/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:52:02,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:52:02,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:52:02,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:52:02,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:52:02,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:52:02,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:52:02,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:52:02,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:52:02,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:52:02,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:52:02,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:52:02,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:52:02,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:52:02,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:52:02,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:52:02,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:52:02,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:52:02,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:52:02,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:52:02,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:52:02,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:52:02,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:52:02,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:52:02,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:52:02,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:52:02,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:52:02,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:52:02,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:52:02,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:52:02,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:52:02,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:52:02,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:52:02,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:52:02,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:52:02,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:52:02,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:52:02,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:52:02,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:52:02,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:52:02,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:52:02,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:52:02,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:52:02,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:52:02,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:52:02,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:52:02,749 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:52:02,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:52:02,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:52:02,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:52:02,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:52:02,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:52:02,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:52:02,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:52:02,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:52:02,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:52:02,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:52:02,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:52:02,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:52:02,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:52:02,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:52:02,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:52:02,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:52:02,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:52:02,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:52:02,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:52:02,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:52:02,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:52:02,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:52:02,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:52:02,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:52:02,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:52:03,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:52:03,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:52:03,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:52:03,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:52:03,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:52:03,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:52:03,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bda9b80b/91f56a698d0d41a8b3f4528d99c6daa9/FLAG9e03c3d94 [2020-10-27 23:52:04,134 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:52:04,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:52:04,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bda9b80b/91f56a698d0d41a8b3f4528d99c6daa9/FLAG9e03c3d94 [2020-10-27 23:52:04,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bda9b80b/91f56a698d0d41a8b3f4528d99c6daa9 [2020-10-27 23:52:04,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:52:04,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:52:04,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:04,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:52:04,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:52:04,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:04" (1/1) ... [2020-10-27 23:52:04,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b9a78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:04, skipping insertion in model container [2020-10-27 23:52:04,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:04" (1/1) ... [2020-10-27 23:52:04,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:52:04,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:52:05,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:05,308 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:52:05,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:05,668 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:52:05,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05 WrapperNode [2020-10-27 23:52:05,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:05,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:52:05,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:52:05,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:52:05,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... [2020-10-27 23:52:05,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:52:05,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:52:05,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:52:05,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:52:05,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:52:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:52:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:52:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:52:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:52:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:52:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:52:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:52:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:52:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:52:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:52:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:52:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:52:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:52:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:52:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:52:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:52:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:52:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:52:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:52:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:52:08,646 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:52:08,647 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:52:08,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:08 BoogieIcfgContainer [2020-10-27 23:52:08,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:52:08,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:52:08,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:52:08,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:52:08,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:52:04" (1/3) ... [2020-10-27 23:52:08,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:08, skipping insertion in model container [2020-10-27 23:52:08,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:05" (2/3) ... [2020-10-27 23:52:08,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:08, skipping insertion in model container [2020-10-27 23:52:08,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:08" (3/3) ... [2020-10-27 23:52:08,671 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:52:08,684 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:52:08,690 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:52:08,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:52:08,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:52:08,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:52:08,755 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:52:08,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:52:08,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:52:08,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:52:08,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:52:08,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:52:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2020-10-27 23:52:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 23:52:08,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:08,823 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] [2020-10-27 23:52:08,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:08,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1232942352, now seen corresponding path program 1 times [2020-10-27 23:52:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:08,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315536940] [2020-10-27 23:52:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:11,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:14,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:14,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 23:52:14,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:52:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:52:14,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:52:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:52:14,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:52:15,309 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:15,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:52:15,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:15,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315536940] [2020-10-27 23:52:15,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:15,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:15,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140603815] [2020-10-27 23:52:15,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:15,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:15,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:15,418 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 7 states. [2020-10-27 23:52:16,328 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:23,783 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:24,818 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:25,900 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:26,804 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:28,691 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:29,545 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:30,639 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:30,725 INFO L93 Difference]: Finished difference Result 1990 states and 3396 transitions. [2020-10-27 23:52:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:30,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-27 23:52:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:30,796 INFO L225 Difference]: With dead ends: 1990 [2020-10-27 23:52:30,796 INFO L226 Difference]: Without dead ends: 1582 [2020-10-27 23:52:30,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2020-10-27 23:52:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 970. [2020-10-27 23:52:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-27 23:52:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1321 transitions. [2020-10-27 23:52:30,972 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1321 transitions. Word has length 76 [2020-10-27 23:52:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:30,973 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1321 transitions. [2020-10-27 23:52:30,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1321 transitions. [2020-10-27 23:52:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:52:30,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:30,979 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] [2020-10-27 23:52:30,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:52:30,980 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1758932965, now seen corresponding path program 1 times [2020-10-27 23:52:30,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:30,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818038264] [2020-10-27 23:52:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:52:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:52:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:52:36,877 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:52:36,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818038264] [2020-10-27 23:52:36,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:36,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:36,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169916660] [2020-10-27 23:52:36,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:36,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:36,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:36,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:36,956 INFO L87 Difference]: Start difference. First operand 970 states and 1321 transitions. Second operand 7 states. [2020-10-27 23:52:37,849 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:42,069 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:43,070 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:44,056 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:44,922 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:46,562 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:47,398 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:48,440 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:48,490 INFO L93 Difference]: Finished difference Result 2863 states and 4094 transitions. [2020-10-27 23:52:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:48,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:52:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:48,512 INFO L225 Difference]: With dead ends: 2863 [2020-10-27 23:52:48,512 INFO L226 Difference]: Without dead ends: 2318 [2020-10-27 23:52:48,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-10-27 23:52:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1218. [2020-10-27 23:52:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-10-27 23:52:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1700 transitions. [2020-10-27 23:52:48,591 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1700 transitions. Word has length 77 [2020-10-27 23:52:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:48,591 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1700 transitions. [2020-10-27 23:52:48,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1700 transitions. [2020-10-27 23:52:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:52:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:48,595 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] [2020-10-27 23:52:48,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:52:48,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1601373387, now seen corresponding path program 1 times [2020-10-27 23:52:48,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:48,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322275090] [2020-10-27 23:52:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:48,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:50,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:53,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:52:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 23:52:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:54,524 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:54,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:54,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322275090] [2020-10-27 23:52:54,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:54,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:52:54,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753637278] [2020-10-27 23:52:54,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:52:54,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:52:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:52:54,590 INFO L87 Difference]: Start difference. First operand 1218 states and 1700 transitions. Second operand 6 states. [2020-10-27 23:52:55,484 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:59,871 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:01,158 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:02,848 INFO L93 Difference]: Finished difference Result 3211 states and 4657 transitions. [2020-10-27 23:53:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:53:02,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-27 23:53:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:02,878 INFO L225 Difference]: With dead ends: 3211 [2020-10-27 23:53:02,878 INFO L226 Difference]: Without dead ends: 3031 [2020-10-27 23:53:02,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:53:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2020-10-27 23:53:02,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2012. [2020-10-27 23:53:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2012 states. [2020-10-27 23:53:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2885 transitions. [2020-10-27 23:53:02,999 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2885 transitions. Word has length 77 [2020-10-27 23:53:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:02,999 INFO L481 AbstractCegarLoop]: Abstraction has 2012 states and 2885 transitions. [2020-10-27 23:53:02,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:53:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2885 transitions. [2020-10-27 23:53:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:53:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:03,003 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] [2020-10-27 23:53:03,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:53:03,004 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1835102600, now seen corresponding path program 1 times [2020-10-27 23:53:03,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:03,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571657277] [2020-10-27 23:53:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:08,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:53:08,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:53:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:08,996 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:09,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:09,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:09,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571657277] [2020-10-27 23:53:09,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:09,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801334997] [2020-10-27 23:53:09,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:09,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:09,072 INFO L87 Difference]: Start difference. First operand 2012 states and 2885 transitions. Second operand 7 states. [2020-10-27 23:53:09,955 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:14,949 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:15,923 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:16,964 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:17,867 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:19,728 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:20,562 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:21,609 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:21,660 INFO L93 Difference]: Finished difference Result 5224 states and 7655 transitions. [2020-10-27 23:53:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:21,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:53:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:21,682 INFO L225 Difference]: With dead ends: 5224 [2020-10-27 23:53:21,682 INFO L226 Difference]: Without dead ends: 4278 [2020-10-27 23:53:21,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2020-10-27 23:53:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 3036. [2020-10-27 23:53:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3036 states. [2020-10-27 23:53:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4412 transitions. [2020-10-27 23:53:21,870 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4412 transitions. Word has length 77 [2020-10-27 23:53:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:21,871 INFO L481 AbstractCegarLoop]: Abstraction has 3036 states and 4412 transitions. [2020-10-27 23:53:21,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4412 transitions. [2020-10-27 23:53:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:53:21,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:21,876 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] [2020-10-27 23:53:21,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:53:21,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1693403688, now seen corresponding path program 1 times [2020-10-27 23:53:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:21,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924423431] [2020-10-27 23:53:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:53:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:53:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:27,881 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:27,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924423431] [2020-10-27 23:53:27,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:27,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:27,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157250342] [2020-10-27 23:53:27,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:27,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:27,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:27,948 INFO L87 Difference]: Start difference. First operand 3036 states and 4412 transitions. Second operand 7 states. [2020-10-27 23:53:28,878 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:32,674 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:33,632 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:34,633 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:35,506 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:37,362 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:38,219 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:39,377 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:39,469 INFO L93 Difference]: Finished difference Result 9738 states and 14578 transitions. [2020-10-27 23:53:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:39,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:53:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:39,509 INFO L225 Difference]: With dead ends: 9738 [2020-10-27 23:53:39,509 INFO L226 Difference]: Without dead ends: 8135 [2020-10-27 23:53:39,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2020-10-27 23:53:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 3437. [2020-10-27 23:53:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-27 23:53:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5019 transitions. [2020-10-27 23:53:39,807 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5019 transitions. Word has length 78 [2020-10-27 23:53:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:39,807 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5019 transitions. [2020-10-27 23:53:39,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5019 transitions. [2020-10-27 23:53:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:53:39,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:39,821 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] [2020-10-27 23:53:39,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:53:39,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:39,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1535844110, now seen corresponding path program 1 times [2020-10-27 23:53:39,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:39,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946982155] [2020-10-27 23:53:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:53:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:53:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:45,813 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:45,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946982155] [2020-10-27 23:53:45,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:45,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:45,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838867379] [2020-10-27 23:53:45,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:45,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:45,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:45,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:45,864 INFO L87 Difference]: Start difference. First operand 3437 states and 5019 transitions. Second operand 7 states. [2020-10-27 23:53:46,778 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:50,698 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:51,685 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:52,744 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:53,598 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:55,386 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:56,240 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:57,424 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:57,506 INFO L93 Difference]: Finished difference Result 9892 states and 14813 transitions. [2020-10-27 23:53:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:57,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:53:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:57,543 INFO L225 Difference]: With dead ends: 9892 [2020-10-27 23:53:57,543 INFO L226 Difference]: Without dead ends: 8277 [2020-10-27 23:53:57,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2020-10-27 23:53:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 3860. [2020-10-27 23:53:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-10-27 23:53:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5657 transitions. [2020-10-27 23:53:57,858 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5657 transitions. Word has length 78 [2020-10-27 23:53:57,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:57,859 INFO L481 AbstractCegarLoop]: Abstraction has 3860 states and 5657 transitions. [2020-10-27 23:53:57,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5657 transitions. [2020-10-27 23:53:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:53:57,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:57,867 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] [2020-10-27 23:53:57,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:53:57,867 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:57,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1043115387, now seen corresponding path program 1 times [2020-10-27 23:53:57,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:57,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178437620] [2020-10-27 23:53:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:02,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:02,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:54:02,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:54:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:03,883 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:03,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178437620] [2020-10-27 23:54:03,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:03,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:03,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239006869] [2020-10-27 23:54:03,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:03,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:03,927 INFO L87 Difference]: Start difference. First operand 3860 states and 5657 transitions. Second operand 7 states. [2020-10-27 23:54:04,859 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:08,439 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:54:09,391 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:10,416 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:11,259 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:13,225 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:14,082 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:54:15,175 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:54:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:15,219 INFO L93 Difference]: Finished difference Result 9878 states and 14717 transitions. [2020-10-27 23:54:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:54:15,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:54:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:15,238 INFO L225 Difference]: With dead ends: 9878 [2020-10-27 23:54:15,238 INFO L226 Difference]: Without dead ends: 8170 [2020-10-27 23:54:15,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:54:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states. [2020-10-27 23:54:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 5496. [2020-10-27 23:54:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5496 states. [2020-10-27 23:54:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 8081 transitions. [2020-10-27 23:54:15,723 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 8081 transitions. Word has length 78 [2020-10-27 23:54:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:15,723 INFO L481 AbstractCegarLoop]: Abstraction has 5496 states and 8081 transitions. [2020-10-27 23:54:15,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:54:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 8081 transitions. [2020-10-27 23:54:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:54:15,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:15,732 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] [2020-10-27 23:54:15,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:54:15,732 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1031714907, now seen corresponding path program 1 times [2020-10-27 23:54:15,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:15,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192571072] [2020-10-27 23:54:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:16,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 23:54:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:21,816 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:21,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:21,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:21,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:21,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:54:21,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:21,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192571072] [2020-10-27 23:54:21,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:21,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:54:21,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492836676] [2020-10-27 23:54:21,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:54:21,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:21,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:54:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:54:21,884 INFO L87 Difference]: Start difference. First operand 5496 states and 8081 transitions. Second operand 10 states. [2020-10-27 23:54:22,784 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 23:54:27,710 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-27 23:54:28,758 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 23:54:29,958 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 23:54:30,888 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:54:31,783 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:54:32,595 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:33,833 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:37,349 INFO L93 Difference]: Finished difference Result 41478 states and 62831 transitions. [2020-10-27 23:54:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 23:54:37,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-27 23:54:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:37,425 INFO L225 Difference]: With dead ends: 41478 [2020-10-27 23:54:37,425 INFO L226 Difference]: Without dead ends: 38499 [2020-10-27 23:54:37,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 23:54:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38499 states. [2020-10-27 23:54:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38499 to 13663. [2020-10-27 23:54:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13663 states. [2020-10-27 23:54:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13663 states to 13663 states and 20391 transitions. [2020-10-27 23:54:38,588 INFO L78 Accepts]: Start accepts. Automaton has 13663 states and 20391 transitions. Word has length 79 [2020-10-27 23:54:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:38,588 INFO L481 AbstractCegarLoop]: Abstraction has 13663 states and 20391 transitions. [2020-10-27 23:54:38,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:54:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13663 states and 20391 transitions. [2020-10-27 23:54:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:54:38,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:38,601 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] [2020-10-27 23:54:38,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:54:38,601 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:38,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash -173223598, now seen corresponding path program 1 times [2020-10-27 23:54:38,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:38,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394086056] [2020-10-27 23:54:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:54:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:54:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:54:43,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:54:44,450 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:44,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:44,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394086056] [2020-10-27 23:54:44,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:54:44,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692933769] [2020-10-27 23:54:44,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:54:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:44,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:54:44,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:54:44,502 INFO L87 Difference]: Start difference. First operand 13663 states and 20391 transitions. Second operand 6 states. [2020-10-27 23:54:45,403 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:49,940 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:51,433 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:56,054 INFO L93 Difference]: Finished difference Result 59648 states and 91047 transitions. [2020-10-27 23:54:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:54:56,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-27 23:54:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:56,151 INFO L225 Difference]: With dead ends: 59648 [2020-10-27 23:54:56,151 INFO L226 Difference]: Without dead ends: 50470 [2020-10-27 23:54:56,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:54:56,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50470 states. [2020-10-27 23:54:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50470 to 27209. [2020-10-27 23:54:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27209 states. [2020-10-27 23:54:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27209 states to 27209 states and 41157 transitions. [2020-10-27 23:54:58,772 INFO L78 Accepts]: Start accepts. Automaton has 27209 states and 41157 transitions. Word has length 79 [2020-10-27 23:54:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:58,772 INFO L481 AbstractCegarLoop]: Abstraction has 27209 states and 41157 transitions. [2020-10-27 23:54:58,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:54:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27209 states and 41157 transitions. [2020-10-27 23:54:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:54:58,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:58,784 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] [2020-10-27 23:54:58,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:54:58,784 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:58,785 INFO L82 PathProgramCache]: Analyzing trace with hash -875480329, now seen corresponding path program 1 times [2020-10-27 23:54:58,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:58,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034677804] [2020-10-27 23:54:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 23:55:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:04,695 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:55:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:04,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:55:04,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:04,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034677804] [2020-10-27 23:55:04,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:04,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:55:04,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092792696] [2020-10-27 23:55:04,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:55:04,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:55:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:55:04,735 INFO L87 Difference]: Start difference. First operand 27209 states and 41157 transitions. Second operand 6 states. [2020-10-27 23:55:05,608 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:55:09,774 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:55:11,080 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:55:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:20,717 INFO L93 Difference]: Finished difference Result 125231 states and 193012 transitions. [2020-10-27 23:55:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:55:20,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-27 23:55:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:20,972 INFO L225 Difference]: With dead ends: 125231 [2020-10-27 23:55:20,972 INFO L226 Difference]: Without dead ends: 109731 [2020-10-27 23:55:21,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:55:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109731 states. [2020-10-27 23:55:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109731 to 49352. [2020-10-27 23:55:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49352 states. [2020-10-27 23:55:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49352 states to 49352 states and 75204 transitions. [2020-10-27 23:55:26,052 INFO L78 Accepts]: Start accepts. Automaton has 49352 states and 75204 transitions. Word has length 79 [2020-10-27 23:55:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:26,053 INFO L481 AbstractCegarLoop]: Abstraction has 49352 states and 75204 transitions. [2020-10-27 23:55:26,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:55:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 49352 states and 75204 transitions. [2020-10-27 23:55:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:55:26,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:26,064 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] [2020-10-27 23:55:26,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:55:26,065 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1201169640, now seen corresponding path program 1 times [2020-10-27 23:55:26,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:26,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542749882] [2020-10-27 23:55:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:55:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:55:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:55:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:32,158 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:55:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:32,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:32,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:32,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:55:32,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542749882] [2020-10-27 23:55:32,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:32,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:55:32,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383294499] [2020-10-27 23:55:32,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:55:32,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:32,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:55:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:55:32,219 INFO L87 Difference]: Start difference. First operand 49352 states and 75204 transitions. Second operand 10 states. [2020-10-27 23:55:34,270 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 370 DAG size of output: 365 [2020-10-27 23:55:38,528 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 334