/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.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:26:07,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:26:07,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:26:07,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:26:07,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:26:07,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:26:07,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:26:07,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:26:07,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:26:07,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:26:07,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:26:07,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:26:07,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:26:07,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:26:07,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:26:07,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:26:07,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:26:07,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:26:07,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:26:07,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:26:07,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:26:07,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:26:07,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:26:07,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:26:07,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:26:07,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:26:07,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:26:07,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:26:07,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:26:07,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:26:07,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:26:07,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:26:07,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:26:07,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:26:07,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:26:07,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:26:07,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:26:07,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:26:07,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:26:07,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:26:07,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:26:07,782 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 23:26:07,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:26:07,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:26:07,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:26:07,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:26:07,828 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:26:07,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:26:07,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:26:07,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:26:07,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:26:07,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:26:07,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:26:07,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:26:07,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:26:07,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:26:07,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:26:07,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:26:07,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:26:07,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:26:07,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:26:07,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:26:07,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:26:07,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:26:07,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:26:07,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:26:07,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:26:07,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:26:07,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:26:07,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:26:07,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:26:07,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:26:08,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:26:08,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:26:08,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:26:08,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:26:08,243 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:26:08,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:26:08,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2afa1e6/a6a2a175c48e4f7e84096c13e75f2c7b/FLAG301c679ab [2020-10-27 23:26:09,068 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:26:09,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:26:09,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2afa1e6/a6a2a175c48e4f7e84096c13e75f2c7b/FLAG301c679ab [2020-10-27 23:26:09,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2afa1e6/a6a2a175c48e4f7e84096c13e75f2c7b [2020-10-27 23:26:09,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:26:09,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:26:09,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:26:09,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:26:09,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:26:09,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:26:09" (1/1) ... [2020-10-27 23:26:09,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc7aac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:09, skipping insertion in model container [2020-10-27 23:26:09,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:26:09" (1/1) ... [2020-10-27 23:26:09,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:26:09,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:26:09,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:26:09,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:26:10,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:26:10,178 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:26:10,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10 WrapperNode [2020-10-27 23:26:10,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:26:10,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:26:10,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:26:10,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:26:10,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (1/1) ... [2020-10-27 23:26:10,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:26:10,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:26:10,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:26:10,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:26:10,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (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 23:26:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:26:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:26:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:26:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:26:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:26:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:26:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:26:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:26:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:26:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:26:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:26:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:26:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:26:11,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:26:11,873 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:26:11,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:26:11 BoogieIcfgContainer [2020-10-27 23:26:11,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:26:11,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:26:11,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:26:11,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:26:11,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:26:09" (1/3) ... [2020-10-27 23:26:11,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e063793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:26:11, skipping insertion in model container [2020-10-27 23:26:11,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:10" (2/3) ... [2020-10-27 23:26:11,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e063793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:26:11, skipping insertion in model container [2020-10-27 23:26:11,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:26:11" (3/3) ... [2020-10-27 23:26:11,885 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:26:11,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:26:11,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:26:11,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:26:11,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:26:11,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:26:11,947 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:26:11,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:26:11,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:26:11,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:26:11,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:26:11,948 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:26:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-27 23:26:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 23:26:11,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:11,990 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] [2020-10-27 23:26:11,990 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash 745824183, now seen corresponding path program 1 times [2020-10-27 23:26:12,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:12,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960257181] [2020-10-27 23:26:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 23:26:17,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:26:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:26:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:26:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 23:26:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:26:17,892 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:18,011 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 23:26:18,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960257181] [2020-10-27 23:26:18,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:18,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:18,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079360131] [2020-10-27 23:26:18,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:18,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:18,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:18,045 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2020-10-27 23:26:18,469 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:26:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:20,286 INFO L93 Difference]: Finished difference Result 625 states and 1094 transitions. [2020-10-27 23:26:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:20,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-27 23:26:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:20,308 INFO L225 Difference]: With dead ends: 625 [2020-10-27 23:26:20,308 INFO L226 Difference]: Without dead ends: 494 [2020-10-27 23:26:20,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-27 23:26:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 491. [2020-10-27 23:26:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-27 23:26:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 728 transitions. [2020-10-27 23:26:20,413 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 728 transitions. Word has length 148 [2020-10-27 23:26:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:20,414 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 728 transitions. [2020-10-27 23:26:20,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 728 transitions. [2020-10-27 23:26:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 23:26:20,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:20,420 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] [2020-10-27 23:26:20,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:26:20,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1552828893, now seen corresponding path program 1 times [2020-10-27 23:26:20,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:20,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232161762] [2020-10-27 23:26:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:24,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:25,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:25,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:26:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:26:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:26,014 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:26,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:26:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 31 [2020-10-27 23:26:26,156 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 23:26:26,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232161762] [2020-10-27 23:26:26,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:26,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:26:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511653472] [2020-10-27 23:26:26,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:26:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:26:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:26,161 INFO L87 Difference]: Start difference. First operand 491 states and 728 transitions. Second operand 5 states. [2020-10-27 23:26:28,371 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:26:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:29,369 INFO L93 Difference]: Finished difference Result 1425 states and 2109 transitions. [2020-10-27 23:26:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:26:29,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 23:26:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:29,377 INFO L225 Difference]: With dead ends: 1425 [2020-10-27 23:26:29,377 INFO L226 Difference]: Without dead ends: 955 [2020-10-27 23:26:29,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:26:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-27 23:26:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 952. [2020-10-27 23:26:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-10-27 23:26:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1402 transitions. [2020-10-27 23:26:29,517 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1402 transitions. Word has length 148 [2020-10-27 23:26:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:29,517 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1402 transitions. [2020-10-27 23:26:29,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:26:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1402 transitions. [2020-10-27 23:26:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 23:26:29,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:29,524 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] [2020-10-27 23:26:29,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:26:29,525 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash 299769509, now seen corresponding path program 1 times [2020-10-27 23:26:29,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:29,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064413339] [2020-10-27 23:26:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:30,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:34,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 23:26:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:26:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:34,993 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:35,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:35,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:26:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:26:35,082 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 23:26:35,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064413339] [2020-10-27 23:26:35,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:35,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:26:35,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92166997] [2020-10-27 23:26:35,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:26:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:26:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:35,089 INFO L87 Difference]: Start difference. First operand 952 states and 1402 transitions. Second operand 5 states. [2020-10-27 23:26:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:36,550 INFO L93 Difference]: Finished difference Result 1887 states and 2778 transitions. [2020-10-27 23:26:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:36,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 23:26:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:36,558 INFO L225 Difference]: With dead ends: 1887 [2020-10-27 23:26:36,560 INFO L226 Difference]: Without dead ends: 952 [2020-10-27 23:26:36,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:26:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-27 23:26:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2020-10-27 23:26:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-10-27 23:26:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1398 transitions. [2020-10-27 23:26:36,645 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1398 transitions. Word has length 149 [2020-10-27 23:26:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:36,646 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1398 transitions. [2020-10-27 23:26:36,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:26:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1398 transitions. [2020-10-27 23:26:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 23:26:36,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:36,656 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] [2020-10-27 23:26:36,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:26:36,656 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1243336500, now seen corresponding path program 1 times [2020-10-27 23:26:36,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:36,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992127015] [2020-10-27 23:26:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:41,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 23:26:41,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:26:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:26:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:26:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 23:26:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:26:42,086 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:42,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:42,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:42,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:26:42,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:26:42,208 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 23:26:42,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992127015] [2020-10-27 23:26:42,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:42,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:42,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121956135] [2020-10-27 23:26:42,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:42,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:42,212 INFO L87 Difference]: Start difference. First operand 952 states and 1398 transitions. Second operand 4 states. [2020-10-27 23:26:44,118 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:26:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:45,035 INFO L93 Difference]: Finished difference Result 2203 states and 3251 transitions. [2020-10-27 23:26:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:45,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-27 23:26:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:45,048 INFO L225 Difference]: With dead ends: 2203 [2020-10-27 23:26:45,048 INFO L226 Difference]: Without dead ends: 1404 [2020-10-27 23:26:45,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-27 23:26:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1401. [2020-10-27 23:26:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1401 states. [2020-10-27 23:26:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2031 transitions. [2020-10-27 23:26:45,157 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2031 transitions. Word has length 150 [2020-10-27 23:26:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:45,159 INFO L481 AbstractCegarLoop]: Abstraction has 1401 states and 2031 transitions. [2020-10-27 23:26:45,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2031 transitions. [2020-10-27 23:26:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 23:26:45,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:45,163 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] [2020-10-27 23:26:45,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:26:45,163 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash 695296604, now seen corresponding path program 1 times [2020-10-27 23:26:45,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:45,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845294233] [2020-10-27 23:26:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:50,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 23:26:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:26:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:26:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:26:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 23:26:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 23:26:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:50,534 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:50,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:50,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:50,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:26:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:50,619 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 23:26:50,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845294233] [2020-10-27 23:26:50,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:50,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:26:50,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903672181] [2020-10-27 23:26:50,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:26:50,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:50,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:26:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:50,633 INFO L87 Difference]: Start difference. First operand 1401 states and 2031 transitions. Second operand 5 states. [2020-10-27 23:26:50,909 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:26:52,438 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:26:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:53,413 INFO L93 Difference]: Finished difference Result 3602 states and 5448 transitions. [2020-10-27 23:26:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:26:53,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 23:26:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:53,433 INFO L225 Difference]: With dead ends: 3602 [2020-10-27 23:26:53,433 INFO L226 Difference]: Without dead ends: 3049 [2020-10-27 23:26:53,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:26:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2020-10-27 23:26:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3043. [2020-10-27 23:26:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-10-27 23:26:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4515 transitions. [2020-10-27 23:26:53,631 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4515 transitions. Word has length 153 [2020-10-27 23:26:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:53,633 INFO L481 AbstractCegarLoop]: Abstraction has 3043 states and 4515 transitions. [2020-10-27 23:26:53,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:26:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4515 transitions. [2020-10-27 23:26:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 23:26:53,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:53,639 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] [2020-10-27 23:26:53,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:26:53,640 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2012004478, now seen corresponding path program 1 times [2020-10-27 23:26:53,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:53,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931950316] [2020-10-27 23:26:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:53,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:58,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:58,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 23:26:58,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:26:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:26:58,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:26:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:26:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 23:26:58,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:59,018 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:26:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:59,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:59,141 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 23:26:59,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931950316] [2020-10-27 23:26:59,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:59,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:26:59,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266130867] [2020-10-27 23:26:59,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:26:59,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:26:59,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:59,145 INFO L87 Difference]: Start difference. First operand 3043 states and 4515 transitions. Second operand 5 states. [2020-10-27 23:27:00,946 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:27:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:01,946 INFO L93 Difference]: Finished difference Result 8863 states and 13119 transitions. [2020-10-27 23:27:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:27:01,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 23:27:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:01,976 INFO L225 Difference]: With dead ends: 8863 [2020-10-27 23:27:01,977 INFO L226 Difference]: Without dead ends: 5875 [2020-10-27 23:27:01,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:27:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2020-10-27 23:27:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5872. [2020-10-27 23:27:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5872 states. [2020-10-27 23:27:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 8610 transitions. [2020-10-27 23:27:02,454 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 8610 transitions. Word has length 153 [2020-10-27 23:27:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:02,455 INFO L481 AbstractCegarLoop]: Abstraction has 5872 states and 8610 transitions. [2020-10-27 23:27:02,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:27:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 8610 transitions. [2020-10-27 23:27:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 23:27:02,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:02,464 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] [2020-10-27 23:27:02,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:27:02,464 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1848117052, now seen corresponding path program 1 times [2020-10-27 23:27:02,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:02,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676968421] [2020-10-27 23:27:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 23:27:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:27:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:07,834 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:07,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:07,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:07,894 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 23:27:07,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676968421] [2020-10-27 23:27:07,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:07,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:27:07,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547727459] [2020-10-27 23:27:07,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:27:07,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:07,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:27:07,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:07,897 INFO L87 Difference]: Start difference. First operand 5872 states and 8610 transitions. Second operand 5 states. [2020-10-27 23:27:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:09,323 INFO L93 Difference]: Finished difference Result 11466 states and 16853 transitions. [2020-10-27 23:27:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:27:09,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 23:27:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:09,353 INFO L225 Difference]: With dead ends: 11466 [2020-10-27 23:27:09,354 INFO L226 Difference]: Without dead ends: 5872 [2020-10-27 23:27:09,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:27:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2020-10-27 23:27:09,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 5872. [2020-10-27 23:27:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5872 states. [2020-10-27 23:27:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 8604 transitions. [2020-10-27 23:27:09,880 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 8604 transitions. Word has length 154 [2020-10-27 23:27:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:09,881 INFO L481 AbstractCegarLoop]: Abstraction has 5872 states and 8604 transitions. [2020-10-27 23:27:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:27:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 8604 transitions. [2020-10-27 23:27:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 23:27:09,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:09,892 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] [2020-10-27 23:27:09,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:27:09,892 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1238606415, now seen corresponding path program 1 times [2020-10-27 23:27:09,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:09,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730852511] [2020-10-27 23:27:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:11,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:11,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:27:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:15,224 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:15,283 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 23:27:15,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730852511] [2020-10-27 23:27:15,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:15,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:27:15,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570069400] [2020-10-27 23:27:15,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:27:15,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:15,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:27:15,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:15,285 INFO L87 Difference]: Start difference. First operand 5872 states and 8604 transitions. Second operand 4 states. [2020-10-27 23:27:17,097 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:27:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:17,924 INFO L93 Difference]: Finished difference Result 14118 states and 20767 transitions. [2020-10-27 23:27:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:27:17,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-27 23:27:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:17,969 INFO L225 Difference]: With dead ends: 14118 [2020-10-27 23:27:17,969 INFO L226 Difference]: Without dead ends: 8632 [2020-10-27 23:27:17,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8632 states. [2020-10-27 23:27:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8632 to 8629. [2020-10-27 23:27:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8629 states. [2020-10-27 23:27:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8629 states to 8629 states and 12524 transitions. [2020-10-27 23:27:18,498 INFO L78 Accepts]: Start accepts. Automaton has 8629 states and 12524 transitions. Word has length 155 [2020-10-27 23:27:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:18,498 INFO L481 AbstractCegarLoop]: Abstraction has 8629 states and 12524 transitions. [2020-10-27 23:27:18,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:27:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 8629 states and 12524 transitions. [2020-10-27 23:27:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:27:18,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:18,512 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] [2020-10-27 23:27:18,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:27:18,512 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1630608035, now seen corresponding path program 1 times [2020-10-27 23:27:18,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:18,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555622061] [2020-10-27 23:27:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:18,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:27:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:23,909 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:23,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:23,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:23,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:27:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:23,946 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 23:27:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555622061] [2020-10-27 23:27:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:27:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700398444] [2020-10-27 23:27:23,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:27:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:27:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:23,949 INFO L87 Difference]: Start difference. First operand 8629 states and 12524 transitions. Second operand 4 states. [2020-10-27 23:27:25,552 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:27:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:26,296 INFO L93 Difference]: Finished difference Result 19884 states and 29462 transitions. [2020-10-27 23:27:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:27:26,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-27 23:27:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:26,330 INFO L225 Difference]: With dead ends: 19884 [2020-10-27 23:27:26,330 INFO L226 Difference]: Without dead ends: 14279 [2020-10-27 23:27:26,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14279 states. [2020-10-27 23:27:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14279 to 14276. [2020-10-27 23:27:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14276 states. [2020-10-27 23:27:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14276 states to 14276 states and 20912 transitions. [2020-10-27 23:27:27,081 INFO L78 Accepts]: Start accepts. Automaton has 14276 states and 20912 transitions. Word has length 160 [2020-10-27 23:27:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:27,081 INFO L481 AbstractCegarLoop]: Abstraction has 14276 states and 20912 transitions. [2020-10-27 23:27:27,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:27:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14276 states and 20912 transitions. [2020-10-27 23:27:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:27:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:27,100 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] [2020-10-27 23:27:27,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:27:27,100 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:27,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1786612792, now seen corresponding path program 1 times [2020-10-27 23:27:27,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:27,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824952217] [2020-10-27 23:27:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:32,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:32,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:27:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 23:27:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:32,536 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:32,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:32,591 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 23:27:32,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824952217] [2020-10-27 23:27:32,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:32,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:27:32,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942418351] [2020-10-27 23:27:32,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:27:32,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:27:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:32,593 INFO L87 Difference]: Start difference. First operand 14276 states and 20912 transitions. Second operand 5 states. [2020-10-27 23:27:34,775 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:27:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:36,477 INFO L93 Difference]: Finished difference Result 41803 states and 61099 transitions. [2020-10-27 23:27:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:27:36,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 23:27:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:36,548 INFO L225 Difference]: With dead ends: 41803 [2020-10-27 23:27:36,548 INFO L226 Difference]: Without dead ends: 27588 [2020-10-27 23:27:36,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:27:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27588 states. [2020-10-27 23:27:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27588 to 27585. [2020-10-27 23:27:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27585 states. [2020-10-27 23:27:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27585 states to 27585 states and 39910 transitions. [2020-10-27 23:27:38,082 INFO L78 Accepts]: Start accepts. Automaton has 27585 states and 39910 transitions. Word has length 160 [2020-10-27 23:27:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:38,082 INFO L481 AbstractCegarLoop]: Abstraction has 27585 states and 39910 transitions. [2020-10-27 23:27:38,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:27:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27585 states and 39910 transitions. [2020-10-27 23:27:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 23:27:38,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:38,109 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] [2020-10-27 23:27:38,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:27:38,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1499111861, now seen corresponding path program 1 times [2020-10-27 23:27:38,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:38,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454251338] [2020-10-27 23:27:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:43,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:43,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:27:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:43,443 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:43,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:43,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:43,489 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 23:27:43,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454251338] [2020-10-27 23:27:43,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:43,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:27:43,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719690741] [2020-10-27 23:27:43,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:27:43,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:43,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:27:43,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:43,492 INFO L87 Difference]: Start difference. First operand 27585 states and 39910 transitions. Second operand 4 states. [2020-10-27 23:27:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:47,559 INFO L93 Difference]: Finished difference Result 82423 states and 119307 transitions. [2020-10-27 23:27:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:27:47,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-27 23:27:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:47,674 INFO L225 Difference]: With dead ends: 82423 [2020-10-27 23:27:47,674 INFO L226 Difference]: Without dead ends: 55102 [2020-10-27 23:27:47,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55102 states. [2020-10-27 23:27:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55102 to 27595. [2020-10-27 23:27:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27595 states. [2020-10-27 23:27:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27595 states to 27595 states and 39920 transitions. [2020-10-27 23:27:50,213 INFO L78 Accepts]: Start accepts. Automaton has 27595 states and 39920 transitions. Word has length 161 [2020-10-27 23:27:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:50,213 INFO L481 AbstractCegarLoop]: Abstraction has 27595 states and 39920 transitions. [2020-10-27 23:27:50,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:27:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 27595 states and 39920 transitions. [2020-10-27 23:27:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:27:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:50,237 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] [2020-10-27 23:27:50,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:27:50,238 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 876991849, now seen corresponding path program 1 times [2020-10-27 23:27:50,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:50,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373886400] [2020-10-27 23:27:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 23:27:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:55,651 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:27:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:55,704 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 23:27:55,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373886400] [2020-10-27 23:27:55,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:55,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:27:55,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724234649] [2020-10-27 23:27:55,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:27:55,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:55,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:27:55,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:27:55,706 INFO L87 Difference]: Start difference. First operand 27595 states and 39920 transitions. Second operand 6 states. [2020-10-27 23:27:56,022 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:27:58,366 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:28:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:01,088 INFO L93 Difference]: Finished difference Result 70082 states and 103990 transitions. [2020-10-27 23:28:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:28:01,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-27 23:28:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:01,196 INFO L225 Difference]: With dead ends: 70082 [2020-10-27 23:28:01,196 INFO L226 Difference]: Without dead ends: 52857 [2020-10-27 23:28:01,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:28:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52857 states. [2020-10-27 23:28:04,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52857 to 52854. [2020-10-27 23:28:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52854 states. [2020-10-27 23:28:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52854 states to 52854 states and 76274 transitions. [2020-10-27 23:28:04,709 INFO L78 Accepts]: Start accepts. Automaton has 52854 states and 76274 transitions. Word has length 162 [2020-10-27 23:28:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:04,710 INFO L481 AbstractCegarLoop]: Abstraction has 52854 states and 76274 transitions. [2020-10-27 23:28:04,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:28:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 52854 states and 76274 transitions. [2020-10-27 23:28:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:28:04,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:04,747 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] [2020-10-27 23:28:04,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:28:04,747 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:04,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1740655290, now seen corresponding path program 1 times [2020-10-27 23:28:04,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960844163] [2020-10-27 23:28:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:28:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 23:28:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:10,125 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:28:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:28:10,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960844163] [2020-10-27 23:28:10,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:10,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:28:10,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369310056] [2020-10-27 23:28:10,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:28:10,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:28:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:28:10,192 INFO L87 Difference]: Start difference. First operand 52854 states and 76274 transitions. Second operand 6 states. [2020-10-27 23:28:10,520 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:28:12,677 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:28:13,372 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:28:13,705 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:28:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:20,491 INFO L93 Difference]: Finished difference Result 144705 states and 219384 transitions. [2020-10-27 23:28:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:28:20,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-27 23:28:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:20,696 INFO L225 Difference]: With dead ends: 144705 [2020-10-27 23:28:20,696 INFO L226 Difference]: Without dead ends: 115142 [2020-10-27 23:28:20,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:28:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115142 states. [2020-10-27 23:28:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115142 to 87322. [2020-10-27 23:28:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87322 states. [2020-10-27 23:28:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87322 states to 87322 states and 128870 transitions. [2020-10-27 23:28:27,607 INFO L78 Accepts]: Start accepts. Automaton has 87322 states and 128870 transitions. Word has length 162 [2020-10-27 23:28:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:27,608 INFO L481 AbstractCegarLoop]: Abstraction has 87322 states and 128870 transitions. [2020-10-27 23:28:27,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:28:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 87322 states and 128870 transitions. [2020-10-27 23:28:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:28:27,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:27,636 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] [2020-10-27 23:28:27,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:28:27,636 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1936399055, now seen corresponding path program 1 times [2020-10-27 23:28:27,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:27,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258965267] [2020-10-27 23:28:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:28:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:28:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:28:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:32,991 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:28:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:33,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:33,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:33,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:33,031 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 23:28:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258965267] [2020-10-27 23:28:33,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:33,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:28:33,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362447689] [2020-10-27 23:28:33,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:28:33,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:28:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:28:33,033 INFO L87 Difference]: Start difference. First operand 87322 states and 128870 transitions. Second operand 5 states. [2020-10-27 23:28:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:40,179 INFO L93 Difference]: Finished difference Result 174441 states and 257486 transitions. [2020-10-27 23:28:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:28:40,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 23:28:40,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:40,328 INFO L225 Difference]: With dead ends: 174441 [2020-10-27 23:28:40,328 INFO L226 Difference]: Without dead ends: 87322 [2020-10-27 23:28:40,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:28:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87322 states. [2020-10-27 23:28:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87322 to 87313. [2020-10-27 23:28:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87313 states. [2020-10-27 23:28:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87313 states to 87313 states and 128855 transitions. [2020-10-27 23:28:46,734 INFO L78 Accepts]: Start accepts. Automaton has 87313 states and 128855 transitions. Word has length 162 [2020-10-27 23:28:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:46,734 INFO L481 AbstractCegarLoop]: Abstraction has 87313 states and 128855 transitions. [2020-10-27 23:28:46,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:28:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 87313 states and 128855 transitions. [2020-10-27 23:28:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:28:46,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:46,759 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] [2020-10-27 23:28:46,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:28:46,759 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:46,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:46,759 INFO L82 PathProgramCache]: Analyzing trace with hash 145143211, now seen corresponding path program 1 times [2020-10-27 23:28:46,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:46,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573506073] [2020-10-27 23:28:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:28:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 23:28:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:52,087 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:28:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:52,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:52,148 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 23:28:52,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573506073] [2020-10-27 23:28:52,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:52,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:28:52,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311916020] [2020-10-27 23:28:52,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:28:52,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:52,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:28:52,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:28:52,151 INFO L87 Difference]: Start difference. First operand 87313 states and 128855 transitions. Second operand 4 states. [2020-10-27 23:28:55,873 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:29:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:05,065 INFO L93 Difference]: Finished difference Result 236750 states and 348313 transitions. [2020-10-27 23:29:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:29:05,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-27 23:29:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:05,491 INFO L225 Difference]: With dead ends: 236750 [2020-10-27 23:29:05,491 INFO L226 Difference]: Without dead ends: 150750 [2020-10-27 23:29:05,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:29:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150750 states. [2020-10-27 23:29:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150750 to 150747. [2020-10-27 23:29:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150747 states. [2020-10-27 23:29:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150747 states to 150747 states and 218629 transitions. [2020-10-27 23:29:16,760 INFO L78 Accepts]: Start accepts. Automaton has 150747 states and 218629 transitions. Word has length 162 [2020-10-27 23:29:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:29:16,760 INFO L481 AbstractCegarLoop]: Abstraction has 150747 states and 218629 transitions. [2020-10-27 23:29:16,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:29:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 150747 states and 218629 transitions. [2020-10-27 23:29:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:29:16,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:16,822 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] [2020-10-27 23:29:16,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:29:16,823 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:16,823 INFO L82 PathProgramCache]: Analyzing trace with hash 907875720, now seen corresponding path program 1 times [2020-10-27 23:29:16,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:16,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069800616] [2020-10-27 23:29:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:16,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:22,204 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:29:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:29:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:29:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:29:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:29:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:22,269 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 23:29:22,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069800616] [2020-10-27 23:29:22,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:29:22,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:29:22,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440510843] [2020-10-27 23:29:22,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:29:22,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:29:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:29:22,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:29:22,271 INFO L87 Difference]: Start difference. First operand 150747 states and 218629 transitions. Second operand 5 states. [2020-10-27 23:29:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:33,170 INFO L93 Difference]: Finished difference Result 278914 states and 404852 transitions. [2020-10-27 23:29:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:29:33,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 23:29:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:33,439 INFO L225 Difference]: With dead ends: 278914 [2020-10-27 23:29:33,439 INFO L226 Difference]: Without dead ends: 129336 [2020-10-27 23:29:33,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:29:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129336 states.