/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:33:35,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:33:35,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:33:35,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:33:35,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:33:35,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:33:35,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:33:35,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:33:35,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:33:35,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:33:35,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:33:35,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:33:35,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:33:35,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:33:35,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:33:35,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:33:35,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:33:35,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:33:35,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:33:35,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:33:35,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:33:35,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:33:35,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:33:35,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:33:35,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:33:35,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:33:35,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:33:35,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:33:35,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:33:35,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:33:35,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:33:35,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:33:35,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:33:35,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:33:35,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:33:35,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:33:35,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:33:35,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:33:35,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:33:35,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:33:35,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:33:35,866 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 23:33:35,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:33:35,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:33:35,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:33:35,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:33:35,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:33:35,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:33:35,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:33:35,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:33:35,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:33:35,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:33:35,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:33:35,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:33:35,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:33:35,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:33:35,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:33:35,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:33:35,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:33:35,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:33:35,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:33:35,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:33:35,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:33:35,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:35,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:33:35,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:33:35,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:33:35,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:33:35,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:33:35,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:33:35,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:33:35,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:33:36,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:33:36,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:33:36,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:33:36,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:33:36,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:33:36,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:33:36,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7fa1a99/dce434e21c294f5a9b2785036aa79eff/FLAGb0db3a9fb [2020-10-27 23:33:37,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:33:37,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:33:37,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7fa1a99/dce434e21c294f5a9b2785036aa79eff/FLAGb0db3a9fb [2020-10-27 23:33:37,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7fa1a99/dce434e21c294f5a9b2785036aa79eff [2020-10-27 23:33:37,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:33:37,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:33:37,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:37,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:33:37,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:33:37,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:37" (1/1) ... [2020-10-27 23:33:37,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4980f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:37, skipping insertion in model container [2020-10-27 23:33:37,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:37" (1/1) ... [2020-10-27 23:33:37,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:33:37,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:33:39,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:39,188 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:33:39,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:39,959 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:33:39,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39 WrapperNode [2020-10-27 23:33:39,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:39,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:33:39,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:33:39,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:33:39,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:39,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (1/1) ... [2020-10-27 23:33:40,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:33:40,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:33:40,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:33:40,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:33:40,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (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 23:33:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:33:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:33:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:33:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:33:40,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:33:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:33:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:33:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:33:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:33:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:33:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:33:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:33:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:33:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:33:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:33:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:33:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:33:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:33:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:33:44,215 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:33:44,216 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:33:44,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:44 BoogieIcfgContainer [2020-10-27 23:33:44,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:33:44,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:33:44,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:33:44,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:33:44,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:33:37" (1/3) ... [2020-10-27 23:33:44,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e888d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:44, skipping insertion in model container [2020-10-27 23:33:44,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:39" (2/3) ... [2020-10-27 23:33:44,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e888d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:44, skipping insertion in model container [2020-10-27 23:33:44,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:44" (3/3) ... [2020-10-27 23:33:44,232 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:33:44,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:33:44,254 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:33:44,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:33:44,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:33:44,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:33:44,310 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:33:44,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:33:44,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:33:44,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:33:44,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:33:44,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:33:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states. [2020-10-27 23:33:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:33:44,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:44,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:44,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -150847687, now seen corresponding path program 1 times [2020-10-27 23:33:44,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813577722] [2020-10-27 23:33:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:50,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:50,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:33:50,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:33:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 23:33:50,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:33:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 23:33:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-27 23:33:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:33:51,492 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:33:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:51,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:51,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:51,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:33:51,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:51,768 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 23:33:51,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813577722] [2020-10-27 23:33:51,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:51,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:33:51,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256019288] [2020-10-27 23:33:51,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:33:51,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:33:51,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:33:51,801 INFO L87 Difference]: Start difference. First operand 922 states. Second operand 4 states. [2020-10-27 23:33:52,924 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 23:34:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:01,558 INFO L93 Difference]: Finished difference Result 1586 states and 2856 transitions. [2020-10-27 23:34:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:01,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-27 23:34:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:01,601 INFO L225 Difference]: With dead ends: 1586 [2020-10-27 23:34:01,601 INFO L226 Difference]: Without dead ends: 1305 [2020-10-27 23:34:01,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-10-27 23:34:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1302. [2020-10-27 23:34:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2020-10-27 23:34:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1998 transitions. [2020-10-27 23:34:01,780 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1998 transitions. Word has length 305 [2020-10-27 23:34:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:01,782 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 1998 transitions. [2020-10-27 23:34:01,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1998 transitions. [2020-10-27 23:34:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:34:01,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:01,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:01,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:34:01,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash -419222478, now seen corresponding path program 1 times [2020-10-27 23:34:01,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:01,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862603944] [2020-10-27 23:34:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:06,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:06,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:34:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:34:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:34:06,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 23:34:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 23:34:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:07,892 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:34:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:07,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 23:34:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:08,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862603944] [2020-10-27 23:34:08,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:08,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:08,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300641584] [2020-10-27 23:34:08,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:08,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:08,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:08,316 INFO L87 Difference]: Start difference. First operand 1302 states and 1998 transitions. Second operand 4 states. [2020-10-27 23:34:09,197 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 23:34:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:16,684 INFO L93 Difference]: Finished difference Result 2513 states and 3899 transitions. [2020-10-27 23:34:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:16,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-27 23:34:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:16,704 INFO L225 Difference]: With dead ends: 2513 [2020-10-27 23:34:16,704 INFO L226 Difference]: Without dead ends: 2185 [2020-10-27 23:34:16,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-10-27 23:34:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2182. [2020-10-27 23:34:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-10-27 23:34:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3361 transitions. [2020-10-27 23:34:16,807 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3361 transitions. Word has length 305 [2020-10-27 23:34:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:16,810 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 3361 transitions. [2020-10-27 23:34:16,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3361 transitions. [2020-10-27 23:34:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:34:16,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:16,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:16,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:34:16,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash -429719543, now seen corresponding path program 1 times [2020-10-27 23:34:16,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:16,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698237855] [2020-10-27 23:34:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:17,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:34:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:34:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:34:22,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:34:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 23:34:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:34:23,088 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:34:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:34:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:23,310 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 23:34:23,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698237855] [2020-10-27 23:34:23,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:23,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:23,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93362339] [2020-10-27 23:34:23,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:23,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:23,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:23,314 INFO L87 Difference]: Start difference. First operand 2182 states and 3361 transitions. Second operand 5 states. [2020-10-27 23:34:32,597 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:34:35,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:35,157 INFO L93 Difference]: Finished difference Result 6396 states and 9828 transitions. [2020-10-27 23:34:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:34:35,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 23:34:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:35,186 INFO L225 Difference]: With dead ends: 6396 [2020-10-27 23:34:35,186 INFO L226 Difference]: Without dead ends: 4255 [2020-10-27 23:34:35,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:34:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2020-10-27 23:34:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 4197. [2020-10-27 23:34:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4197 states. [2020-10-27 23:34:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 6430 transitions. [2020-10-27 23:34:35,367 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 6430 transitions. Word has length 305 [2020-10-27 23:34:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:35,368 INFO L481 AbstractCegarLoop]: Abstraction has 4197 states and 6430 transitions. [2020-10-27 23:34:35,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 6430 transitions. [2020-10-27 23:34:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 23:34:35,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:35,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:35,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:34:35,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:35,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1914683021, now seen corresponding path program 1 times [2020-10-27 23:34:35,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:35,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221137716] [2020-10-27 23:34:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:40,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 23:34:40,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:34:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:41,497 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:34:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:34:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:41,668 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 23:34:41,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221137716] [2020-10-27 23:34:41,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:41,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:41,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459087318] [2020-10-27 23:34:41,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:41,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:41,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:41,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:41,670 INFO L87 Difference]: Start difference. First operand 4197 states and 6430 transitions. Second operand 5 states. [2020-10-27 23:34:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:53,223 INFO L93 Difference]: Finished difference Result 12253 states and 18694 transitions. [2020-10-27 23:34:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:53,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-27 23:34:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:53,261 INFO L225 Difference]: With dead ends: 12253 [2020-10-27 23:34:53,261 INFO L226 Difference]: Without dead ends: 8263 [2020-10-27 23:34:53,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:34:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2020-10-27 23:34:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 4293. [2020-10-27 23:34:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4293 states. [2020-10-27 23:34:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 6597 transitions. [2020-10-27 23:34:53,597 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 6597 transitions. Word has length 307 [2020-10-27 23:34:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:53,597 INFO L481 AbstractCegarLoop]: Abstraction has 4293 states and 6597 transitions. [2020-10-27 23:34:53,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 6597 transitions. [2020-10-27 23:34:53,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 23:34:53,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:53,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:53,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:34:53,611 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:53,612 INFO L82 PathProgramCache]: Analyzing trace with hash -424237070, now seen corresponding path program 1 times [2020-10-27 23:34:53,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:53,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429483659] [2020-10-27 23:34:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 23:34:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 23:34:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:59,587 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:34:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:59,777 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 23:34:59,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429483659] [2020-10-27 23:34:59,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:59,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:59,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579722262] [2020-10-27 23:34:59,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:59,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:59,781 INFO L87 Difference]: Start difference. First operand 4293 states and 6597 transitions. Second operand 4 states. [2020-10-27 23:35:08,929 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-27 23:35:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:11,378 INFO L93 Difference]: Finished difference Result 12565 states and 19245 transitions. [2020-10-27 23:35:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:11,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 307 [2020-10-27 23:35:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:11,411 INFO L225 Difference]: With dead ends: 12565 [2020-10-27 23:35:11,411 INFO L226 Difference]: Without dead ends: 8395 [2020-10-27 23:35:11,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2020-10-27 23:35:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 8281. [2020-10-27 23:35:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8281 states. [2020-10-27 23:35:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 12621 transitions. [2020-10-27 23:35:11,894 INFO L78 Accepts]: Start accepts. Automaton has 8281 states and 12621 transitions. Word has length 307 [2020-10-27 23:35:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:11,895 INFO L481 AbstractCegarLoop]: Abstraction has 8281 states and 12621 transitions. [2020-10-27 23:35:11,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 8281 states and 12621 transitions. [2020-10-27 23:35:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 23:35:11,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:11,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:11,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:35:11,914 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:11,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1812430724, now seen corresponding path program 1 times [2020-10-27 23:35:11,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:11,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896216442] [2020-10-27 23:35:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 23:35:16,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:35:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 23:35:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 23:35:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:35:17,919 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:35:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:18,077 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 23:35:18,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896216442] [2020-10-27 23:35:18,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:18,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:18,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034092543] [2020-10-27 23:35:18,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:18,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:18,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:18,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:18,080 INFO L87 Difference]: Start difference. First operand 8281 states and 12621 transitions. Second operand 4 states. [2020-10-27 23:35:27,529 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-27 23:35:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:30,166 INFO L93 Difference]: Finished difference Result 23365 states and 35483 transitions. [2020-10-27 23:35:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:30,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-10-27 23:35:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:30,204 INFO L225 Difference]: With dead ends: 23365 [2020-10-27 23:35:30,204 INFO L226 Difference]: Without dead ends: 15339 [2020-10-27 23:35:30,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15339 states. [2020-10-27 23:35:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15339 to 15257. [2020-10-27 23:35:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15257 states. [2020-10-27 23:35:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15257 states to 15257 states and 23057 transitions. [2020-10-27 23:35:31,047 INFO L78 Accepts]: Start accepts. Automaton has 15257 states and 23057 transitions. Word has length 308 [2020-10-27 23:35:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:31,048 INFO L481 AbstractCegarLoop]: Abstraction has 15257 states and 23057 transitions. [2020-10-27 23:35:31,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15257 states and 23057 transitions. [2020-10-27 23:35:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 23:35:31,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:31,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:31,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:35:31,078 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:31,078 INFO L82 PathProgramCache]: Analyzing trace with hash -321849419, now seen corresponding path program 1 times [2020-10-27 23:35:31,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:31,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719722538] [2020-10-27 23:35:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:36,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:35:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:36,992 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:35:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:37,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:37,104 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 23:35:37,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719722538] [2020-10-27 23:35:37,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:37,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:37,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937000982] [2020-10-27 23:35:37,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:37,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:37,107 INFO L87 Difference]: Start difference. First operand 15257 states and 23057 transitions. Second operand 4 states. [2020-10-27 23:35:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:43,795 INFO L93 Difference]: Finished difference Result 43821 states and 65725 transitions. [2020-10-27 23:35:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:35:43,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-10-27 23:35:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:43,851 INFO L225 Difference]: With dead ends: 43821 [2020-10-27 23:35:43,851 INFO L226 Difference]: Without dead ends: 29534 [2020-10-27 23:35:43,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29534 states. [2020-10-27 23:35:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29534 to 15359. [2020-10-27 23:35:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15359 states. [2020-10-27 23:35:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 23192 transitions. [2020-10-27 23:35:44,964 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 23192 transitions. Word has length 309 [2020-10-27 23:35:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:44,964 INFO L481 AbstractCegarLoop]: Abstraction has 15359 states and 23192 transitions. [2020-10-27 23:35:44,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 23192 transitions. [2020-10-27 23:35:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 23:35:44,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:44,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:44,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:35:44,992 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:44,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2144734767, now seen corresponding path program 1 times [2020-10-27 23:35:44,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:44,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660470281] [2020-10-27 23:35:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:50,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:50,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-27 23:35:50,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:35:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:51,083 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:35:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:51,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:51,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:51,205 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 23:35:51,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660470281] [2020-10-27 23:35:51,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:51,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:51,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189185879] [2020-10-27 23:35:51,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:51,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:51,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:51,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:51,208 INFO L87 Difference]: Start difference. First operand 15359 states and 23192 transitions. Second operand 5 states. [2020-10-27 23:35:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:57,253 INFO L93 Difference]: Finished difference Result 28584 states and 42921 transitions. [2020-10-27 23:35:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:57,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-27 23:35:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:57,284 INFO L225 Difference]: With dead ends: 28584 [2020-10-27 23:35:57,284 INFO L226 Difference]: Without dead ends: 14411 [2020-10-27 23:35:57,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:35:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14411 states. [2020-10-27 23:35:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 14353. [2020-10-27 23:35:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14353 states. [2020-10-27 23:35:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14353 states to 14353 states and 21673 transitions. [2020-10-27 23:35:58,146 INFO L78 Accepts]: Start accepts. Automaton has 14353 states and 21673 transitions. Word has length 310 [2020-10-27 23:35:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:58,147 INFO L481 AbstractCegarLoop]: Abstraction has 14353 states and 21673 transitions. [2020-10-27 23:35:58,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14353 states and 21673 transitions. [2020-10-27 23:35:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-27 23:35:58,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:58,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:58,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:35:58,168 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash 743976813, now seen corresponding path program 1 times [2020-10-27 23:35:58,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:58,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061800876] [2020-10-27 23:35:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 23:36:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 23:36:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:04,119 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:36:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:04,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:04,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:04,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:04,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:04,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061800876] [2020-10-27 23:36:04,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:04,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:04,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487941168] [2020-10-27 23:36:04,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:04,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:04,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:04,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:04,274 INFO L87 Difference]: Start difference. First operand 14353 states and 21673 transitions. Second operand 4 states. [2020-10-27 23:36:12,268 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 23:36:14,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:14,193 INFO L93 Difference]: Finished difference Result 39682 states and 59589 transitions. [2020-10-27 23:36:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:14,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-27 23:36:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:14,236 INFO L225 Difference]: With dead ends: 39682 [2020-10-27 23:36:14,236 INFO L226 Difference]: Without dead ends: 26954 [2020-10-27 23:36:14,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26954 states. [2020-10-27 23:36:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26954 to 26456. [2020-10-27 23:36:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26456 states. [2020-10-27 23:36:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26456 states to 26456 states and 39639 transitions. [2020-10-27 23:36:15,894 INFO L78 Accepts]: Start accepts. Automaton has 26456 states and 39639 transitions. Word has length 316 [2020-10-27 23:36:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:15,895 INFO L481 AbstractCegarLoop]: Abstraction has 26456 states and 39639 transitions. [2020-10-27 23:36:15,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 26456 states and 39639 transitions. [2020-10-27 23:36:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-27 23:36:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:15,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:15,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:36:15,924 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash -508575864, now seen corresponding path program 1 times [2020-10-27 23:36:15,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:15,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97968737] [2020-10-27 23:36:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 23:36:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:36:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 23:36:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:36:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 23:36:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:21,931 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:36:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:22,087 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 23:36:22,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97968737] [2020-10-27 23:36:22,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:22,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:22,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724555235] [2020-10-27 23:36:22,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:22,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:22,090 INFO L87 Difference]: Start difference. First operand 26456 states and 39639 transitions. Second operand 5 states. [2020-10-27 23:36:31,078 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:36:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:33,928 INFO L93 Difference]: Finished difference Result 53533 states and 80158 transitions. [2020-10-27 23:36:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:36:33,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-27 23:36:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:33,968 INFO L225 Difference]: With dead ends: 53533 [2020-10-27 23:36:33,968 INFO L226 Difference]: Without dead ends: 27130 [2020-10-27 23:36:33,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:36:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27130 states. [2020-10-27 23:36:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27130 to 26342. [2020-10-27 23:36:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26342 states. [2020-10-27 23:36:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26342 states to 26342 states and 39433 transitions. [2020-10-27 23:36:35,733 INFO L78 Accepts]: Start accepts. Automaton has 26342 states and 39433 transitions. Word has length 316 [2020-10-27 23:36:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:35,734 INFO L481 AbstractCegarLoop]: Abstraction has 26342 states and 39433 transitions. [2020-10-27 23:36:35,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 26342 states and 39433 transitions. [2020-10-27 23:36:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-27 23:36:35,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:35,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:35,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:36:35,755 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:35,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:35,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1279789192, now seen corresponding path program 1 times [2020-10-27 23:36:35,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:35,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187876246] [2020-10-27 23:36:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:40,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 23:36:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:41,769 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:36:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:42,004 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 23:36:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187876246] [2020-10-27 23:36:42,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:42,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:42,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100436023] [2020-10-27 23:36:42,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:42,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:42,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:42,006 INFO L87 Difference]: Start difference. First operand 26342 states and 39433 transitions. Second operand 5 states. [2020-10-27 23:36:52,146 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:36:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:55,422 INFO L93 Difference]: Finished difference Result 78285 states and 117157 transitions. [2020-10-27 23:36:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:36:55,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-27 23:36:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:55,477 INFO L225 Difference]: With dead ends: 78285 [2020-10-27 23:36:55,477 INFO L226 Difference]: Without dead ends: 51956 [2020-10-27 23:36:55,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:36:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51956 states. [2020-10-27 23:36:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51956 to 51542. [2020-10-27 23:36:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51542 states. [2020-10-27 23:36:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51542 states to 51542 states and 76752 transitions. [2020-10-27 23:36:58,533 INFO L78 Accepts]: Start accepts. Automaton has 51542 states and 76752 transitions. Word has length 318 [2020-10-27 23:36:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:58,533 INFO L481 AbstractCegarLoop]: Abstraction has 51542 states and 76752 transitions. [2020-10-27 23:36:58,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 51542 states and 76752 transitions. [2020-10-27 23:36:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-27 23:36:58,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:58,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:58,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:36:58,584 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:58,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:58,585 INFO L82 PathProgramCache]: Analyzing trace with hash 485322644, now seen corresponding path program 1 times [2020-10-27 23:36:58,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:58,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408639921] [2020-10-27 23:36:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:37:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:37:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 23:37:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:04,508 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 23:37:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:04,678 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 23:37:04,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408639921] [2020-10-27 23:37:04,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:04,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:37:04,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372113469] [2020-10-27 23:37:04,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:37:04,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:37:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:37:04,680 INFO L87 Difference]: Start difference. First operand 51542 states and 76752 transitions. Second operand 4 states.