/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:53:43,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:53:43,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:53:43,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:53:43,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:53:43,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:53:43,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:53:43,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:53:43,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:53:43,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:53:43,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:53:43,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:53:43,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:53:43,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:53:43,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:53:43,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:53:43,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:53:43,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:53:43,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:53:43,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:53:43,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:53:43,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:53:43,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:53:43,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:53:43,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:53:43,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:53:43,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:53:43,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:53:43,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:53:43,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:53:43,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:53:43,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:53:43,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:53:43,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:53:43,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:53:43,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:53:43,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:53:43,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:53:43,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:53:43,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:53:43,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:53:43,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:53:43,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:53:43,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:53:43,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:53:43,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:53:43,774 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:53:43,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:53:43,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:53:43,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:53:43,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:53:43,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:53:43,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:53:43,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:53:43,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:53:43,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:53:43,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:53:43,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:53:43,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:53:43,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:53:43,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:53:43,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:53:43,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:53:43,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:53:43,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:53:43,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:53:43,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:53:44,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:53:44,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:53:44,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:53:44,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:53:44,190 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:53:44,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:53:44,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57279149d/be691402249a44ea8dbc1ba97c21bdfc/FLAGdee678f2f [2020-10-27 05:53:44,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:53:44,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:53:44,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57279149d/be691402249a44ea8dbc1ba97c21bdfc/FLAGdee678f2f [2020-10-27 05:53:45,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57279149d/be691402249a44ea8dbc1ba97c21bdfc [2020-10-27 05:53:45,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:53:45,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:53:45,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:53:45,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:53:45,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:53:45,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:45,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d3f98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45, skipping insertion in model container [2020-10-27 05:53:45,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:45,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:53:45,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:53:45,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:53:45,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:53:45,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:53:45,960 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:53:45,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45 WrapperNode [2020-10-27 05:53:45,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:53:45,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:53:45,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:53:45,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:53:45,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:45,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:45,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:45,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:46,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:46,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:46,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... [2020-10-27 05:53:46,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:53:46,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:53:46,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:53:46,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:53:46,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:53:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:53:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:53:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:53:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:53:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:53:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:53:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:53:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:53:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:53:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:53:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:53:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:53:47,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:53:47,616 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:53:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:53:47 BoogieIcfgContainer [2020-10-27 05:53:47,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:53:47,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:53:47,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:53:47,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:53:47,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:53:45" (1/3) ... [2020-10-27 05:53:47,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac82fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:53:47, skipping insertion in model container [2020-10-27 05:53:47,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:53:45" (2/3) ... [2020-10-27 05:53:47,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac82fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:53:47, skipping insertion in model container [2020-10-27 05:53:47,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:53:47" (3/3) ... [2020-10-27 05:53:47,628 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:53:47,639 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:53:47,645 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:53:47,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:53:47,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:53:47,692 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:53:47,692 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:53:47,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:53:47,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:53:47,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:53:47,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:53:47,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:53:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2020-10-27 05:53:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 05:53:47,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:53:47,733 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] [2020-10-27 05:53:47,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:53:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:53:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1134591196, now seen corresponding path program 1 times [2020-10-27 05:53:47,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:53:47,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967836626] [2020-10-27 05:53:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:53:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 05:53:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:53:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:53:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:53:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:53:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:53:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:53:53,848 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:53:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:53:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:53:53,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:53:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:53:53,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:53:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:53:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:53:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:53:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:53:54,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967836626] [2020-10-27 05:53:54,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:53:54,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:53:54,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819779787] [2020-10-27 05:53:54,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:53:54,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:53:54,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:53:54,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:53:54,037 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 9 states. [2020-10-27 05:53:56,091 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:53:56,476 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:53:56,888 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:53:57,298 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:53:57,719 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:53:58,135 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:53:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:53:58,851 INFO L93 Difference]: Finished difference Result 1179 states and 1939 transitions. [2020-10-27 05:53:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:53:58,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 05:53:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:53:58,906 INFO L225 Difference]: With dead ends: 1179 [2020-10-27 05:53:58,906 INFO L226 Difference]: Without dead ends: 987 [2020-10-27 05:53:58,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:53:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-27 05:53:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 972. [2020-10-27 05:53:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-27 05:53:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1477 transitions. [2020-10-27 05:53:59,083 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1477 transitions. Word has length 102 [2020-10-27 05:53:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:53:59,084 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1477 transitions. [2020-10-27 05:53:59,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:53:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1477 transitions. [2020-10-27 05:53:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:53:59,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:53:59,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:53:59,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:53:59,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:53:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:53:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash 942418188, now seen corresponding path program 1 times [2020-10-27 05:53:59,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:53:59,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144779054] [2020-10-27 05:53:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:53:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:01,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:01,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:01,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2812 [2020-10-27 05:54:01,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 05:54:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 05:54:02,361 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:54:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:02,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144779054] [2020-10-27 05:54:02,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:02,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:02,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495668789] [2020-10-27 05:54:02,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:02,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:02,459 INFO L87 Difference]: Start difference. First operand 972 states and 1477 transitions. Second operand 6 states. [2020-10-27 05:54:02,902 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:54:04,082 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:54:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:04,754 INFO L93 Difference]: Finished difference Result 2314 states and 3597 transitions. [2020-10-27 05:54:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:04,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:04,765 INFO L225 Difference]: With dead ends: 2314 [2020-10-27 05:54:04,765 INFO L226 Difference]: Without dead ends: 1545 [2020-10-27 05:54:04,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:54:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-10-27 05:54:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1542. [2020-10-27 05:54:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-10-27 05:54:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2375 transitions. [2020-10-27 05:54:04,888 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2375 transitions. Word has length 103 [2020-10-27 05:54:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:04,888 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2375 transitions. [2020-10-27 05:54:04,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2375 transitions. [2020-10-27 05:54:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:54:04,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:04,892 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] [2020-10-27 05:54:04,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:54:04,892 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:04,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1845411843, now seen corresponding path program 1 times [2020-10-27 05:54:04,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:04,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028008483] [2020-10-27 05:54:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2382 [2020-10-27 05:54:07,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:54:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:54:07,767 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:07,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:07,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:54:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028008483] [2020-10-27 05:54:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:07,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062082645] [2020-10-27 05:54:07,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:07,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:07,862 INFO L87 Difference]: Start difference. First operand 1542 states and 2375 transitions. Second operand 6 states. [2020-10-27 05:54:08,287 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:54:09,408 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:54:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:10,081 INFO L93 Difference]: Finished difference Result 4057 states and 6332 transitions. [2020-10-27 05:54:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:10,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:10,098 INFO L225 Difference]: With dead ends: 4057 [2020-10-27 05:54:10,099 INFO L226 Difference]: Without dead ends: 2677 [2020-10-27 05:54:10,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:54:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-10-27 05:54:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2674. [2020-10-27 05:54:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-10-27 05:54:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4147 transitions. [2020-10-27 05:54:10,328 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4147 transitions. Word has length 103 [2020-10-27 05:54:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:10,328 INFO L481 AbstractCegarLoop]: Abstraction has 2674 states and 4147 transitions. [2020-10-27 05:54:10,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4147 transitions. [2020-10-27 05:54:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:54:10,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:10,331 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] [2020-10-27 05:54:10,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:54:10,332 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:10,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1593472274, now seen corresponding path program 1 times [2020-10-27 05:54:10,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:10,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338222223] [2020-10-27 05:54:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-27 05:54:12,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 05:54:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:13,034 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:13,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:13,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:13,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:54:13,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:13,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:54:13,148 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 05:54:13,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338222223] [2020-10-27 05:54:13,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:13,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:13,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658964680] [2020-10-27 05:54:13,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:13,154 INFO L87 Difference]: Start difference. First operand 2674 states and 4147 transitions. Second operand 6 states. [2020-10-27 05:54:13,561 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:54:14,715 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:54:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:15,647 INFO L93 Difference]: Finished difference Result 7526 states and 11771 transitions. [2020-10-27 05:54:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:15,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:15,675 INFO L225 Difference]: With dead ends: 7526 [2020-10-27 05:54:15,675 INFO L226 Difference]: Without dead ends: 4977 [2020-10-27 05:54:15,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:54:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2020-10-27 05:54:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4974. [2020-10-27 05:54:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4974 states. [2020-10-27 05:54:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 7744 transitions. [2020-10-27 05:54:16,043 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 7744 transitions. Word has length 103 [2020-10-27 05:54:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:16,044 INFO L481 AbstractCegarLoop]: Abstraction has 4974 states and 7744 transitions. [2020-10-27 05:54:16,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 7744 transitions. [2020-10-27 05:54:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:54:16,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:16,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:54:16,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:54:16,048 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:16,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1872705057, now seen corresponding path program 1 times [2020-10-27 05:54:16,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:16,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352672335] [2020-10-27 05:54:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:18,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-27 05:54:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:54:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:18,692 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:18,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:18,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:18,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:18,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352672335] [2020-10-27 05:54:18,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:18,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:18,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979217582] [2020-10-27 05:54:18,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:18,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:18,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:18,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:18,766 INFO L87 Difference]: Start difference. First operand 4974 states and 7744 transitions. Second operand 6 states. [2020-10-27 05:54:19,158 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:54:20,350 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:54:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:21,411 INFO L93 Difference]: Finished difference Result 14420 states and 22522 transitions. [2020-10-27 05:54:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:21,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:21,464 INFO L225 Difference]: With dead ends: 14420 [2020-10-27 05:54:21,464 INFO L226 Difference]: Without dead ends: 9541 [2020-10-27 05:54:21,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:54:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2020-10-27 05:54:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 9538. [2020-10-27 05:54:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9538 states. [2020-10-27 05:54:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9538 states to 9538 states and 14816 transitions. [2020-10-27 05:54:22,136 INFO L78 Accepts]: Start accepts. Automaton has 9538 states and 14816 transitions. Word has length 103 [2020-10-27 05:54:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:22,137 INFO L481 AbstractCegarLoop]: Abstraction has 9538 states and 14816 transitions. [2020-10-27 05:54:22,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9538 states and 14816 transitions. [2020-10-27 05:54:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:54:22,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:22,141 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] [2020-10-27 05:54:22,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:54:22,142 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash -361055024, now seen corresponding path program 1 times [2020-10-27 05:54:22,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:22,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969583057] [2020-10-27 05:54:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:54:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:24,854 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:24,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:24,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969583057] [2020-10-27 05:54:24,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:24,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:24,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270320355] [2020-10-27 05:54:24,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:24,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:24,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:24,945 INFO L87 Difference]: Start difference. First operand 9538 states and 14816 transitions. Second operand 6 states. [2020-10-27 05:54:25,320 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:54:26,575 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:54:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:27,867 INFO L93 Difference]: Finished difference Result 28079 states and 43651 transitions. [2020-10-27 05:54:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:27,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:27,932 INFO L225 Difference]: With dead ends: 28079 [2020-10-27 05:54:27,933 INFO L226 Difference]: Without dead ends: 18613 [2020-10-27 05:54:27,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:54:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18613 states. [2020-10-27 05:54:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18613 to 18610. [2020-10-27 05:54:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18610 states. [2020-10-27 05:54:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18610 states to 18610 states and 28753 transitions. [2020-10-27 05:54:29,229 INFO L78 Accepts]: Start accepts. Automaton has 18610 states and 28753 transitions. Word has length 103 [2020-10-27 05:54:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:29,229 INFO L481 AbstractCegarLoop]: Abstraction has 18610 states and 28753 transitions. [2020-10-27 05:54:29,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18610 states and 28753 transitions. [2020-10-27 05:54:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:54:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:29,236 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] [2020-10-27 05:54:29,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:54:29,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1761289153, now seen corresponding path program 1 times [2020-10-27 05:54:29,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:29,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404796617] [2020-10-27 05:54:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:29,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1875 [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:54:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:31,535 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:31,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404796617] [2020-10-27 05:54:31,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:31,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:54:31,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682603382] [2020-10-27 05:54:31,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:54:31,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:54:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:54:31,624 INFO L87 Difference]: Start difference. First operand 18610 states and 28753 transitions. Second operand 6 states. [2020-10-27 05:54:32,069 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:54:33,345 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:54:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:35,398 INFO L93 Difference]: Finished difference Result 55153 states and 85160 transitions. [2020-10-27 05:54:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:54:35,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:54:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:35,487 INFO L225 Difference]: With dead ends: 55153 [2020-10-27 05:54:35,488 INFO L226 Difference]: Without dead ends: 36599 [2020-10-27 05:54:35,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:54:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36599 states. [2020-10-27 05:54:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36599 to 36596. [2020-10-27 05:54:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36596 states. [2020-10-27 05:54:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36596 states to 36596 states and 56111 transitions. [2020-10-27 05:54:37,954 INFO L78 Accepts]: Start accepts. Automaton has 36596 states and 56111 transitions. Word has length 103 [2020-10-27 05:54:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 36596 states and 56111 transitions. [2020-10-27 05:54:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:54:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 36596 states and 56111 transitions. [2020-10-27 05:54:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:54:37,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:37,965 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] [2020-10-27 05:54:37,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:54:37,966 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:37,966 INFO L82 PathProgramCache]: Analyzing trace with hash -850350895, now seen corresponding path program 1 times [2020-10-27 05:54:37,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:37,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845111551] [2020-10-27 05:54:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:54:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:54:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:54:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:54:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:54:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:43,601 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:43,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:43,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:43,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 05:54:43,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:54:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:43,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845111551] [2020-10-27 05:54:43,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:43,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:54:43,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114677155] [2020-10-27 05:54:43,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:54:43,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:54:43,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:54:43,756 INFO L87 Difference]: Start difference. First operand 36596 states and 56111 transitions. Second operand 11 states. [2020-10-27 05:54:44,251 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:54:46,758 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:54:47,297 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:54:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:53,333 INFO L93 Difference]: Finished difference Result 90680 states and 138191 transitions. [2020-10-27 05:54:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:54:53,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:54:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:53,548 INFO L225 Difference]: With dead ends: 90680 [2020-10-27 05:54:53,548 INFO L226 Difference]: Without dead ends: 87179 [2020-10-27 05:54:53,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-10-27 05:54:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87179 states. [2020-10-27 05:54:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87179 to 36596. [2020-10-27 05:54:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36596 states. [2020-10-27 05:54:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36596 states to 36596 states and 56110 transitions. [2020-10-27 05:54:57,240 INFO L78 Accepts]: Start accepts. Automaton has 36596 states and 56110 transitions. Word has length 104 [2020-10-27 05:54:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:57,240 INFO L481 AbstractCegarLoop]: Abstraction has 36596 states and 56110 transitions. [2020-10-27 05:54:57,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:54:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36596 states and 56110 transitions. [2020-10-27 05:54:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:54:57,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:57,253 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] [2020-10-27 05:54:57,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:54:57,253 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1242331023, now seen corresponding path program 1 times [2020-10-27 05:54:57,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:57,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291047674] [2020-10-27 05:54:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:54:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2618 [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:54:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:00,390 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:55:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:55:00,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:55:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:55:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:00,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291047674] [2020-10-27 05:55:00,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:00,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:55:00,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516661456] [2020-10-27 05:55:00,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:55:00,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:55:00,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:55:00,481 INFO L87 Difference]: Start difference. First operand 36596 states and 56110 transitions. Second operand 11 states. [2020-10-27 05:55:01,033 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:55:03,315 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:55:03,871 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:55:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:10,993 INFO L93 Difference]: Finished difference Result 95103 states and 145474 transitions. [2020-10-27 05:55:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:55:10,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:55:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:11,157 INFO L225 Difference]: With dead ends: 95103 [2020-10-27 05:55:11,157 INFO L226 Difference]: Without dead ends: 81884 [2020-10-27 05:55:11,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:55:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81884 states. [2020-10-27 05:55:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81884 to 37109. [2020-10-27 05:55:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37109 states. [2020-10-27 05:55:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37109 states to 37109 states and 56858 transitions. [2020-10-27 05:55:14,657 INFO L78 Accepts]: Start accepts. Automaton has 37109 states and 56858 transitions. Word has length 104 [2020-10-27 05:55:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:14,657 INFO L481 AbstractCegarLoop]: Abstraction has 37109 states and 56858 transitions. [2020-10-27 05:55:14,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:55:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37109 states and 56858 transitions. [2020-10-27 05:55:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:55:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:14,670 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] [2020-10-27 05:55:14,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:55:14,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:14,671 INFO L82 PathProgramCache]: Analyzing trace with hash 557982737, now seen corresponding path program 1 times [2020-10-27 05:55:14,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:14,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238338692] [2020-10-27 05:55:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:18,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:55:18,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:55:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-10-27 05:55:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:55:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:55:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:55:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:19,282 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:55:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:19,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:55:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:19,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238338692] [2020-10-27 05:55:19,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:19,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:55:19,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532867046] [2020-10-27 05:55:19,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:55:19,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:55:19,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:55:19,374 INFO L87 Difference]: Start difference. First operand 37109 states and 56858 transitions. Second operand 11 states. [2020-10-27 05:55:19,827 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:55:22,889 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:55:23,404 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:55:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:34,334 INFO L93 Difference]: Finished difference Result 138357 states and 210492 transitions. [2020-10-27 05:55:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:55:34,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:55:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:34,545 INFO L225 Difference]: With dead ends: 138357 [2020-10-27 05:55:34,545 INFO L226 Difference]: Without dead ends: 121954 [2020-10-27 05:55:34,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:55:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121954 states. [2020-10-27 05:55:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121954 to 37619. [2020-10-27 05:55:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37619 states. [2020-10-27 05:55:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37619 states to 37619 states and 57568 transitions. [2020-10-27 05:55:39,058 INFO L78 Accepts]: Start accepts. Automaton has 37619 states and 57568 transitions. Word has length 104 [2020-10-27 05:55:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:39,058 INFO L481 AbstractCegarLoop]: Abstraction has 37619 states and 57568 transitions. [2020-10-27 05:55:39,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:55:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37619 states and 57568 transitions. [2020-10-27 05:55:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:55:39,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:39,069 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] [2020-10-27 05:55:39,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:55:39,070 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash 261390257, now seen corresponding path program 1 times [2020-10-27 05:55:39,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:39,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300726745] [2020-10-27 05:55:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:55:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 05:55:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:43,280 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:55:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:55:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:55:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:43,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300726745] [2020-10-27 05:55:43,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:43,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:55:43,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508300722] [2020-10-27 05:55:43,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:55:43,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:55:43,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:55:43,356 INFO L87 Difference]: Start difference. First operand 37619 states and 57568 transitions. Second operand 11 states. [2020-10-27 05:55:43,823 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:55:47,197 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:55:47,719 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:56:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:02,583 INFO L93 Difference]: Finished difference Result 175278 states and 267681 transitions. [2020-10-27 05:56:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:56:02,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:56:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:02,817 INFO L225 Difference]: With dead ends: 175278 [2020-10-27 05:56:02,817 INFO L226 Difference]: Without dead ends: 149819 [2020-10-27 05:56:03,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:56:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149819 states. [2020-10-27 05:56:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149819 to 38204. [2020-10-27 05:56:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38204 states. [2020-10-27 05:56:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38204 states to 38204 states and 58363 transitions. [2020-10-27 05:56:08,204 INFO L78 Accepts]: Start accepts. Automaton has 38204 states and 58363 transitions. Word has length 104 [2020-10-27 05:56:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:08,204 INFO L481 AbstractCegarLoop]: Abstraction has 38204 states and 58363 transitions. [2020-10-27 05:56:08,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:56:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 38204 states and 58363 transitions. [2020-10-27 05:56:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:56:08,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:08,213 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] [2020-10-27 05:56:08,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:56:08,213 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1186817199, now seen corresponding path program 1 times [2020-10-27 05:56:08,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:08,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001666604] [2020-10-27 05:56:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:56:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:56:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:56:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:11,553 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:11,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:11,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:11,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:11,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:56:11,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:56:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:56:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:11,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001666604] [2020-10-27 05:56:11,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:11,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:56:11,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605948785] [2020-10-27 05:56:11,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:56:11,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:56:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:56:11,613 INFO L87 Difference]: Start difference. First operand 38204 states and 58363 transitions. Second operand 11 states. [2020-10-27 05:56:12,082 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:56:15,376 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:56:15,999 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:56:28,915 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:35,696 INFO L93 Difference]: Finished difference Result 199289 states and 306166 transitions. [2020-10-27 05:56:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:56:35,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:56:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:36,122 INFO L225 Difference]: With dead ends: 199289 [2020-10-27 05:56:36,122 INFO L226 Difference]: Without dead ends: 168156 [2020-10-27 05:56:36,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:56:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168156 states. [2020-10-27 05:56:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168156 to 38859. [2020-10-27 05:56:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38859 states. [2020-10-27 05:56:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38859 states to 38859 states and 59217 transitions. [2020-10-27 05:56:41,769 INFO L78 Accepts]: Start accepts. Automaton has 38859 states and 59217 transitions. Word has length 104 [2020-10-27 05:56:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:41,769 INFO L481 AbstractCegarLoop]: Abstraction has 38859 states and 59217 transitions. [2020-10-27 05:56:41,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:56:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 38859 states and 59217 transitions. [2020-10-27 05:56:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:56:41,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:41,780 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] [2020-10-27 05:56:41,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:56:41,780 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1901824271, now seen corresponding path program 1 times [2020-10-27 05:56:41,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:41,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357129577] [2020-10-27 05:56:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:45,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4007 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:56:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 05:56:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:46,351 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:46,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:56:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:56:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:46,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357129577] [2020-10-27 05:56:46,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:46,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:56:46,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068457221] [2020-10-27 05:56:46,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:56:46,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:46,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:56:46,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:56:46,418 INFO L87 Difference]: Start difference. First operand 38859 states and 59217 transitions. Second operand 11 states. [2020-10-27 05:56:46,874 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:56:51,011 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:56:51,424 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:57:14,144 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:16,078 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 15