/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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:36:26,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:36:26,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:36:26,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:36:26,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:36:26,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:36:26,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:36:26,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:36:26,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:36:26,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:36:26,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:36:26,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:36:26,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:36:26,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:36:26,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:36:26,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:36:26,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:36:26,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:36:26,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:36:26,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:36:26,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:36:26,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:36:26,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:36:26,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:36:26,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:36:26,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:36:26,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:36:26,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:36:26,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:36:26,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:36:26,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:36:26,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:36:26,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:36:26,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:36:26,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:36:26,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:36:26,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:36:26,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:36:26,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:36:26,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:36:26,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:36:26,208 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 23:36:26,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:36:26,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:36:26,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:36:26,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:36:26,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:36:26,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:36:26,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:36:26,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:36:26,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:36:26,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:36:26,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:36:26,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:36:26,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:36:26,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:36:26,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:36:26,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:36:26,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:36:26,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:36:26,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:36:26,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:36:26,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:36:26,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:36:26,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:36:26,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:36:26,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:36:26,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:36:26,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:36:26,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:36:26,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:36:26,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:36:26,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:36:26,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:36:26,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:36:26,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:36:26,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:36:26,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:36:26,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8934afb/df98a6ef83fd450f86754eb1488bcd02/FLAG4cc84ff1b [2020-10-27 23:36:27,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:36:27,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:36:27,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8934afb/df98a6ef83fd450f86754eb1488bcd02/FLAG4cc84ff1b [2020-10-27 23:36:27,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8934afb/df98a6ef83fd450f86754eb1488bcd02 [2020-10-27 23:36:27,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:36:27,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:36:27,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:36:27,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:36:27,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:36:27,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:36:27" (1/1) ... [2020-10-27 23:36:27,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25448dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:27, skipping insertion in model container [2020-10-27 23:36:27,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:36:27" (1/1) ... [2020-10-27 23:36:27,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:36:28,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:36:28,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:36:28,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:36:29,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:36:29,146 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:36:29,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29 WrapperNode [2020-10-27 23:36:29,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:36:29,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:36:29,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:36:29,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:36:29,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (1/1) ... [2020-10-27 23:36:29,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:36:29,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:36:29,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:36:29,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:36:29,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (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 23:36:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:36:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:36:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:36:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:36:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:36:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:36:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:36:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:36:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:36:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:36:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:36:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:36:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:36:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:36:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:36:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:36:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:36:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:36:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:36:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:36:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:36:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:36:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:36:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:36:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:36:31,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:36:31,618 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:36:31,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:36:31 BoogieIcfgContainer [2020-10-27 23:36:31,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:36:31,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:36:31,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:36:31,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:36:31,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:36:27" (1/3) ... [2020-10-27 23:36:31,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4c3153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:36:31, skipping insertion in model container [2020-10-27 23:36:31,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:36:29" (2/3) ... [2020-10-27 23:36:31,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4c3153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:36:31, skipping insertion in model container [2020-10-27 23:36:31,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:36:31" (3/3) ... [2020-10-27 23:36:31,631 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:36:31,643 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:36:31,649 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:36:31,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:36:31,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:36:31,695 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:36:31,695 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:36:31,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:36:31,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:36:31,696 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:36:31,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:36:31,696 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:36:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-27 23:36:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 23:36:31,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:31,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:31,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-27 23:36:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:31,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534958461] [2020-10-27 23:36:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 23:36:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:36:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:36:37,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:36:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 23:36:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:36:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:36:38,656 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:36:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 23:36:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:38,891 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 23:36:38,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534958461] [2020-10-27 23:36:38,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:38,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:36:38,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293892564] [2020-10-27 23:36:38,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:36:38,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:38,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:36:38,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:36:38,920 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 8 states. [2020-10-27 23:36:39,921 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 407 [2020-10-27 23:36:47,214 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:36:48,147 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:36:49,121 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:36:49,956 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:36:51,098 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:36:52,104 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:36:53,033 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:36:53,913 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:36:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:54,188 INFO L93 Difference]: Finished difference Result 2695 states and 4671 transitions. [2020-10-27 23:36:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 23:36:54,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2020-10-27 23:36:54,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:54,232 INFO L225 Difference]: With dead ends: 2695 [2020-10-27 23:36:54,233 INFO L226 Difference]: Without dead ends: 2457 [2020-10-27 23:36:54,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:36:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-10-27 23:36:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 926. [2020-10-27 23:36:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-10-27 23:36:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1613 transitions. [2020-10-27 23:36:54,435 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1613 transitions. Word has length 209 [2020-10-27 23:36:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:54,437 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1613 transitions. [2020-10-27 23:36:54,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:36:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1613 transitions. [2020-10-27 23:36:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 23:36:54,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:54,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:54,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:36:54,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1802987916, now seen corresponding path program 1 times [2020-10-27 23:36:54,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:54,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834995623] [2020-10-27 23:36:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 23:36:59,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:36:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:36:59,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:36:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 23:36:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:36:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:00,548 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:00,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:00,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 23:37:00,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:37:00,840 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 23:37:00,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834995623] [2020-10-27 23:37:00,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:00,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:37:00,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761480474] [2020-10-27 23:37:00,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:37:00,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:00,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:37:00,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:37:00,850 INFO L87 Difference]: Start difference. First operand 926 states and 1613 transitions. Second operand 9 states. [2020-10-27 23:37:01,848 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:37:08,719 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:09,633 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:37:10,622 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:37:11,475 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:12,407 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:37:13,320 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:37:14,240 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:37:15,272 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:37:16,122 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:37:17,871 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:37:18,769 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:37:19,775 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:37:21,564 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:37:22,466 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:37:23,440 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:23,491 INFO L93 Difference]: Finished difference Result 6263 states and 10666 transitions. [2020-10-27 23:37:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 23:37:23,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2020-10-27 23:37:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:23,524 INFO L225 Difference]: With dead ends: 6263 [2020-10-27 23:37:23,524 INFO L226 Difference]: Without dead ends: 5884 [2020-10-27 23:37:23,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 23:37:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2020-10-27 23:37:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 1973. [2020-10-27 23:37:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-27 23:37:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 3394 transitions. [2020-10-27 23:37:23,755 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 3394 transitions. Word has length 210 [2020-10-27 23:37:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:23,757 INFO L481 AbstractCegarLoop]: Abstraction has 1973 states and 3394 transitions. [2020-10-27 23:37:23,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:37:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 3394 transitions. [2020-10-27 23:37:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 23:37:23,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:23,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:23,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:37:23,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1995716409, now seen corresponding path program 1 times [2020-10-27 23:37:23,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:23,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295675129] [2020-10-27 23:37:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 23:37:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 23:37:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:37:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 23:37:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:37:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:29,909 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:29,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:37:29,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:30,051 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 23:37:30,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295675129] [2020-10-27 23:37:30,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:30,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:37:30,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426660678] [2020-10-27 23:37:30,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:37:30,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:30,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:37:30,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:30,058 INFO L87 Difference]: Start difference. First operand 1973 states and 3394 transitions. Second operand 5 states. [2020-10-27 23:37:30,991 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:37,191 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:37,467 INFO L93 Difference]: Finished difference Result 5890 states and 10055 transitions. [2020-10-27 23:37:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:37:37,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-27 23:37:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:37,497 INFO L225 Difference]: With dead ends: 5890 [2020-10-27 23:37:37,497 INFO L226 Difference]: Without dead ends: 4611 [2020-10-27 23:37:37,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:37:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2020-10-27 23:37:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 3322. [2020-10-27 23:37:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2020-10-27 23:37:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5687 transitions. [2020-10-27 23:37:37,823 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5687 transitions. Word has length 211 [2020-10-27 23:37:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:37,824 INFO L481 AbstractCegarLoop]: Abstraction has 3322 states and 5687 transitions. [2020-10-27 23:37:37,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5687 transitions. [2020-10-27 23:37:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 23:37:37,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:37,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:37,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:37:37,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:37,831 INFO L82 PathProgramCache]: Analyzing trace with hash 644832517, now seen corresponding path program 1 times [2020-10-27 23:37:37,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:37,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488259638] [2020-10-27 23:37:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 23:37:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 23:37:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:37:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-27 23:37:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:37:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:43,845 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:37:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:43,983 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 23:37:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488259638] [2020-10-27 23:37:43,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:43,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:37:43,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183715433] [2020-10-27 23:37:43,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:37:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:37:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:43,987 INFO L87 Difference]: Start difference. First operand 3322 states and 5687 transitions. Second operand 5 states. [2020-10-27 23:37:44,935 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:50,754 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:51,105 INFO L93 Difference]: Finished difference Result 11058 states and 18833 transitions. [2020-10-27 23:37:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:37:51,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-27 23:37:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:51,148 INFO L225 Difference]: With dead ends: 11058 [2020-10-27 23:37:51,148 INFO L226 Difference]: Without dead ends: 8510 [2020-10-27 23:37:51,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:37:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2020-10-27 23:37:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 5945. [2020-10-27 23:37:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5945 states. [2020-10-27 23:37:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 10139 transitions. [2020-10-27 23:37:51,791 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 10139 transitions. Word has length 212 [2020-10-27 23:37:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:51,791 INFO L481 AbstractCegarLoop]: Abstraction has 5945 states and 10139 transitions. [2020-10-27 23:37:51,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 10139 transitions. [2020-10-27 23:37:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 23:37:51,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:51,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:51,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:37:51,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:51,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1038769312, now seen corresponding path program 1 times [2020-10-27 23:37:51,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:51,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772490745] [2020-10-27 23:37:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 23:37:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:37:56,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:37:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 23:37:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:37:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:57,876 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:57,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:57,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:57,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:37:57,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:37:58,056 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 23:37:58,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772490745] [2020-10-27 23:37:58,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:58,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:37:58,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310568327] [2020-10-27 23:37:58,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:37:58,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:37:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:58,059 INFO L87 Difference]: Start difference. First operand 5945 states and 10139 transitions. Second operand 5 states. [2020-10-27 23:37:59,120 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:04,971 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:38:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:05,849 INFO L93 Difference]: Finished difference Result 21230 states and 36085 transitions. [2020-10-27 23:38:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:38:05,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 23:38:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:05,907 INFO L225 Difference]: With dead ends: 21230 [2020-10-27 23:38:05,907 INFO L226 Difference]: Without dead ends: 16151 [2020-10-27 23:38:05,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:38:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2020-10-27 23:38:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 11041. [2020-10-27 23:38:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-10-27 23:38:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 18775 transitions. [2020-10-27 23:38:07,010 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 18775 transitions. Word has length 213 [2020-10-27 23:38:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:07,011 INFO L481 AbstractCegarLoop]: Abstraction has 11041 states and 18775 transitions. [2020-10-27 23:38:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:38:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 18775 transitions. [2020-10-27 23:38:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:38:07,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:07,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:07,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:38:07,019 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:07,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:07,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1205171487, now seen corresponding path program 1 times [2020-10-27 23:38:07,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:07,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699894992] [2020-10-27 23:38:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:38:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:13,098 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:13,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:13,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:13,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:38:13,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:13,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:13,226 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 23:38:13,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699894992] [2020-10-27 23:38:13,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:13,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:13,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907873440] [2020-10-27 23:38:13,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:13,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:13,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:13,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:13,229 INFO L87 Difference]: Start difference. First operand 11041 states and 18775 transitions. Second operand 4 states. [2020-10-27 23:38:14,165 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:20,739 INFO L93 Difference]: Finished difference Result 29589 states and 50225 transitions. [2020-10-27 23:38:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:20,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:38:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:20,794 INFO L225 Difference]: With dead ends: 29589 [2020-10-27 23:38:20,794 INFO L226 Difference]: Without dead ends: 19210 [2020-10-27 23:38:20,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2020-10-27 23:38:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 19207. [2020-10-27 23:38:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19207 states. [2020-10-27 23:38:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19207 states to 19207 states and 32547 transitions. [2020-10-27 23:38:22,452 INFO L78 Accepts]: Start accepts. Automaton has 19207 states and 32547 transitions. Word has length 214 [2020-10-27 23:38:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:22,452 INFO L481 AbstractCegarLoop]: Abstraction has 19207 states and 32547 transitions. [2020-10-27 23:38:22,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 19207 states and 32547 transitions. [2020-10-27 23:38:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:38:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:22,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:22,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:38:22,459 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash 621387649, now seen corresponding path program 1 times [2020-10-27 23:38:22,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:22,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145107887] [2020-10-27 23:38:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:38:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:28,540 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:28,641 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 23:38:28,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145107887] [2020-10-27 23:38:28,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:28,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:28,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179178198] [2020-10-27 23:38:28,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:28,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:28,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:28,644 INFO L87 Difference]: Start difference. First operand 19207 states and 32547 transitions. Second operand 4 states. [2020-10-27 23:38:29,551 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:36,909 INFO L93 Difference]: Finished difference Result 52451 states and 88803 transitions. [2020-10-27 23:38:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:36,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:38:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:36,995 INFO L225 Difference]: With dead ends: 52451 [2020-10-27 23:38:36,995 INFO L226 Difference]: Without dead ends: 33952 [2020-10-27 23:38:37,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33952 states. [2020-10-27 23:38:39,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33952 to 33949. [2020-10-27 23:38:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33949 states. [2020-10-27 23:38:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33949 states to 33949 states and 57369 transitions. [2020-10-27 23:38:39,914 INFO L78 Accepts]: Start accepts. Automaton has 33949 states and 57369 transitions. Word has length 214 [2020-10-27 23:38:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:39,915 INFO L481 AbstractCegarLoop]: Abstraction has 33949 states and 57369 transitions. [2020-10-27 23:38:39,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 33949 states and 57369 transitions. [2020-10-27 23:38:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:38:39,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:39,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:39,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:38:39,921 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 507206782, now seen corresponding path program 1 times [2020-10-27 23:38:39,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:39,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589910535] [2020-10-27 23:38:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:45,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:45,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:38:45,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:38:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 23:38:45,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:38:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 23:38:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:38:45,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:46,055 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:46,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:38:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:46,151 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 23:38:46,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589910535] [2020-10-27 23:38:46,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:46,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:38:46,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981838406] [2020-10-27 23:38:46,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:38:46,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:46,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:38:46,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:46,154 INFO L87 Difference]: Start difference. First operand 33949 states and 57369 transitions. Second operand 5 states. [2020-10-27 23:38:47,088 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:52,770 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:38:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:59,497 INFO L93 Difference]: Finished difference Result 133606 states and 225663 transitions. [2020-10-27 23:38:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:38:59,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 23:38:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:59,783 INFO L225 Difference]: With dead ends: 133606 [2020-10-27 23:38:59,783 INFO L226 Difference]: Without dead ends: 100387 [2020-10-27 23:39:00,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:39:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100387 states. [2020-10-27 23:39:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100387 to 66941. [2020-10-27 23:39:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66941 states. [2020-10-27 23:39:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66941 states to 66941 states and 112889 transitions. [2020-10-27 23:39:06,049 INFO L78 Accepts]: Start accepts. Automaton has 66941 states and 112889 transitions. Word has length 214 [2020-10-27 23:39:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:06,049 INFO L481 AbstractCegarLoop]: Abstraction has 66941 states and 112889 transitions. [2020-10-27 23:39:06,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:39:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 66941 states and 112889 transitions. [2020-10-27 23:39:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:39:06,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:06,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:06,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:39:06,054 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1476304479, now seen corresponding path program 1 times [2020-10-27 23:39:06,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654867910] [2020-10-27 23:39:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:11,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:39:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:12,076 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:12,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:12,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:39:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:12,157 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 23:39:12,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654867910] [2020-10-27 23:39:12,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:12,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:12,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721135458] [2020-10-27 23:39:12,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:12,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:12,159 INFO L87 Difference]: Start difference. First operand 66941 states and 112889 transitions. Second operand 4 states. [2020-10-27 23:39:13,085 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:39:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:27,136 INFO L93 Difference]: Finished difference Result 184803 states and 311485 transitions. [2020-10-27 23:39:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:39:27,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:39:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:27,405 INFO L225 Difference]: With dead ends: 184803 [2020-10-27 23:39:27,405 INFO L226 Difference]: Without dead ends: 118572 [2020-10-27 23:39:27,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118572 states. [2020-10-27 23:39:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118572 to 118451. [2020-10-27 23:39:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118451 states. [2020-10-27 23:39:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118451 states to 118451 states and 199192 transitions. [2020-10-27 23:39:37,206 INFO L78 Accepts]: Start accepts. Automaton has 118451 states and 199192 transitions. Word has length 214 [2020-10-27 23:39:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:37,207 INFO L481 AbstractCegarLoop]: Abstraction has 118451 states and 199192 transitions. [2020-10-27 23:39:37,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:39:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 118451 states and 199192 transitions. [2020-10-27 23:39:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:39:37,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:37,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:37,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:39:37,210 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:37,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1327173825, now seen corresponding path program 1 times [2020-10-27 23:39:37,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:37,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096070512] [2020-10-27 23:39:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:42,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:39:42,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:39:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 23:39:42,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-27 23:39:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:39:42,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:43,264 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:43,342 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 23:39:43,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096070512] [2020-10-27 23:39:43,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:43,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:43,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911636902] [2020-10-27 23:39:43,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:43,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:43,344 INFO L87 Difference]: Start difference. First operand 118451 states and 199192 transitions. Second operand 4 states. [2020-10-27 23:39:44,356 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 401