/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.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:37:54,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:37:54,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:37:54,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:37:54,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:37:54,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:37:54,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:37:54,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:37:54,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:37:54,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:37:54,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:37:54,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:37:54,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:37:54,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:37:54,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:37:54,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:37:54,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:37:54,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:37:54,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:37:54,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:37:54,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:37:54,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:37:54,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:37:54,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:37:54,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:37:54,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:37:54,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:37:54,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:37:54,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:37:54,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:37:54,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:37:54,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:37:54,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:37:54,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:37:54,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:37:54,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:37:54,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:37:54,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:37:54,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:37:54,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:37:54,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:37:54,248 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 23:37:54,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:37:54,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:37:54,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:37:54,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:37:54,277 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:37:54,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:37:54,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:37:54,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:37:54,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:37:54,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:37:54,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:37:54,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:37:54,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:37:54,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:37:54,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:37:54,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:37:54,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:37:54,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:37:54,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:37:54,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:37:54,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:37:54,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:37:54,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:37:54,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:37:54,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:37:54,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:37:54,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:37:54,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:37:54,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:37:54,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:37:54,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:37:54,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:37:54,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:37:54,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:37:54,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:37:54,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:37:54,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e2aac/14c894341cc84c3ab2718455e8303dd3/FLAGdb6592a23 [2020-10-27 23:37:55,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:37:55,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:37:55,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e2aac/14c894341cc84c3ab2718455e8303dd3/FLAGdb6592a23 [2020-10-27 23:37:55,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e2aac/14c894341cc84c3ab2718455e8303dd3 [2020-10-27 23:37:55,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:37:55,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:37:55,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:37:55,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:37:55,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:37:55,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:37:55" (1/1) ... [2020-10-27 23:37:55,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29dbd51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:55, skipping insertion in model container [2020-10-27 23:37:55,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:37:55" (1/1) ... [2020-10-27 23:37:55,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:37:55,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:37:56,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:37:56,702 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:37:56,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:37:56,967 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:37:56,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56 WrapperNode [2020-10-27 23:37:56,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:37:56,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:37:56,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:37:56,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:37:56,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:56,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (1/1) ... [2020-10-27 23:37:57,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:37:57,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:37:57,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:37:57,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:37:57,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (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 23:37:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:37:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:37:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:37:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:37:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:37:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:37:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:37:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:37:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:37:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:37:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:37:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:37:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:37:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:37:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:37:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:37:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:37:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:37:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:37:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:37:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:37:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:37:59,868 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:37:59,869 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:37:59,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:37:59 BoogieIcfgContainer [2020-10-27 23:37:59,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:37:59,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:37:59,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:37:59,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:37:59,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:37:55" (1/3) ... [2020-10-27 23:37:59,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f24014a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:37:59, skipping insertion in model container [2020-10-27 23:37:59,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:37:56" (2/3) ... [2020-10-27 23:37:59,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f24014a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:37:59, skipping insertion in model container [2020-10-27 23:37:59,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:37:59" (3/3) ... [2020-10-27 23:37:59,884 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:37:59,895 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:37:59,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:37:59,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:37:59,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:37:59,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:37:59,949 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:37:59,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:37:59,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:37:59,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:37:59,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:37:59,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:37:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-27 23:38:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 23:38:00,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:00,030 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 23:38:00,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-27 23:38:00,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:00,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515054225] [2020-10-27 23:38:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:02,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 23:38:05,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:38:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 23:38:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 23:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:38:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:38:07,261 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:38:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:38:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515054225] [2020-10-27 23:38:07,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:07,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:38:07,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756810486] [2020-10-27 23:38:07,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:38:07,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:38:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:38:07,524 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 8 states. [2020-10-27 23:38:07,786 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-27 23:38:09,098 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 407 [2020-10-27 23:38:16,825 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:17,956 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:38:19,137 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:38:20,240 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:38:21,601 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:38:22,756 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:38:23,882 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:24,993 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:38:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:25,237 INFO L93 Difference]: Finished difference Result 2695 states and 4671 transitions. [2020-10-27 23:38:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 23:38:25,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2020-10-27 23:38:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:25,301 INFO L225 Difference]: With dead ends: 2695 [2020-10-27 23:38:25,301 INFO L226 Difference]: Without dead ends: 2457 [2020-10-27 23:38:25,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:38:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-10-27 23:38:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 926. [2020-10-27 23:38:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-10-27 23:38:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1613 transitions. [2020-10-27 23:38:25,495 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1613 transitions. Word has length 209 [2020-10-27 23:38:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:25,502 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1613 transitions. [2020-10-27 23:38:25,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:38:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1613 transitions. [2020-10-27 23:38:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 23:38:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:25,512 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 23:38:25,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:38:25,512 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1802987916, now seen corresponding path program 1 times [2020-10-27 23:38:25,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:25,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641715244] [2020-10-27 23:38:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:26,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:30,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 23:38:30,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:38:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 23:38:30,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:38:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 23:38:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:38:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:31,975 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:32,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 23:38:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:38:32,141 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 23:38:32,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641715244] [2020-10-27 23:38:32,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:32,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:38:32,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172979478] [2020-10-27 23:38:32,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:38:32,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:32,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:38:32,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:38:32,147 INFO L87 Difference]: Start difference. First operand 926 states and 1613 transitions. Second operand 9 states. [2020-10-27 23:38:33,540 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:38:40,942 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:42,189 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:38:43,430 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:38:44,516 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:38:45,786 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:38:47,167 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:38:48,405 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:38:49,792 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:38:50,960 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:38:53,046 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:38:54,288 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:38:55,565 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:38:57,604 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:38:58,851 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:39:00,076 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:39:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:00,128 INFO L93 Difference]: Finished difference Result 6263 states and 10666 transitions. [2020-10-27 23:39:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 23:39:00,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2020-10-27 23:39:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:00,161 INFO L225 Difference]: With dead ends: 6263 [2020-10-27 23:39:00,161 INFO L226 Difference]: Without dead ends: 5884 [2020-10-27 23:39:00,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 23:39:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2020-10-27 23:39:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 1973. [2020-10-27 23:39:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-27 23:39:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 3394 transitions. [2020-10-27 23:39:00,369 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 3394 transitions. Word has length 210 [2020-10-27 23:39:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:00,371 INFO L481 AbstractCegarLoop]: Abstraction has 1973 states and 3394 transitions. [2020-10-27 23:39:00,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:39:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 3394 transitions. [2020-10-27 23:39:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 23:39:00,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:00,377 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 23:39:00,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:39:00,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1995716409, now seen corresponding path program 1 times [2020-10-27 23:39:00,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:00,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597927859] [2020-10-27 23:39:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:05,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:05,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 23:39:05,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:39:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:07,012 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:07,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:07,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:07,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:39:07,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:07,149 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 23:39:07,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597927859] [2020-10-27 23:39:07,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:07,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:39:07,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455962984] [2020-10-27 23:39:07,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:39:07,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:39:07,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:07,157 INFO L87 Difference]: Start difference. First operand 1973 states and 3394 transitions. Second operand 5 states. [2020-10-27 23:39:08,312 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:39:14,816 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:39:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:15,073 INFO L93 Difference]: Finished difference Result 5890 states and 10055 transitions. [2020-10-27 23:39:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:39:15,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-27 23:39:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:15,105 INFO L225 Difference]: With dead ends: 5890 [2020-10-27 23:39:15,106 INFO L226 Difference]: Without dead ends: 4611 [2020-10-27 23:39:15,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:39:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2020-10-27 23:39:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 3322. [2020-10-27 23:39:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2020-10-27 23:39:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5687 transitions. [2020-10-27 23:39:15,449 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5687 transitions. Word has length 211 [2020-10-27 23:39:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:15,450 INFO L481 AbstractCegarLoop]: Abstraction has 3322 states and 5687 transitions. [2020-10-27 23:39:15,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:39:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5687 transitions. [2020-10-27 23:39:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 23:39:15,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:15,456 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 23:39:15,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:39:15,456 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:15,457 INFO L82 PathProgramCache]: Analyzing trace with hash 644832517, now seen corresponding path program 1 times [2020-10-27 23:39:15,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:15,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851858604] [2020-10-27 23:39:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-27 23:39:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:39:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:22,023 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:22,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:22,182 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 23:39:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851858604] [2020-10-27 23:39:22,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:22,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:39:22,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629816497] [2020-10-27 23:39:22,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:39:22,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:22,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:39:22,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:22,185 INFO L87 Difference]: Start difference. First operand 3322 states and 5687 transitions. Second operand 5 states. [2020-10-27 23:39:23,350 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:39:30,079 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:39:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:30,433 INFO L93 Difference]: Finished difference Result 11058 states and 18833 transitions. [2020-10-27 23:39:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:39:30,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-27 23:39:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:30,477 INFO L225 Difference]: With dead ends: 11058 [2020-10-27 23:39:30,478 INFO L226 Difference]: Without dead ends: 8510 [2020-10-27 23:39:30,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:39:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2020-10-27 23:39:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 5945. [2020-10-27 23:39:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5945 states. [2020-10-27 23:39:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 10139 transitions. [2020-10-27 23:39:31,075 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 10139 transitions. Word has length 212 [2020-10-27 23:39:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:31,076 INFO L481 AbstractCegarLoop]: Abstraction has 5945 states and 10139 transitions. [2020-10-27 23:39:31,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:39:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 10139 transitions. [2020-10-27 23:39:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 23:39:31,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:31,084 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 23:39:31,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:39:31,085 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:31,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1038769312, now seen corresponding path program 1 times [2020-10-27 23:39:31,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:31,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685884274] [2020-10-27 23:39:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 23:39:36,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:39:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:37,462 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:39:37,553 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 23:39:37,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685884274] [2020-10-27 23:39:37,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:37,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:39:37,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939734020] [2020-10-27 23:39:37,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:39:37,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:37,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:39:37,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:37,555 INFO L87 Difference]: Start difference. First operand 5945 states and 10139 transitions. Second operand 5 states. [2020-10-27 23:39:38,705 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:39:45,113 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:39:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:45,935 INFO L93 Difference]: Finished difference Result 21230 states and 36085 transitions. [2020-10-27 23:39:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:39:45,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 23:39:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:46,001 INFO L225 Difference]: With dead ends: 21230 [2020-10-27 23:39:46,001 INFO L226 Difference]: Without dead ends: 16151 [2020-10-27 23:39:46,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:39:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2020-10-27 23:39:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 11041. [2020-10-27 23:39:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-10-27 23:39:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 18775 transitions. [2020-10-27 23:39:47,093 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 18775 transitions. Word has length 213 [2020-10-27 23:39:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:47,094 INFO L481 AbstractCegarLoop]: Abstraction has 11041 states and 18775 transitions. [2020-10-27 23:39:47,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:39:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 18775 transitions. [2020-10-27 23:39:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:39:47,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:47,101 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 23:39:47,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:39:47,102 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:47,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1205171487, now seen corresponding path program 1 times [2020-10-27 23:39:47,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:47,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73680762] [2020-10-27 23:39:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:52,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:39:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:39:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 23:39:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 23:39:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:39:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:53,373 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:39:53,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:53,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:53,466 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 23:39:53,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73680762] [2020-10-27 23:39:53,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:53,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:53,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393953336] [2020-10-27 23:39:53,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:53,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:53,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:53,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:53,468 INFO L87 Difference]: Start difference. First operand 11041 states and 18775 transitions. Second operand 4 states. [2020-10-27 23:39:54,683 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:40:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:01,644 INFO L93 Difference]: Finished difference Result 29589 states and 50225 transitions. [2020-10-27 23:40:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:01,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:40:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:01,700 INFO L225 Difference]: With dead ends: 29589 [2020-10-27 23:40:01,700 INFO L226 Difference]: Without dead ends: 19210 [2020-10-27 23:40:01,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2020-10-27 23:40:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 19207. [2020-10-27 23:40:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19207 states. [2020-10-27 23:40:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19207 states to 19207 states and 32547 transitions. [2020-10-27 23:40:03,115 INFO L78 Accepts]: Start accepts. Automaton has 19207 states and 32547 transitions. Word has length 214 [2020-10-27 23:40:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:03,116 INFO L481 AbstractCegarLoop]: Abstraction has 19207 states and 32547 transitions. [2020-10-27 23:40:03,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:03,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19207 states and 32547 transitions. [2020-10-27 23:40:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:40:03,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:03,122 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 23:40:03,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:40:03,123 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:03,124 INFO L82 PathProgramCache]: Analyzing trace with hash 621387649, now seen corresponding path program 1 times [2020-10-27 23:40:03,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:03,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819644458] [2020-10-27 23:40:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:08,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:08,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:40:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:09,408 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:40:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:09,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:09,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:09,491 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 23:40:09,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819644458] [2020-10-27 23:40:09,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:09,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:09,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933286648] [2020-10-27 23:40:09,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:09,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:09,494 INFO L87 Difference]: Start difference. First operand 19207 states and 32547 transitions. Second operand 4 states. [2020-10-27 23:40:10,708 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:40:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:18,500 INFO L93 Difference]: Finished difference Result 52451 states and 88803 transitions. [2020-10-27 23:40:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:18,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:40:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:18,606 INFO L225 Difference]: With dead ends: 52451 [2020-10-27 23:40:18,606 INFO L226 Difference]: Without dead ends: 33952 [2020-10-27 23:40:18,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33952 states. [2020-10-27 23:40:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33952 to 33949. [2020-10-27 23:40:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33949 states. [2020-10-27 23:40:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33949 states to 33949 states and 57369 transitions. [2020-10-27 23:40:21,207 INFO L78 Accepts]: Start accepts. Automaton has 33949 states and 57369 transitions. Word has length 214 [2020-10-27 23:40:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:21,207 INFO L481 AbstractCegarLoop]: Abstraction has 33949 states and 57369 transitions. [2020-10-27 23:40:21,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33949 states and 57369 transitions. [2020-10-27 23:40:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:40:21,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:21,212 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 23:40:21,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:40:21,212 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash 507206782, now seen corresponding path program 1 times [2020-10-27 23:40:21,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:21,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782930531] [2020-10-27 23:40:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:26,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:40:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:27,480 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:40:27,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:27,564 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 23:40:27,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782930531] [2020-10-27 23:40:27,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:27,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:40:27,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572896877] [2020-10-27 23:40:27,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:40:27,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:27,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:40:27,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:27,566 INFO L87 Difference]: Start difference. First operand 33949 states and 57369 transitions. Second operand 5 states. [2020-10-27 23:40:28,787 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:40:35,144 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:40:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:41,404 INFO L93 Difference]: Finished difference Result 133606 states and 225663 transitions. [2020-10-27 23:40:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:40:41,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 23:40:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:41,719 INFO L225 Difference]: With dead ends: 133606 [2020-10-27 23:40:41,719 INFO L226 Difference]: Without dead ends: 100387 [2020-10-27 23:40:42,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:40:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100387 states. [2020-10-27 23:40:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100387 to 66941. [2020-10-27 23:40:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66941 states. [2020-10-27 23:40:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66941 states to 66941 states and 112889 transitions. [2020-10-27 23:40:47,906 INFO L78 Accepts]: Start accepts. Automaton has 66941 states and 112889 transitions. Word has length 214 [2020-10-27 23:40:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:47,906 INFO L481 AbstractCegarLoop]: Abstraction has 66941 states and 112889 transitions. [2020-10-27 23:40:47,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:40:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 66941 states and 112889 transitions. [2020-10-27 23:40:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:40:47,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:47,911 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 23:40:47,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:40:47,911 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1476304479, now seen corresponding path program 1 times [2020-10-27 23:40:47,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:47,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174488062] [2020-10-27 23:40:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:40:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:54,146 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:40:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:54,228 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 23:40:54,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174488062] [2020-10-27 23:40:54,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:54,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:54,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524669621] [2020-10-27 23:40:54,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:54,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:54,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:54,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:54,230 INFO L87 Difference]: Start difference. First operand 66941 states and 112889 transitions. Second operand 4 states. [2020-10-27 23:40:55,389 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:41:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:09,237 INFO L93 Difference]: Finished difference Result 184803 states and 311485 transitions. [2020-10-27 23:41:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:41:09,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-27 23:41:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:09,621 INFO L225 Difference]: With dead ends: 184803 [2020-10-27 23:41:09,621 INFO L226 Difference]: Without dead ends: 118572 [2020-10-27 23:41:09,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:41:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118572 states. [2020-10-27 23:41:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118572 to 118451. [2020-10-27 23:41:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118451 states. [2020-10-27 23:41:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118451 states to 118451 states and 199192 transitions. [2020-10-27 23:41:18,881 INFO L78 Accepts]: Start accepts. Automaton has 118451 states and 199192 transitions. Word has length 214 [2020-10-27 23:41:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:18,882 INFO L481 AbstractCegarLoop]: Abstraction has 118451 states and 199192 transitions. [2020-10-27 23:41:18,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:41:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 118451 states and 199192 transitions. [2020-10-27 23:41:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 23:41:18,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:18,885 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 23:41:18,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:41:18,886 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:18,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:18,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1327173825, now seen corresponding path program 1 times [2020-10-27 23:41:18,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:18,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476553909] [2020-10-27 23:41:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:24,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 23:41:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:41:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 23:41:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:41:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-27 23:41:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:41:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:25,210 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:41:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:25,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:41:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:25,303 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 23:41:25,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476553909] [2020-10-27 23:41:25,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:25,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:41:25,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655048316] [2020-10-27 23:41:25,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:41:25,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:25,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:41:25,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:41:25,306 INFO L87 Difference]: Start difference. First operand 118451 states and 199192 transitions. Second operand 4 states. [2020-10-27 23:41:26,567 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 401