/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-10-29 13:24:14,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:24:14,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:24:14,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:24:14,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:24:14,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:24:14,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:24:14,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:24:14,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:24:14,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:24:14,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:24:14,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:24:14,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:24:14,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:24:14,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:24:14,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:24:14,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:24:14,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:24:14,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:24:14,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:24:14,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:24:14,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:24:14,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:24:14,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:24:14,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:24:14,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:24:14,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:24:14,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:24:14,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:24:14,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:24:14,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:24:14,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:24:14,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:24:14,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:24:14,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:24:14,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:24:14,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:24:14,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:24:14,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:24:14,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:24:14,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:24:14,640 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 [2020-10-29 13:24:14,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:24:14,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:24:14,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:24:14,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:24:14,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:24:14,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:24:14,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:24:14,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:24:14,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:24:14,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:24:14,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:24:14,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:24:14,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:24:14,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:24:14,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:24:14,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:24:14,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:24:14,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:24:14,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:24:14,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:24:14,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:24:14,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:24:14,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:24:14,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:24:14,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:24:14,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:24:14,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:24:14,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:24:14,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:24:14,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:24:15,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:24:15,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:24:15,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:24:15,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:24:15,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:24:15,189 INFO L432 ainManager$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 [2020-10-29 13:24:15,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4e6eb7d/9574956273d14691b8e6845a84501a37/FLAG1fffdd881 [2020-10-29 13:24:16,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:24:16,203 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 [2020-10-29 13:24:16,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4e6eb7d/9574956273d14691b8e6845a84501a37/FLAG1fffdd881 [2020-10-29 13:24:16,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4e6eb7d/9574956273d14691b8e6845a84501a37 [2020-10-29 13:24:16,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:24:16,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:24:16,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:24:16,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:24:16,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:24:16,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:24:16" (1/1) ... [2020-10-29 13:24:16,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65261001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:16, skipping insertion in model container [2020-10-29 13:24:16,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:24:16" (1/1) ... [2020-10-29 13:24:16,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:24:16,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:24:17,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:24:17,431 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:24:17,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:24:17,731 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:24:17,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17 WrapperNode [2020-10-29 13:24:17,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:24:17,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:24:17,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:24:17,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:24:17,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (1/1) ... [2020-10-29 13:24:17,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:24:17,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:24:17,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:24:17,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:24:17,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (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 [2020-10-29 13:24:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:24:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:24:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:24:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:24:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:24:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:24:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:24:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:24:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:24:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:24:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:24:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:24:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:24:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:24:20,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:24:20,770 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:24:20,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:24:20 BoogieIcfgContainer [2020-10-29 13:24:20,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:24:20,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:24:20,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:24:20,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:24:20,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:24:16" (1/3) ... [2020-10-29 13:24:20,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96bf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:24:20, skipping insertion in model container [2020-10-29 13:24:20,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:24:17" (2/3) ... [2020-10-29 13:24:20,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96bf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:24:20, skipping insertion in model container [2020-10-29 13:24:20,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:24:20" (3/3) ... [2020-10-29 13:24:20,784 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:24:20,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:24:20,806 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:24:20,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:24:20,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:24:20,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:24:20,864 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:24:20,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:24:20,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:24:20,865 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:24:20,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:24:20,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:24:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2020-10-29 13:24:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 13:24:20,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:20,937 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] [2020-10-29 13:24:20,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1232942352, now seen corresponding path program 1 times [2020-10-29 13:24:20,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:20,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585225566] [2020-10-29 13:24:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:26,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:26,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 13:24:26,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:24:26,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:24:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:26,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:24:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:24:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 13:24:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:24:27,493 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:27,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:27,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 13:24:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:27,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:24:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:24:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:24:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:27,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585225566] [2020-10-29 13:24:27,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:27,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:24:27,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256443412] [2020-10-29 13:24:27,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:24:27,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:27,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:24:27,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:24:27,671 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 6 states. [2020-10-29 13:24:28,610 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:24:33,629 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:24:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:34,205 INFO L93 Difference]: Finished difference Result 1168 states and 2054 transitions. [2020-10-29 13:24:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:24:34,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-29 13:24:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:34,230 INFO L225 Difference]: With dead ends: 1168 [2020-10-29 13:24:34,231 INFO L226 Difference]: Without dead ends: 690 [2020-10-29 13:24:34,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:24:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-29 13:24:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 655. [2020-10-29 13:24:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-10-29 13:24:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 888 transitions. [2020-10-29 13:24:34,379 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 888 transitions. Word has length 76 [2020-10-29 13:24:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:34,380 INFO L481 AbstractCegarLoop]: Abstraction has 655 states and 888 transitions. [2020-10-29 13:24:34,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:24:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 888 transitions. [2020-10-29 13:24:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 13:24:34,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:34,397 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] [2020-10-29 13:24:34,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:24:34,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 2101656801, now seen corresponding path program 1 times [2020-10-29 13:24:34,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:34,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635141563] [2020-10-29 13:24:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:39,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 13:24:39,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:24:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:24:39,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:39,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:24:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:24:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 13:24:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:24:40,360 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:40,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 13:24:40,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:40,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:24:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:24:40,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:24:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:40,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635141563] [2020-10-29 13:24:40,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:40,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:24:40,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139241246] [2020-10-29 13:24:40,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:24:40,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:40,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:24:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:24:40,486 INFO L87 Difference]: Start difference. First operand 655 states and 888 transitions. Second operand 6 states. [2020-10-29 13:24:41,379 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:24:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:44,107 INFO L93 Difference]: Finished difference Result 1141 states and 1592 transitions. [2020-10-29 13:24:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:24:44,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-29 13:24:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:44,115 INFO L225 Difference]: With dead ends: 1141 [2020-10-29 13:24:44,116 INFO L226 Difference]: Without dead ends: 603 [2020-10-29 13:24:44,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:24:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-29 13:24:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2020-10-29 13:24:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-29 13:24:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 826 transitions. [2020-10-29 13:24:44,162 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 826 transitions. Word has length 77 [2020-10-29 13:24:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:44,162 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 826 transitions. [2020-10-29 13:24:44,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:24:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 826 transitions. [2020-10-29 13:24:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:24:44,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:44,165 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] [2020-10-29 13:24:44,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:24:44,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1535844110, now seen corresponding path program 1 times [2020-10-29 13:24:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:44,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26341337] [2020-10-29 13:24:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:49,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:24:49,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:24:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:24:49,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:49,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:24:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:24:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 13:24:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:24:50,282 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:50,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 13:24:50,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:50,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:24:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:24:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:24:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:50,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26341337] [2020-10-29 13:24:50,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:50,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:24:50,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961063661] [2020-10-29 13:24:50,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:24:50,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:24:50,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:24:50,424 INFO L87 Difference]: Start difference. First operand 603 states and 826 transitions. Second operand 6 states. [2020-10-29 13:24:51,350 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:24:54,540 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:24:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:55,069 INFO L93 Difference]: Finished difference Result 1388 states and 1954 transitions. [2020-10-29 13:24:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:24:55,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-29 13:24:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:55,083 INFO L225 Difference]: With dead ends: 1388 [2020-10-29 13:24:55,085 INFO L226 Difference]: Without dead ends: 870 [2020-10-29 13:24:55,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:24:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-29 13:24:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 819. [2020-10-29 13:24:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-29 13:24:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1161 transitions. [2020-10-29 13:24:55,159 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1161 transitions. Word has length 78 [2020-10-29 13:24:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:55,162 INFO L481 AbstractCegarLoop]: Abstraction has 819 states and 1161 transitions. [2020-10-29 13:24:55,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:24:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1161 transitions. [2020-10-29 13:24:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 13:24:55,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:55,167 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] [2020-10-29 13:24:55,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:24:55,167 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash -874155329, now seen corresponding path program 1 times [2020-10-29 13:24:55,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:55,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604747266] [2020-10-29 13:24:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:00,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 13:25:00,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:25:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:25:00,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:00,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:25:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:25:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:25:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:25:01,164 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 13:25:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:01,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:25:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:25:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:01,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604747266] [2020-10-29 13:25:01,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:01,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:25:01,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106862832] [2020-10-29 13:25:01,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:25:01,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:01,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:25:01,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:25:01,273 INFO L87 Difference]: Start difference. First operand 819 states and 1161 transitions. Second operand 6 states. [2020-10-29 13:25:02,146 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:25:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:04,648 INFO L93 Difference]: Finished difference Result 1553 states and 2234 transitions. [2020-10-29 13:25:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:25:04,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 13:25:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:04,658 INFO L225 Difference]: With dead ends: 1553 [2020-10-29 13:25:04,658 INFO L226 Difference]: Without dead ends: 809 [2020-10-29 13:25:04,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:25:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-29 13:25:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2020-10-29 13:25:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-29 13:25:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1145 transitions. [2020-10-29 13:25:04,719 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1145 transitions. Word has length 79 [2020-10-29 13:25:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:04,722 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1145 transitions. [2020-10-29 13:25:04,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:25:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1145 transitions. [2020-10-29 13:25:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:25:04,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:04,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:04,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:25:04,725 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash -411999060, now seen corresponding path program 1 times [2020-10-29 13:25:04,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:04,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557829896] [2020-10-29 13:25:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:25:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:25:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:25:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:10,828 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:10,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:10,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:10,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:25:10,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:10,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:10,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557829896] [2020-10-29 13:25:10,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:10,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:25:10,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156925483] [2020-10-29 13:25:10,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:25:10,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:25:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:25:10,901 INFO L87 Difference]: Start difference. First operand 809 states and 1145 transitions. Second operand 6 states. [2020-10-29 13:25:11,732 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-29 13:25:15,911 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-29 13:25:17,326 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-29 13:25:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:19,072 INFO L93 Difference]: Finished difference Result 4262 states and 6238 transitions. [2020-10-29 13:25:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:25:19,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:25:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:19,094 INFO L225 Difference]: With dead ends: 4262 [2020-10-29 13:25:19,094 INFO L226 Difference]: Without dead ends: 3786 [2020-10-29 13:25:19,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:25:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-10-29 13:25:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2155. [2020-10-29 13:25:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:25:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3166 transitions. [2020-10-29 13:25:19,278 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3166 transitions. Word has length 80 [2020-10-29 13:25:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:19,278 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3166 transitions. [2020-10-29 13:25:19,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:25:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3166 transitions. [2020-10-29 13:25:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:25:19,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:19,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:19,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:25:19,282 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:19,282 INFO L82 PathProgramCache]: Analyzing trace with hash -255764482, now seen corresponding path program 1 times [2020-10-29 13:25:19,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:19,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894945728] [2020-10-29 13:25:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:24,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:24,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:25:24,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:25:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:25:24,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:24,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:25:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:25:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:25,312 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:25:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:25,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:25,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894945728] [2020-10-29 13:25:25,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:25,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:25:25,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343693688] [2020-10-29 13:25:25,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:25:25,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:25,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:25:25,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:25:25,379 INFO L87 Difference]: Start difference. First operand 2155 states and 3166 transitions. Second operand 7 states. [2020-10-29 13:25:26,288 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-29 13:25:29,178 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:25:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:30,075 INFO L93 Difference]: Finished difference Result 4801 states and 7057 transitions. [2020-10-29 13:25:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:25:30,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-29 13:25:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:30,095 INFO L225 Difference]: With dead ends: 4801 [2020-10-29 13:25:30,095 INFO L226 Difference]: Without dead ends: 3372 [2020-10-29 13:25:30,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:25:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-10-29 13:25:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 2155. [2020-10-29 13:25:30,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:25:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3164 transitions. [2020-10-29 13:25:30,280 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3164 transitions. Word has length 80 [2020-10-29 13:25:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:30,282 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3164 transitions. [2020-10-29 13:25:30,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:25:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3164 transitions. [2020-10-29 13:25:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:25:30,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:30,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:30,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:25:30,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:30,286 INFO L82 PathProgramCache]: Analyzing trace with hash -104688078, now seen corresponding path program 1 times [2020-10-29 13:25:30,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:30,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214202231] [2020-10-29 13:25:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:35,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:35,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:35,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:25:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:36,365 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:25:36,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:36,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:36,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214202231] [2020-10-29 13:25:36,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:36,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:25:36,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221488314] [2020-10-29 13:25:36,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:25:36,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:36,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:25:36,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:25:36,428 INFO L87 Difference]: Start difference. First operand 2155 states and 3164 transitions. Second operand 8 states. [2020-10-29 13:25:37,340 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:25:40,569 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:25:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:42,070 INFO L93 Difference]: Finished difference Result 5571 states and 8266 transitions. [2020-10-29 13:25:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:25:42,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:25:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:42,099 INFO L225 Difference]: With dead ends: 5571 [2020-10-29 13:25:42,099 INFO L226 Difference]: Without dead ends: 5565 [2020-10-29 13:25:42,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:25:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2020-10-29 13:25:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 2155. [2020-10-29 13:25:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:25:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3162 transitions. [2020-10-29 13:25:42,338 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3162 transitions. Word has length 81 [2020-10-29 13:25:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:42,338 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3162 transitions. [2020-10-29 13:25:42,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:25:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3162 transitions. [2020-10-29 13:25:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:25:42,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:42,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:42,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:25:42,342 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:42,343 INFO L82 PathProgramCache]: Analyzing trace with hash 753803231, now seen corresponding path program 1 times [2020-10-29 13:25:42,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:42,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107982207] [2020-10-29 13:25:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:44,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:25:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:25:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:25:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:47,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:25:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:25:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:48,376 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:48,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107982207] [2020-10-29 13:25:48,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:48,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:25:48,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480015431] [2020-10-29 13:25:48,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:25:48,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:48,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:25:48,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:25:48,429 INFO L87 Difference]: Start difference. First operand 2155 states and 3162 transitions. Second operand 8 states. [2020-10-29 13:25:49,403 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:25:52,586 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:25:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:54,113 INFO L93 Difference]: Finished difference Result 6547 states and 9760 transitions. [2020-10-29 13:25:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:25:54,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:25:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:54,140 INFO L225 Difference]: With dead ends: 6547 [2020-10-29 13:25:54,140 INFO L226 Difference]: Without dead ends: 5565 [2020-10-29 13:25:54,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:25:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2020-10-29 13:25:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 2155. [2020-10-29 13:25:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:25:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3160 transitions. [2020-10-29 13:25:54,392 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3160 transitions. Word has length 81 [2020-10-29 13:25:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:54,393 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3160 transitions. [2020-10-29 13:25:54,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:25:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3160 transitions. [2020-10-29 13:25:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:25:54,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:54,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:54,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:25:54,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:54,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1361489502, now seen corresponding path program 1 times [2020-10-29 13:25:54,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:54,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359602397] [2020-10-29 13:25:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:25:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:25:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:00,303 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:26:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:00,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:00,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:26:00,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:00,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:00,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359602397] [2020-10-29 13:26:00,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:00,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:26:00,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322618681] [2020-10-29 13:26:00,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:00,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:00,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:00,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:00,368 INFO L87 Difference]: Start difference. First operand 2155 states and 3160 transitions. Second operand 8 states. [2020-10-29 13:26:01,293 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:26:04,464 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:26:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:06,054 INFO L93 Difference]: Finished difference Result 5204 states and 7789 transitions. [2020-10-29 13:26:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:06,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:26:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:06,075 INFO L225 Difference]: With dead ends: 5204 [2020-10-29 13:26:06,075 INFO L226 Difference]: Without dead ends: 4176 [2020-10-29 13:26:06,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:26:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2020-10-29 13:26:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2155. [2020-10-29 13:26:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:26:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3158 transitions. [2020-10-29 13:26:06,318 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3158 transitions. Word has length 81 [2020-10-29 13:26:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:06,318 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3158 transitions. [2020-10-29 13:26:06,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3158 transitions. [2020-10-29 13:26:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:26:06,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:06,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:06,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:26:06,322 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:06,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1295532612, now seen corresponding path program 1 times [2020-10-29 13:26:06,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:06,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371248058] [2020-10-29 13:26:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:10,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:26:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:12,248 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:26:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:12,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:12,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:12,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:12,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371248058] [2020-10-29 13:26:12,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:12,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:26:12,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534486413] [2020-10-29 13:26:12,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:12,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:12,296 INFO L87 Difference]: Start difference. First operand 2155 states and 3158 transitions. Second operand 8 states. [2020-10-29 13:26:13,173 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:26:16,004 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:26:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:17,520 INFO L93 Difference]: Finished difference Result 6565 states and 9778 transitions. [2020-10-29 13:26:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:17,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:26:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:17,536 INFO L225 Difference]: With dead ends: 6565 [2020-10-29 13:26:17,536 INFO L226 Difference]: Without dead ends: 5565 [2020-10-29 13:26:17,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:26:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2020-10-29 13:26:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 2155. [2020-10-29 13:26:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:26:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3150 transitions. [2020-10-29 13:26:17,789 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3150 transitions. Word has length 82 [2020-10-29 13:26:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:17,790 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3150 transitions. [2020-10-29 13:26:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3150 transitions. [2020-10-29 13:26:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:26:17,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:17,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:17,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:26:17,814 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1621221923, now seen corresponding path program 1 times [2020-10-29 13:26:17,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:17,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203181896] [2020-10-29 13:26:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:22,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:26:22,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:26:22,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:26:22,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:22,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:26:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:23,754 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:26:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:23,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203181896] [2020-10-29 13:26:23,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:23,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:26:23,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49042824] [2020-10-29 13:26:23,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:23,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:23,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:23,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:23,814 INFO L87 Difference]: Start difference. First operand 2155 states and 3150 transitions. Second operand 8 states. [2020-10-29 13:26:24,696 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:26:27,631 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:26:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:29,155 INFO L93 Difference]: Finished difference Result 5231 states and 7819 transitions. [2020-10-29 13:26:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:29,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:26:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:29,166 INFO L225 Difference]: With dead ends: 5231 [2020-10-29 13:26:29,166 INFO L226 Difference]: Without dead ends: 4192 [2020-10-29 13:26:29,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:26:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2020-10-29 13:26:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 2155. [2020-10-29 13:26:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:26:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3142 transitions. [2020-10-29 13:26:29,387 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3142 transitions. Word has length 82 [2020-10-29 13:26:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:29,388 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3142 transitions. [2020-10-29 13:26:29,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3142 transitions. [2020-10-29 13:26:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:26:29,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:29,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:29,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:26:29,391 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash -729114882, now seen corresponding path program 1 times [2020-10-29 13:26:29,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:29,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254783101] [2020-10-29 13:26:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:34,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:34,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:34,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:34,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:26:34,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:35,306 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:26:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:35,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:35,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254783101] [2020-10-29 13:26:35,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:35,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:26:35,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211936750] [2020-10-29 13:26:35,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:35,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:35,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:35,362 INFO L87 Difference]: Start difference. First operand 2155 states and 3142 transitions. Second operand 8 states. [2020-10-29 13:26:36,234 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:26:39,191 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:26:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:40,928 INFO L93 Difference]: Finished difference Result 5356 states and 7981 transitions. [2020-10-29 13:26:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:40,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:26:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:40,938 INFO L225 Difference]: With dead ends: 5356 [2020-10-29 13:26:40,938 INFO L226 Difference]: Without dead ends: 4176 [2020-10-29 13:26:40,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:26:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2020-10-29 13:26:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2155. [2020-10-29 13:26:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-29 13:26:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3134 transitions. [2020-10-29 13:26:41,147 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3134 transitions. Word has length 82 [2020-10-29 13:26:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:41,147 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 3134 transitions. [2020-10-29 13:26:41,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3134 transitions. [2020-10-29 13:26:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:26:41,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:41,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:41,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:26:41,151 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:41,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1804268850, now seen corresponding path program 1 times [2020-10-29 13:26:41,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:41,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542732146] [2020-10-29 13:26:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:46,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:26:46,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 13:26:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 13:26:46,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:26:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:26:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:47,078 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:26:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:47,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:47,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:47,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:47,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:26:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:26:47,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542732146] [2020-10-29 13:26:47,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:47,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:26:47,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989767660] [2020-10-29 13:26:47,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:47,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:47,154 INFO L87 Difference]: Start difference. First operand 2155 states and 3134 transitions. Second operand 8 states. [2020-10-29 13:26:48,014 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-29 13:26:51,010 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:26:53,805 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:26:54,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:54,501 INFO L93 Difference]: Finished difference Result 8697 states and 12969 transitions. [2020-10-29 13:26:54,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:26:54,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:26:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:54,516 INFO L225 Difference]: With dead ends: 8697 [2020-10-29 13:26:54,516 INFO L226 Difference]: Without dead ends: 7274 [2020-10-29 13:26:54,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:26:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-29 13:26:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 1899. [2020-10-29 13:26:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-29 13:26:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2750 transitions. [2020-10-29 13:26:54,854 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2750 transitions. Word has length 82 [2020-10-29 13:26:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:54,854 INFO L481 AbstractCegarLoop]: Abstraction has 1899 states and 2750 transitions. [2020-10-29 13:26:54,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2750 transitions. [2020-10-29 13:26:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 13:26:54,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:54,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:26:54,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:26:54,858 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash 584758044, now seen corresponding path program 1 times [2020-10-29 13:26:54,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:54,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253809536] [2020-10-29 13:26:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:59,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:26:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:00,811 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:27:00,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:00,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253809536] [2020-10-29 13:27:00,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:00,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:27:00,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328977583] [2020-10-29 13:27:00,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:27:00,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:00,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:27:00,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:27:00,864 INFO L87 Difference]: Start difference. First operand 1899 states and 2750 transitions. Second operand 8 states. [2020-10-29 13:27:01,730 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:27:03,850 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:27:04,707 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-29 13:27:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:05,490 INFO L93 Difference]: Finished difference Result 3979 states and 5850 transitions. [2020-10-29 13:27:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:27:05,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-29 13:27:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:05,496 INFO L225 Difference]: With dead ends: 3979 [2020-10-29 13:27:05,497 INFO L226 Difference]: Without dead ends: 2783 [2020-10-29 13:27:05,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:27:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-10-29 13:27:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1670. [2020-10-29 13:27:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-29 13:27:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2423 transitions. [2020-10-29 13:27:05,819 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2423 transitions. Word has length 83 [2020-10-29 13:27:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:05,819 INFO L481 AbstractCegarLoop]: Abstraction has 1670 states and 2423 transitions. [2020-10-29 13:27:05,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:27:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2423 transitions. [2020-10-29 13:27:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 13:27:05,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:05,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:05,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:27:05,823 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash 777379128, now seen corresponding path program 1 times [2020-10-29 13:27:05,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:05,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264679512] [2020-10-29 13:27:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:27:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:27:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 13:27:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:11,807 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:27:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:27:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:11,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:11,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264679512] [2020-10-29 13:27:11,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:11,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:27:11,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199781217] [2020-10-29 13:27:11,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:27:11,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:11,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:27:11,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:27:11,876 INFO L87 Difference]: Start difference. First operand 1670 states and 2423 transitions. Second operand 8 states. [2020-10-29 13:27:12,763 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:27:15,048 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:27:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:16,637 INFO L93 Difference]: Finished difference Result 4661 states and 6945 transitions. [2020-10-29 13:27:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:27:16,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-29 13:27:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:16,647 INFO L225 Difference]: With dead ends: 4661 [2020-10-29 13:27:16,647 INFO L226 Difference]: Without dead ends: 3677 [2020-10-29 13:27:16,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:27:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2020-10-29 13:27:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1670. [2020-10-29 13:27:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-29 13:27:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2421 transitions. [2020-10-29 13:27:16,947 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2421 transitions. Word has length 83 [2020-10-29 13:27:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:16,947 INFO L481 AbstractCegarLoop]: Abstraction has 1670 states and 2421 transitions. [2020-10-29 13:27:16,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:27:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2421 transitions. [2020-10-29 13:27:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 13:27:16,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:16,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:16,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:27:16,950 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1876465940, now seen corresponding path program 1 times [2020-10-29 13:27:16,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:16,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894103150] [2020-10-29 13:27:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:21,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 13:27:21,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:27:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:22,876 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:27:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:22,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:22,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894103150] [2020-10-29 13:27:22,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:22,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:27:22,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068772395] [2020-10-29 13:27:22,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:27:22,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:27:22,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:27:22,924 INFO L87 Difference]: Start difference. First operand 1670 states and 2421 transitions. Second operand 8 states. [2020-10-29 13:27:23,799 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:27:25,797 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:27:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:27,348 INFO L93 Difference]: Finished difference Result 4673 states and 6961 transitions. [2020-10-29 13:27:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:27:27,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-29 13:27:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:27,357 INFO L225 Difference]: With dead ends: 4673 [2020-10-29 13:27:27,358 INFO L226 Difference]: Without dead ends: 3665 [2020-10-29 13:27:27,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:27:27,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-29 13:27:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 1670. [2020-10-29 13:27:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-29 13:27:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2419 transitions. [2020-10-29 13:27:27,671 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2419 transitions. Word has length 83 [2020-10-29 13:27:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:27,672 INFO L481 AbstractCegarLoop]: Abstraction has 1670 states and 2419 transitions. [2020-10-29 13:27:27,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:27:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2419 transitions. [2020-10-29 13:27:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:27:27,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:27,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:27,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:27:27,675 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:27,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1019739614, now seen corresponding path program 1 times [2020-10-29 13:27:27,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:27,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067355541] [2020-10-29 13:27:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 13:27:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:27:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:27:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:33,804 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:27:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:33,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067355541] [2020-10-29 13:27:33,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:33,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:27:33,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254613982] [2020-10-29 13:27:33,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:27:33,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:27:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:33,871 INFO L87 Difference]: Start difference. First operand 1670 states and 2419 transitions. Second operand 9 states. [2020-10-29 13:27:34,754 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:27:36,997 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:27:37,879 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:27:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:38,707 INFO L93 Difference]: Finished difference Result 3843 states and 5669 transitions. [2020-10-29 13:27:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:27:38,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-29 13:27:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:38,711 INFO L225 Difference]: With dead ends: 3843 [2020-10-29 13:27:38,711 INFO L226 Difference]: Without dead ends: 2863 [2020-10-29 13:27:38,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:27:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-10-29 13:27:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1627. [2020-10-29 13:27:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-10-29 13:27:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2354 transitions. [2020-10-29 13:27:38,966 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2354 transitions. Word has length 84 [2020-10-29 13:27:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:38,966 INFO L481 AbstractCegarLoop]: Abstraction has 1627 states and 2354 transitions. [2020-10-29 13:27:38,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:27:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2354 transitions. [2020-10-29 13:27:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:27:38,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:38,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:38,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:27:38,968 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash 304960216, now seen corresponding path program 1 times [2020-10-29 13:27:38,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:38,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160647689] [2020-10-29 13:27:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:44,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:27:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:27:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 13:27:44,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:45,104 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:27:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:27:45,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160647689] [2020-10-29 13:27:45,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:45,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:27:45,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770863965] [2020-10-29 13:27:45,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:27:45,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:27:45,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:45,185 INFO L87 Difference]: Start difference. First operand 1627 states and 2354 transitions. Second operand 9 states. [2020-10-29 13:27:46,950 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2020-10-29 13:27:49,440 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2020-10-29 13:27:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:50,503 INFO L93 Difference]: Finished difference Result 3117 states and 4607 transitions. [2020-10-29 13:27:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:27:50,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-29 13:27:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:50,506 INFO L225 Difference]: With dead ends: 3117 [2020-10-29 13:27:50,506 INFO L226 Difference]: Without dead ends: 2095 [2020-10-29 13:27:50,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:27:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states.