05:29:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:29:09,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-27 05:29:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:09,757 INFO L225 Difference]: With dead ends: 1431 [2020-10-27 05:29:09,758 INFO L226 Difference]: Without dead ends: 946 [2020-10-27 05:29:09,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:29:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-27 05:29:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 943. [2020-10-27 05:29:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-27 05:29:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1437 transitions. [2020-10-27 05:29:09,928 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1437 transitions. Word has length 95 [2020-10-27 05:29:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:09,928 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1437 transitions. [2020-10-27 05:29:09,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:29:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1437 transitions. [2020-10-27 05:29:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 05:29:09,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:09,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:09,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:29:09,929 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2095383981, now seen corresponding path program 1 times [2020-10-27 05:29:09,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:09,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312719837] [2020-10-27 05:29:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:09,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 05:29:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:29:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:29:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:29:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:15,333 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:15,381 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 05:29:15,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312719837] [2020-10-27 05:29:15,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:15,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567227614] [2020-10-27 05:29:15,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:15,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:15,383 INFO L87 Difference]: Start difference. First operand 943 states and 1437 transitions. Second operand 6 states. [2020-10-27 05:29:15,796 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:16,522 INFO L93 Difference]: Finished difference Result 1819 states and 2803 transitions. [2020-10-27 05:29:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:29:16,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-27 05:29:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:16,528 INFO L225 Difference]: With dead ends: 1819 [2020-10-27 05:29:16,528 INFO L226 Difference]: Without dead ends: 943 [2020-10-27 05:29:16,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-10-27 05:29:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2020-10-27 05:29:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-27 05:29:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1430 transitions. [2020-10-27 05:29:16,713 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1430 transitions. Word has length 96 [2020-10-27 05:29:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:16,714 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1430 transitions. [2020-10-27 05:29:16,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1430 transitions. [2020-10-27 05:29:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 05:29:16,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:16,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:16,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:29:16,716 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 626890130, now seen corresponding path program 1 times [2020-10-27 05:29:16,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:16,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151994697] [2020-10-27 05:29:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:29:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:19,415 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:29:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:19,447 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 05:29:19,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151994697] [2020-10-27 05:29:19,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:19,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:29:19,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928473138] [2020-10-27 05:29:19,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:29:19,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:19,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:29:19,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:29:19,449 INFO L87 Difference]: Start difference. First operand 943 states and 1430 transitions. Second operand 4 states. [2020-10-27 05:29:19,849 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:29:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:20,823 INFO L93 Difference]: Finished difference Result 2550 states and 3927 transitions. [2020-10-27 05:29:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:29:20,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-27 05:29:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:20,833 INFO L225 Difference]: With dead ends: 2550 [2020-10-27 05:29:20,833 INFO L226 Difference]: Without dead ends: 1682 [2020-10-27 05:29:20,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:29:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2020-10-27 05:29:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1679. [2020-10-27 05:29:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2020-10-27 05:29:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2563 transitions. [2020-10-27 05:29:21,191 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2563 transitions. Word has length 96 [2020-10-27 05:29:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:21,191 INFO L481 AbstractCegarLoop]: Abstraction has 1679 states and 2563 transitions. [2020-10-27 05:29:21,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:29:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2563 transitions. [2020-10-27 05:29:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 05:29:21,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:21,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:21,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:29:21,193 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1084877528, now seen corresponding path program 1 times [2020-10-27 05:29:21,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:21,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523945262] [2020-10-27 05:29:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4149 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:29:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:25,756 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:25,825 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 05:29:25,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523945262] [2020-10-27 05:29:25,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:25,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:25,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108529580] [2020-10-27 05:29:25,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:25,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:25,826 INFO L87 Difference]: Start difference. First operand 1679 states and 2563 transitions. Second operand 6 states. [2020-10-27 05:29:26,232 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:29:27,468 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:29:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:27,870 INFO L93 Difference]: Finished difference Result 4848 states and 7466 transitions. [2020-10-27 05:29:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:27,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-27 05:29:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:27,887 INFO L225 Difference]: With dead ends: 4848 [2020-10-27 05:29:27,888 INFO L226 Difference]: Without dead ends: 3242 [2020-10-27 05:29:27,892 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 05:29:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-10-27 05:29:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3239. [2020-10-27 05:29:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3239 states. [2020-10-27 05:29:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4966 transitions. [2020-10-27 05:29:28,468 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4966 transitions. Word has length 97 [2020-10-27 05:29:28,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:28,468 INFO L481 AbstractCegarLoop]: Abstraction has 3239 states and 4966 transitions. [2020-10-27 05:29:28,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4966 transitions. [2020-10-27 05:29:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 05:29:28,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:28,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:28,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:29:28,470 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 242507661, now seen corresponding path program 1 times [2020-10-27 05:29:28,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396406912] [2020-10-27 05:29:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:29:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:30,061 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:30,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:30,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:29:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:30,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:29:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:30,104 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 05:29:30,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396406912] [2020-10-27 05:29:30,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:30,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:29:30,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900837680] [2020-10-27 05:29:30,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:29:30,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:30,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:29:30,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:29:30,107 INFO L87 Difference]: Start difference. First operand 3239 states and 4966 transitions. Second operand 4 states. [2020-10-27 05:29:30,506 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:29:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:32,022 INFO L93 Difference]: Finished difference Result 9144 states and 14060 transitions. [2020-10-27 05:29:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:29:32,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-27 05:29:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:32,047 INFO L225 Difference]: With dead ends: 9144 [2020-10-27 05:29:32,047 INFO L226 Difference]: Without dead ends: 5986 [2020-10-27 05:29:32,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:29:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2020-10-27 05:29:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 5983. [2020-10-27 05:29:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5983 states. [2020-10-27 05:29:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 9131 transitions. [2020-10-27 05:29:32,984 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 9131 transitions. Word has length 97 [2020-10-27 05:29:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:32,985 INFO L481 AbstractCegarLoop]: Abstraction has 5983 states and 9131 transitions. [2020-10-27 05:29:32,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:29:32,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 9131 transitions. [2020-10-27 05:29:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:29:32,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:32,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:32,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:29:32,986 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:32,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1641716734, now seen corresponding path program 1 times [2020-10-27 05:29:32,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:32,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540263889] [2020-10-27 05:29:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:35,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2417 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:29:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:35,818 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:35,876 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 05:29:35,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540263889] [2020-10-27 05:29:35,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:35,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:35,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567387575] [2020-10-27 05:29:35,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:35,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:35,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:35,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:35,878 INFO L87 Difference]: Start difference. First operand 5983 states and 9131 transitions. Second operand 6 states. [2020-10-27 05:29:36,332 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:29:37,856 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:29:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:39,077 INFO L93 Difference]: Finished difference Result 17722 states and 27099 transitions. [2020-10-27 05:29:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:39,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-27 05:29:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:39,109 INFO L225 Difference]: With dead ends: 17722 [2020-10-27 05:29:39,110 INFO L226 Difference]: Without dead ends: 11818 [2020-10-27 05:29:39,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11818 states. [2020-10-27 05:29:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11818 to 11815. [2020-10-27 05:29:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11815 states. [2020-10-27 05:29:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11815 states to 11815 states and 18002 transitions. [2020-10-27 05:29:40,957 INFO L78 Accepts]: Start accepts. Automaton has 11815 states and 18002 transitions. Word has length 98 [2020-10-27 05:29:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:40,958 INFO L481 AbstractCegarLoop]: Abstraction has 11815 states and 18002 transitions. [2020-10-27 05:29:40,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11815 states and 18002 transitions. [2020-10-27 05:29:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:29:40,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:40,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:40,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:29:40,959 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:40,960 INFO L82 PathProgramCache]: Analyzing trace with hash 216705255, now seen corresponding path program 1 times [2020-10-27 05:29:40,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:40,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114728113] [2020-10-27 05:29:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 05:29:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:29:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:42,070 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:29:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:42,113 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 05:29:42,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114728113] [2020-10-27 05:29:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:42,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:29:42,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794639954] [2020-10-27 05:29:42,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:29:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:42,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:29:42,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:29:42,115 INFO L87 Difference]: Start difference. First operand 11815 states and 18002 transitions. Second operand 4 states. [2020-10-27 05:29:42,515 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:29:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:46,394 INFO L93 Difference]: Finished difference Result 33720 states and 51301 transitions. [2020-10-27 05:29:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:29:46,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 05:29:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:46,443 INFO L225 Difference]: With dead ends: 33720 [2020-10-27 05:29:46,443 INFO L226 Difference]: Without dead ends: 21992 [2020-10-27 05:29:46,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:29:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21992 states. [2020-10-27 05:29:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21992 to 21989. [2020-10-27 05:29:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21989 states. [2020-10-27 05:29:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21989 states to 21989 states and 33199 transitions. [2020-10-27 05:29:50,237 INFO L78 Accepts]: Start accepts. Automaton has 21989 states and 33199 transitions. Word has length 98 [2020-10-27 05:29:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:50,237 INFO L481 AbstractCegarLoop]: Abstraction has 21989 states and 33199 transitions. [2020-10-27 05:29:50,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:29:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 21989 states and 33199 transitions. [2020-10-27 05:29:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 05:29:50,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:50,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:29:50,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:29:50,238 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:50,239 INFO L82 PathProgramCache]: Analyzing trace with hash 644755305, now seen corresponding path program 1 times [2020-10-27 05:29:50,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:50,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882437962] [2020-10-27 05:29:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:51,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:51,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 05:29:51,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:29:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-27 05:29:51,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 05:29:51,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:52,237 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:29:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:52,292 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 05:29:52,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882437962] [2020-10-27 05:29:52,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:52,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:52,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751191893] [2020-10-27 05:29:52,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:52,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:52,294 INFO L87 Difference]: Start difference. First operand 21989 states and 33199 transitions. Second operand 6 states. [2020-10-27 05:29:52,699 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:29:54,736 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:00,464 INFO L93 Difference]: Finished difference Result 65592 states and 99012 transitions. [2020-10-27 05:30:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:30:00,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-27 05:30:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:00,536 INFO L225 Difference]: With dead ends: 65592 [2020-10-27 05:30:00,536 INFO L226 Difference]: Without dead ends: 43688 [2020-10-27 05:30:00,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:30:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43688 states. [2020-10-27 05:30:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43688 to 43685. [2020-10-27 05:30:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43685 states. [2020-10-27 05:30:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43685 states to 43685 states and 65710 transitions. [2020-10-27 05:30:07,580 INFO L78 Accepts]: Start accepts. Automaton has 43685 states and 65710 transitions. Word has length 99 [2020-10-27 05:30:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:07,580 INFO L481 AbstractCegarLoop]: Abstraction has 43685 states and 65710 transitions. [2020-10-27 05:30:07,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:30:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 43685 states and 65710 transitions. [2020-10-27 05:30:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 05:30:07,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:07,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:07,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 05:30:07,581 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:07,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1618718414, now seen corresponding path program 1 times [2020-10-27 05:30:07,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:07,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921325538] [2020-10-27 05:30:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 05:30:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:08,366 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:30:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:08,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:08,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:30:08,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:30:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:30:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:08,401 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 05:30:08,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921325538] [2020-10-27 05:30:08,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:08,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:30:08,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881751717] [2020-10-27 05:30:08,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:30:08,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:30:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:30:08,403 INFO L87 Difference]: Start difference. First operand 43685 states and 65710 transitions. Second operand 4 states. [2020-10-27 05:30:08,800 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:30:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:21,858 INFO L93 Difference]: Finished difference Result 124718 states and 186934 transitions. [2020-10-27 05:30:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:30:21,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 05:30:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:21,979 INFO L225 Difference]: With dead ends: 124718 [2020-10-27 05:30:21,980 INFO L226 Difference]: Without dead ends: 81126 [2020-10-27 05:30:22,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:30:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81126 states. [2020-10-27 05:30:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81126 to 81123. [2020-10-27 05:30:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81123 states. [2020-10-27 05:30:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81123 states to 81123 states and 120555 transitions. [2020-10-27 05:30:35,724 INFO L78 Accepts]: Start accepts. Automaton has 81123 states and 120555 transitions. Word has length 99 [2020-10-27 05:30:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:35,724 INFO L481 AbstractCegarLoop]: Abstraction has 81123 states and 120555 transitions. [2020-10-27 05:30:35,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:30:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 81123 states and 120555 transitions. [2020-10-27 05:30:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 05:30:35,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:35,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:35,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 05:30:35,725 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1995282988, now seen corresponding path program 1 times [2020-10-27 05:30:35,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:35,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482815129] [2020-10-27 05:30:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:35,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:30:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:36,335 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:30:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:36,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:36,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:30:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:36,369 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 05:30:36,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482815129] [2020-10-27 05:30:36,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:36,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:30:36,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758812931] [2020-10-27 05:30:36,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:30:36,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:36,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:30:36,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:30:36,371 INFO L87 Difference]: Start difference. First operand 81123 states and 120555 transitions. Second operand 4 states. [2020-10-27 05:30:36,750 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:31:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:00,741 INFO L93 Difference]: Finished difference Result 230889 states and 341487 transitions. [2020-10-27 05:31:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:31:00,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-27 05:31:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:01,073 INFO L225 Difference]: With dead ends: 230889 [2020-10-27 05:31:01,073 INFO L226 Difference]: Without dead ends: 149861 [2020-10-27 05:31:01,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:31:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149861 states.