/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:13:10,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:13:10,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:13:10,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:13:10,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:13:10,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:13:10,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:13:10,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:13:10,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:13:10,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:13:10,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:13:10,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:13:10,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:13:10,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:13:10,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:13:10,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:13:10,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:13:10,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:13:10,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:13:10,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:13:10,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:13:10,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:13:10,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:13:10,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:13:10,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:13:10,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:13:10,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:13:10,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:13:10,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:13:10,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:13:10,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:13:10,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:13:10,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:13:10,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:13:10,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:13:10,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:13:10,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:13:10,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:13:10,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:13:10,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:13:10,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:13:10,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:13:10,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:13:10,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:13:10,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:13:10,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:13:10,220 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:13:10,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:13:10,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:13:10,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:13:10,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:13:10,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:13:10,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:13:10,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:13:10,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:13:10,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:13:10,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:13:10,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:13:10,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:13:10,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:13:10,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:13:10,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:13:10,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:13:10,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:13:10,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:13:10,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:13:10,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:13:10,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:13:10,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:13:10,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:13:10,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:13:10,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:13:10,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:13:10,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:13:10,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:13:10,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:13:10,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:13:10,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:13:10,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f95efb8d/3f358ac112ea483abb51756888ea7732/FLAGa53e574d8 [2020-10-29 14:13:11,743 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:13:11,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:13:11,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f95efb8d/3f358ac112ea483abb51756888ea7732/FLAGa53e574d8 [2020-10-29 14:13:12,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f95efb8d/3f358ac112ea483abb51756888ea7732 [2020-10-29 14:13:12,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:13:12,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:13:12,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:13:12,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:13:12,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:13:12,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:13:12" (1/1) ... [2020-10-29 14:13:12,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8047ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:12, skipping insertion in model container [2020-10-29 14:13:12,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:13:12" (1/1) ... [2020-10-29 14:13:12,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:13:12,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:13:17,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:13:17,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:13:20,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:13:20,563 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:13:20,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20 WrapperNode [2020-10-29 14:13:20,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:13:20,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:13:20,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:13:20,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:13:20,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:20,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... [2020-10-29 14:13:21,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:13:21,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:13:21,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:13:21,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:13:21,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:13:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:13:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:13:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:13:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:13:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:13:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:13:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:13:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:13:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:13:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:13:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:13:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:13:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:13:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:13:44,792 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:13:44,792 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:13:44,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:13:44 BoogieIcfgContainer [2020-10-29 14:13:44,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:13:44,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:13:44,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:13:44,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:13:44,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:13:12" (1/3) ... [2020-10-29 14:13:44,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3156ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:13:44, skipping insertion in model container [2020-10-29 14:13:44,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:20" (2/3) ... [2020-10-29 14:13:44,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3156ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:13:44, skipping insertion in model container [2020-10-29 14:13:44,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:13:44" (3/3) ... [2020-10-29 14:13:44,809 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:13:44,821 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:13:44,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:13:44,841 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:13:44,890 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:13:44,890 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:13:44,890 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:13:44,890 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:13:44,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:13:44,891 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:13:44,891 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:13:44,891 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:13:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6858 states. [2020-10-29 14:13:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 14:13:45,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:45,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:13:45,074 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash -284146511, now seen corresponding path program 1 times [2020-10-29 14:13:45,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:45,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757153712] [2020-10-29 14:13:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:50,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-29 14:13:50,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:13:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5310 [2020-10-29 14:13:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:50,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:13:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:13:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 14:13:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 14:13:54,965 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-29 14:13:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:55,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:55,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:55,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757153712] [2020-10-29 14:13:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:13:55,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140071294] [2020-10-29 14:13:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:13:55,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:55,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:13:55,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:55,624 INFO L87 Difference]: Start difference. First operand 6858 states. Second operand 5 states. [2020-10-29 14:15:05,431 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-29 14:15:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:15:11,679 INFO L93 Difference]: Finished difference Result 20426 states and 35725 transitions. [2020-10-29 14:15:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:15:11,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-29 14:15:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:15:11,776 INFO L225 Difference]: With dead ends: 20426 [2020-10-29 14:15:11,776 INFO L226 Difference]: Without dead ends: 13609 [2020-10-29 14:15:11,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:15:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13609 states. [2020-10-29 14:15:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13609 to 13606. [2020-10-29 14:15:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13606 states. [2020-10-29 14:15:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13606 states to 13606 states and 22447 transitions. [2020-10-29 14:15:12,456 INFO L78 Accepts]: Start accepts. Automaton has 13606 states and 22447 transitions. Word has length 393 [2020-10-29 14:15:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:15:12,462 INFO L481 AbstractCegarLoop]: Abstraction has 13606 states and 22447 transitions. [2020-10-29 14:15:12,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:15:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 13606 states and 22447 transitions. [2020-10-29 14:15:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 14:15:12,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:15:12,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:15:12,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:15:12,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:15:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:15:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1562215800, now seen corresponding path program 1 times [2020-10-29 14:15:12,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:15:12,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466243679] [2020-10-29 14:15:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:15:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-29 14:15:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:15:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 14:15:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:17,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:15:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:15:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 14:15:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:15:21,644 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-29 14:15:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:15:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:15:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:15:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:15:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:15:22,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466243679] [2020-10-29 14:15:22,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:15:22,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:15:22,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719083293] [2020-10-29 14:15:22,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:15:22,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:15:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:15:22,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:22,194 INFO L87 Difference]: Start difference. First operand 13606 states and 22447 transitions. Second operand 5 states. [2020-10-29 14:16:38,541 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-29 14:16:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:16:44,824 INFO L93 Difference]: Finished difference Result 40700 states and 67138 transitions. [2020-10-29 14:16:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:16:44,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-29 14:16:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:16:44,916 INFO L225 Difference]: With dead ends: 40700 [2020-10-29 14:16:44,917 INFO L226 Difference]: Without dead ends: 27109 [2020-10-29 14:16:44,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:16:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27109 states. [2020-10-29 14:16:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27109 to 27106. [2020-10-29 14:16:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27106 states. [2020-10-29 14:16:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27106 states to 27106 states and 44650 transitions. [2020-10-29 14:16:46,109 INFO L78 Accepts]: Start accepts. Automaton has 27106 states and 44650 transitions. Word has length 393 [2020-10-29 14:16:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:16:46,109 INFO L481 AbstractCegarLoop]: Abstraction has 27106 states and 44650 transitions. [2020-10-29 14:16:46,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:16:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27106 states and 44650 transitions. [2020-10-29 14:16:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 14:16:46,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:16:46,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:16:46,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:16:46,200 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:16:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:16:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1329680630, now seen corresponding path program 1 times [2020-10-29 14:16:46,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:16:46,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710250729] [2020-10-29 14:16:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:16:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:51,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 14:16:51,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:16:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 14:16:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:51,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:16:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:16:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 14:16:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:54,856 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-29 14:16:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:16:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:54,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:16:54,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:16:54,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:16:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:16:55,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710250729] [2020-10-29 14:16:55,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:16:55,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:16:55,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786575527] [2020-10-29 14:16:55,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:16:55,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:16:55,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:16:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:16:55,196 INFO L87 Difference]: Start difference. First operand 27106 states and 44650 transitions. Second operand 4 states.