/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:30:51,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:30:51,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:30:51,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:30:51,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:30:51,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:30:51,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:30:51,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:30:51,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:30:51,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:30:51,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:30:51,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:30:51,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:30:51,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:30:51,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:30:51,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:30:51,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:30:51,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:30:51,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:30:51,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:30:51,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:30:51,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:30:51,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:30:51,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:30:51,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:30:51,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:30:51,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:30:51,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:30:51,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:30:51,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:30:51,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:30:51,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:30:51,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:30:51,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:30:51,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:30:51,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:30:51,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:30:51,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:30:51,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:30:51,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:30:51,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:30:51,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:30:51,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:30:51,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:30:51,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:30:51,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:30:51,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:30:51,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:30:51,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:30:51,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:30:51,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:30:51,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:30:51,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:30:51,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:30:51,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:30:51,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:30:51,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:30:51,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:30:51,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:30:51,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:30:51,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:30:51,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:30:51,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:30:51,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:30:51,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:30:51,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:30:51,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:30:51,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:30:51,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:30:51,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:30:51,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:30:51,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:30:52,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:30:52,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:30:52,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:30:52,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:30:52,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:30:52,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:30:52,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63caa39a7/8ff205aba97f4035b4baf89cd9b3f5b1/FLAGce54848e7 [2020-10-27 23:30:52,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:30:52,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:30:52,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63caa39a7/8ff205aba97f4035b4baf89cd9b3f5b1/FLAGce54848e7 [2020-10-27 23:30:53,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63caa39a7/8ff205aba97f4035b4baf89cd9b3f5b1 [2020-10-27 23:30:53,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:30:53,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:30:53,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:30:53,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:30:53,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:30:53,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669fab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53, skipping insertion in model container [2020-10-27 23:30:53,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:30:53,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:30:53,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:30:53,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:30:53,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:30:53,900 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:30:53,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53 WrapperNode [2020-10-27 23:30:53,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:30:53,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:30:53,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:30:53,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:30:53,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:53,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:54,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... [2020-10-27 23:30:54,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:30:54,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:30:54,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:30:54,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:30:54,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:30:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:30:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:30:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:30:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:30:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:30:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:30:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:30:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:30:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:30:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:30:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:30:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:30:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:30:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:30:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:30:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:30:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:30:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:30:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:30:55,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:30:55,768 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:30:55,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:30:55 BoogieIcfgContainer [2020-10-27 23:30:55,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:30:55,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:30:55,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:30:55,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:30:55,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:30:53" (1/3) ... [2020-10-27 23:30:55,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce4d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:30:55, skipping insertion in model container [2020-10-27 23:30:55,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:53" (2/3) ... [2020-10-27 23:30:55,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce4d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:30:55, skipping insertion in model container [2020-10-27 23:30:55,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:30:55" (3/3) ... [2020-10-27 23:30:55,781 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:30:55,795 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:30:55,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:30:55,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:30:55,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:30:55,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:30:55,850 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:30:55,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:30:55,850 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:30:55,850 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:30:55,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:30:55,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:30:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 23:30:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 23:30:55,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:55,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:30:55,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 23:30:55,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:55,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983100617] [2020-10-27 23:30:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:01,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 23:31:01,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:31:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:31:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:31:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 23:31:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:31:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:31:02,127 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:02,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:31:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:02,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983100617] [2020-10-27 23:31:02,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:02,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:31:02,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749161148] [2020-10-27 23:31:02,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:31:02,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:31:02,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:31:02,280 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 7 states. [2020-10-27 23:31:02,961 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:31:05,816 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:06,282 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:31:06,695 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:31:07,288 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:31:07,784 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:08,243 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:31:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:08,353 INFO L93 Difference]: Finished difference Result 1435 states and 2446 transitions. [2020-10-27 23:31:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:31:08,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-27 23:31:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:08,387 INFO L225 Difference]: With dead ends: 1435 [2020-10-27 23:31:08,388 INFO L226 Difference]: Without dead ends: 1273 [2020-10-27 23:31:08,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:31:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-27 23:31:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 460. [2020-10-27 23:31:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-27 23:31:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 765 transitions. [2020-10-27 23:31:08,546 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 765 transitions. Word has length 115 [2020-10-27 23:31:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:08,547 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 765 transitions. [2020-10-27 23:31:08,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:31:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 765 transitions. [2020-10-27 23:31:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 23:31:08,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:08,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:08,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:31:08,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash -907521539, now seen corresponding path program 1 times [2020-10-27 23:31:08,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:08,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470158934] [2020-10-27 23:31:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:31:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:31:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 23:31:13,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:31:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:31:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:31:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:14,246 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:14,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:14,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:31:14,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:14,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470158934] [2020-10-27 23:31:14,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:14,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:31:14,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754295771] [2020-10-27 23:31:14,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:31:14,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:14,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:31:14,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:31:14,326 INFO L87 Difference]: Start difference. First operand 460 states and 765 transitions. Second operand 8 states. [2020-10-27 23:31:14,905 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:31:17,446 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:17,928 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:31:18,484 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:31:19,001 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:31:19,536 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:31:20,022 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:31:20,534 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:31:21,525 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:31:22,062 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:31:22,858 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:31:23,307 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:23,335 INFO L93 Difference]: Finished difference Result 3284 states and 5514 transitions. [2020-10-27 23:31:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:31:23,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-27 23:31:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:23,353 INFO L225 Difference]: With dead ends: 3284 [2020-10-27 23:31:23,353 INFO L226 Difference]: Without dead ends: 3017 [2020-10-27 23:31:23,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-27 23:31:23,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-27 23:31:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1180. [2020-10-27 23:31:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-10-27 23:31:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1980 transitions. [2020-10-27 23:31:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1980 transitions. Word has length 116 [2020-10-27 23:31:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:23,479 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1980 transitions. [2020-10-27 23:31:23,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:31:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1980 transitions. [2020-10-27 23:31:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 23:31:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:23,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:23,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:31:23,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash 20745321, now seen corresponding path program 1 times [2020-10-27 23:31:23,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:23,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156044972] [2020-10-27 23:31:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:28,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:31:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:31:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:31:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:31:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:31:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:29,248 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:29,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:31:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:29,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156044972] [2020-10-27 23:31:29,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:29,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474234107] [2020-10-27 23:31:29,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:29,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:29,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:29,342 INFO L87 Difference]: Start difference. First operand 1180 states and 1980 transitions. Second operand 5 states. [2020-10-27 23:31:29,826 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:32,144 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:31:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:32,322 INFO L93 Difference]: Finished difference Result 3891 states and 6554 transitions. [2020-10-27 23:31:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:31:32,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 23:31:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:32,344 INFO L225 Difference]: With dead ends: 3891 [2020-10-27 23:31:32,344 INFO L226 Difference]: Without dead ends: 3001 [2020-10-27 23:31:32,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:31:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-27 23:31:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2101. [2020-10-27 23:31:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-27 23:31:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3532 transitions. [2020-10-27 23:31:32,542 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3532 transitions. Word has length 117 [2020-10-27 23:31:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:32,542 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 3532 transitions. [2020-10-27 23:31:32,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3532 transitions. [2020-10-27 23:31:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 23:31:32,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:32,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:32,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:31:32,546 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1126454378, now seen corresponding path program 1 times [2020-10-27 23:31:32,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:32,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615560696] [2020-10-27 23:31:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 23:31:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:31:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:31:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 23:31:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:31:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:31:38,152 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:38,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:38,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:31:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:38,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615560696] [2020-10-27 23:31:38,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:38,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:38,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74004613] [2020-10-27 23:31:38,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:38,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:38,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:38,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:38,273 INFO L87 Difference]: Start difference. First operand 2101 states and 3532 transitions. Second operand 5 states. [2020-10-27 23:31:38,731 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:40,959 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:31:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:41,236 INFO L93 Difference]: Finished difference Result 7435 states and 12522 transitions. [2020-10-27 23:31:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:31:41,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 23:31:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:41,268 INFO L225 Difference]: With dead ends: 7435 [2020-10-27 23:31:41,269 INFO L226 Difference]: Without dead ends: 5665 [2020-10-27 23:31:41,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:31:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2020-10-27 23:31:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 3878. [2020-10-27 23:31:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-10-27 23:31:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6520 transitions. [2020-10-27 23:31:41,607 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6520 transitions. Word has length 118 [2020-10-27 23:31:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:41,607 INFO L481 AbstractCegarLoop]: Abstraction has 3878 states and 6520 transitions. [2020-10-27 23:31:41,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6520 transitions. [2020-10-27 23:31:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 23:31:41,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:41,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:41,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:31:41,614 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2106359330, now seen corresponding path program 1 times [2020-10-27 23:31:41,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:41,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834418752] [2020-10-27 23:31:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:31:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:31:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:47,193 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:47,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:47,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:47,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:31:47,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:47,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834418752] [2020-10-27 23:31:47,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:47,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:47,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494596439] [2020-10-27 23:31:47,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:47,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:47,278 INFO L87 Difference]: Start difference. First operand 3878 states and 6520 transitions. Second operand 5 states. [2020-10-27 23:31:47,752 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:31:49,898 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:31:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:50,340 INFO L93 Difference]: Finished difference Result 14447 states and 24298 transitions. [2020-10-27 23:31:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:31:50,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 23:31:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:50,400 INFO L225 Difference]: With dead ends: 14447 [2020-10-27 23:31:50,400 INFO L226 Difference]: Without dead ends: 10924 [2020-10-27 23:31:50,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:31:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2020-10-27 23:31:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 7370. [2020-10-27 23:31:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7370 states. [2020-10-27 23:31:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 12372 transitions. [2020-10-27 23:31:51,092 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 12372 transitions. Word has length 119 [2020-10-27 23:31:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:51,093 INFO L481 AbstractCegarLoop]: Abstraction has 7370 states and 12372 transitions. [2020-10-27 23:31:51,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 12372 transitions. [2020-10-27 23:31:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:31:51,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:51,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:51,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:31:51,097 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1656484632, now seen corresponding path program 1 times [2020-10-27 23:31:51,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:51,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507326871] [2020-10-27 23:31:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:56,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:31:56,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:31:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:31:56,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 23:31:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:31:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:56,669 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:31:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:56,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:56,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507326871] [2020-10-27 23:31:56,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:56,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:56,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386299101] [2020-10-27 23:31:56,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:56,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:56,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:56,738 INFO L87 Difference]: Start difference. First operand 7370 states and 12372 transitions. Second operand 4 states. [2020-10-27 23:31:57,227 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:32:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:00,138 INFO L93 Difference]: Finished difference Result 19882 states and 33394 transitions. [2020-10-27 23:32:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:00,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:32:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:00,176 INFO L225 Difference]: With dead ends: 19882 [2020-10-27 23:32:00,176 INFO L226 Difference]: Without dead ends: 12799 [2020-10-27 23:32:00,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2020-10-27 23:32:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12796. [2020-10-27 23:32:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12796 states. [2020-10-27 23:32:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 21430 transitions. [2020-10-27 23:32:01,147 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 21430 transitions. Word has length 121 [2020-10-27 23:32:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:01,147 INFO L481 AbstractCegarLoop]: Abstraction has 12796 states and 21430 transitions. [2020-10-27 23:32:01,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 21430 transitions. [2020-10-27 23:32:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:32:01,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:01,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:01,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:32:01,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1818638548, now seen corresponding path program 1 times [2020-10-27 23:32:01,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:01,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963997599] [2020-10-27 23:32:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 23:32:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:32:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:06,664 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:32:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:06,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963997599] [2020-10-27 23:32:06,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:06,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:32:06,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640006731] [2020-10-27 23:32:06,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:32:06,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:32:06,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:06,726 INFO L87 Difference]: Start difference. First operand 12796 states and 21430 transitions. Second operand 4 states. [2020-10-27 23:32:07,214 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:32:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:10,178 INFO L93 Difference]: Finished difference Result 34690 states and 58122 transitions. [2020-10-27 23:32:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:10,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:32:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:10,232 INFO L225 Difference]: With dead ends: 34690 [2020-10-27 23:32:10,232 INFO L226 Difference]: Without dead ends: 22183 [2020-10-27 23:32:10,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:10,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22183 states. [2020-10-27 23:32:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22183 to 22123. [2020-10-27 23:32:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22123 states. [2020-10-27 23:32:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22123 states to 22123 states and 36959 transitions. [2020-10-27 23:32:11,732 INFO L78 Accepts]: Start accepts. Automaton has 22123 states and 36959 transitions. Word has length 121 [2020-10-27 23:32:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:11,733 INFO L481 AbstractCegarLoop]: Abstraction has 22123 states and 36959 transitions. [2020-10-27 23:32:11,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22123 states and 36959 transitions. [2020-10-27 23:32:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:32:11,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:11,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:11,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:32:11,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:11,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1977188974, now seen corresponding path program 1 times [2020-10-27 23:32:11,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:11,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602601486] [2020-10-27 23:32:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:16,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4463 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:32:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:16,725 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:32:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:16,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602601486] [2020-10-27 23:32:16,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:16,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:32:16,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548183804] [2020-10-27 23:32:16,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:32:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:16,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:32:16,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:16,773 INFO L87 Difference]: Start difference. First operand 22123 states and 36959 transitions. Second operand 4 states. [2020-10-27 23:32:18,741 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:32:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:21,129 INFO L93 Difference]: Finished difference Result 59806 states and 99450 transitions. [2020-10-27 23:32:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:21,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:32:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:21,208 INFO L225 Difference]: With dead ends: 59806 [2020-10-27 23:32:21,208 INFO L226 Difference]: Without dead ends: 37915 [2020-10-27 23:32:21,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37915 states. [2020-10-27 23:32:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37915 to 37463. [2020-10-27 23:32:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37463 states. [2020-10-27 23:32:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37463 states to 37463 states and 61589 transitions. [2020-10-27 23:32:24,418 INFO L78 Accepts]: Start accepts. Automaton has 37463 states and 61589 transitions. Word has length 121 [2020-10-27 23:32:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:24,418 INFO L481 AbstractCegarLoop]: Abstraction has 37463 states and 61589 transitions. [2020-10-27 23:32:24,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 37463 states and 61589 transitions. [2020-10-27 23:32:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:32:24,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:24,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:24,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:32:24,421 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2065168613, now seen corresponding path program 1 times [2020-10-27 23:32:24,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:24,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719723062] [2020-10-27 23:32:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:32:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:32:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:32:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:32:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 23:32:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:32:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:30,034 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:32:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:30,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719723062] [2020-10-27 23:32:30,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:30,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:32:30,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791810125] [2020-10-27 23:32:30,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:32:30,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:30,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:32:30,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:30,076 INFO L87 Difference]: Start difference. First operand 37463 states and 61589 transitions. Second operand 5 states. [2020-10-27 23:32:32,373 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:32:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:37,322 INFO L93 Difference]: Finished difference Result 105423 states and 173243 transitions. [2020-10-27 23:32:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:32:37,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:32:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:37,465 INFO L225 Difference]: With dead ends: 105423 [2020-10-27 23:32:37,465 INFO L226 Difference]: Without dead ends: 68202 [2020-10-27 23:32:37,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:32:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68202 states. [2020-10-27 23:32:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68202 to 67287. [2020-10-27 23:32:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67287 states. [2020-10-27 23:32:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67287 states to 67287 states and 109781 transitions. [2020-10-27 23:32:42,561 INFO L78 Accepts]: Start accepts. Automaton has 67287 states and 109781 transitions. Word has length 121 [2020-10-27 23:32:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:42,561 INFO L481 AbstractCegarLoop]: Abstraction has 67287 states and 109781 transitions. [2020-10-27 23:32:42,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:32:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 67287 states and 109781 transitions. [2020-10-27 23:32:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:32:42,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:42,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:42,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:32:42,574 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:42,575 INFO L82 PathProgramCache]: Analyzing trace with hash -755430332, now seen corresponding path program 1 times [2020-10-27 23:32:42,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:42,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196180822] [2020-10-27 23:32:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:32:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:48,103 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:32:48,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:48,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196180822] [2020-10-27 23:32:48,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:48,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:32:48,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533140121] [2020-10-27 23:32:48,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:32:48,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:48,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:32:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:48,145 INFO L87 Difference]: Start difference. First operand 67287 states and 109781 transitions. Second operand 4 states. [2020-10-27 23:32:48,620 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:32:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:58,588 INFO L93 Difference]: Finished difference Result 184125 states and 300313 transitions. [2020-10-27 23:32:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:58,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:32:58,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:58,800 INFO L225 Difference]: With dead ends: 184125 [2020-10-27 23:32:58,800 INFO L226 Difference]: Without dead ends: 117062 [2020-10-27 23:32:58,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117062 states. [2020-10-27 23:33:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117062 to 117028. [2020-10-27 23:33:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117028 states. [2020-10-27 23:33:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117028 states to 117028 states and 189947 transitions. [2020-10-27 23:33:07,715 INFO L78 Accepts]: Start accepts. Automaton has 117028 states and 189947 transitions. Word has length 121 [2020-10-27 23:33:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:33:07,715 INFO L481 AbstractCegarLoop]: Abstraction has 117028 states and 189947 transitions. [2020-10-27 23:33:07,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:33:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 117028 states and 189947 transitions. [2020-10-27 23:33:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:33:07,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:07,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:07,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:33:07,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1676286493, now seen corresponding path program 1 times [2020-10-27 23:33:07,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:07,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575272829] [2020-10-27 23:33:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:33:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:13,279 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:33:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:13,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:33:13,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:13,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575272829] [2020-10-27 23:33:13,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:13,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:33:13,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582493306] [2020-10-27 23:33:13,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:33:13,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:33:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:33:13,339 INFO L87 Difference]: Start difference. First operand 117028 states and 189947 transitions. Second operand 5 states. [2020-10-27 23:33:15,595 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:33:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:33:30,938 INFO L93 Difference]: Finished difference Result 334122 states and 542127 transitions. [2020-10-27 23:33:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:33:30,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:33:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:33:31,521 INFO L225 Difference]: With dead ends: 334122 [2020-10-27 23:33:31,522 INFO L226 Difference]: Without dead ends: 217287 [2020-10-27 23:33:31,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:33:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217287 states. [2020-10-27 23:33:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217287 to 124708. [2020-10-27 23:33:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124708 states. [2020-10-27 23:33:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124708 states to 124708 states and 203003 transitions. [2020-10-27 23:33:41,938 INFO L78 Accepts]: Start accepts. Automaton has 124708 states and 203003 transitions. Word has length 121 [2020-10-27 23:33:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:33:41,939 INFO L481 AbstractCegarLoop]: Abstraction has 124708 states and 203003 transitions. [2020-10-27 23:33:41,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:33:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 124708 states and 203003 transitions. [2020-10-27 23:33:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:33:41,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:41,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:41,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:33:41,941 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:41,942 INFO L82 PathProgramCache]: Analyzing trace with hash 985898902, now seen corresponding path program 1 times [2020-10-27 23:33:41,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:41,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668639906] [2020-10-27 23:33:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 23:33:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:33:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:47,785 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:33:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:47,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:47,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:33:47,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:47,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668639906] [2020-10-27 23:33:47,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:47,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:33:47,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989955995] [2020-10-27 23:33:47,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:33:47,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:47,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:33:47,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:33:47,833 INFO L87 Difference]: Start difference. First operand 124708 states and 203003 transitions. Second operand 4 states. [2020-10-27 23:33:48,362 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:06,631 INFO L93 Difference]: Finished difference Result 339178 states and 551807 transitions. [2020-10-27 23:34:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:06,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:34:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:07,067 INFO L225 Difference]: With dead ends: 339178 [2020-10-27 23:34:07,068 INFO L226 Difference]: Without dead ends: 214663 [2020-10-27 23:34:07,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214663 states. [2020-10-27 23:34:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214663 to 214660. [2020-10-27 23:34:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214660 states. [2020-10-27 23:34:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214660 states to 214660 states and 347323 transitions. [2020-10-27 23:34:24,779 INFO L78 Accepts]: Start accepts. Automaton has 214660 states and 347323 transitions. Word has length 121 [2020-10-27 23:34:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:24,779 INFO L481 AbstractCegarLoop]: Abstraction has 214660 states and 347323 transitions. [2020-10-27 23:34:24,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 214660 states and 347323 transitions. [2020-10-27 23:34:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 23:34:24,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:24,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:24,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:34:24,781 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -990900028, now seen corresponding path program 1 times [2020-10-27 23:34:24,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:24,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934699957] [2020-10-27 23:34:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking...