/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=SHALLOWEST --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/eca-rers2012/Problem05_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:21:09,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:21:09,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:21:09,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:21:09,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:21:09,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:21:09,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:21:09,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:21:09,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:21:09,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:21:09,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:21:09,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:21:09,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:21:09,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:21:09,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:21:09,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:21:09,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:21:09,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:21:09,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:21:10,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:21:10,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:21:10,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:21:10,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:21:10,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:21:10,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:21:10,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:21:10,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:21:10,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:21:10,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:21:10,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:21:10,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:21:10,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:21:10,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:21:10,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:21:10,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:21:10,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:21:10,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:21:10,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:21:10,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:21:10,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:21:10,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:21:10,045 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 [2020-10-26 21:21:10,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:21:10,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:21:10,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:21:10,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:21:10,076 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:21:10,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:21:10,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:21:10,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:21:10,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:21:10,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:21:10,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:21:10,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:21:10,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:21:10,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:21:10,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:21:10,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:21:10,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:21:10,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:21:10,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:21:10,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:21:10,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:21:10,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:21:10,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:21:10,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:21:10,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:21:10,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:21:10,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:21:10,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:21:10,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:21:10,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:21:10,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:21:10,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:21:10,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:21:10,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:21:10,603 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:21:10,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label43.c [2020-10-26 21:21:10,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e8bacc8e/1c93b25ecaf34be3956e92387bddf43a/FLAG51e535d09 [2020-10-26 21:21:12,033 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:21:12,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label43.c [2020-10-26 21:21:12,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e8bacc8e/1c93b25ecaf34be3956e92387bddf43a/FLAG51e535d09 [2020-10-26 21:21:12,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e8bacc8e/1c93b25ecaf34be3956e92387bddf43a [2020-10-26 21:21:12,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:21:12,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:21:12,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:21:12,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:21:12,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:21:12,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:12" (1/1) ... [2020-10-26 21:21:12,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b05068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:12, skipping insertion in model container [2020-10-26 21:21:12,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:12" (1/1) ... [2020-10-26 21:21:12,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:21:12,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:21:14,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:21:14,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:21:16,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:21:16,314 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:21:16,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16 WrapperNode [2020-10-26 21:21:16,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:21:16,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:21:16,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:21:16,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:21:16,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:16,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (1/1) ... [2020-10-26 21:21:17,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:21:17,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:21:17,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:21:17,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:21:17,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (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 [2020-10-26 21:21:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:21:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:21:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:21:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:21:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:21:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:21:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:21:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:21:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:21:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:21:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:21:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:21:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:21:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:21:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:21:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:21:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:21:27,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:21:27,151 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:21:27,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:27 BoogieIcfgContainer [2020-10-26 21:21:27,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:21:27,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:21:27,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:21:27,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:21:27,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:21:12" (1/3) ... [2020-10-26 21:21:27,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae5bcde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:27, skipping insertion in model container [2020-10-26 21:21:27,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:16" (2/3) ... [2020-10-26 21:21:27,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae5bcde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:27, skipping insertion in model container [2020-10-26 21:21:27,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:27" (3/3) ... [2020-10-26 21:21:27,167 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43.c [2020-10-26 21:21:27,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:21:27,189 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:21:27,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:21:27,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:21:27,247 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:21:27,247 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:21:27,247 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:21:27,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:21:27,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:21:27,248 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:21:27,248 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:21:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:21:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2020-10-26 21:21:27,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:21:27,464 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:21:27,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:21:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:21:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 572220655, now seen corresponding path program 1 times [2020-10-26 21:21:27,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:21:27,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139956792] [2020-10-26 21:21:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:21:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:33,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-26 21:21:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-26 21:21:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:21:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:21:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1721 [2020-10-26 21:21:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:21:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:21:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:36,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:21:36,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 21:21:36,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:21:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:21:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:21:36,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:21:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:21:39,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139956792] [2020-10-26 21:21:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:21:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:21:39,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376856739] [2020-10-26 21:21:39,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:21:39,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:21:39,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:21:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:21:39,279 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:22:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:22:02,988 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-26 21:22:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:22:02,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1706 [2020-10-26 21:22:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:22:03,060 INFO L225 Difference]: With dead ends: 6365 [2020-10-26 21:22:03,060 INFO L226 Difference]: Without dead ends: 4075 [2020-10-26 21:22:03,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:22:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-26 21:22:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-26 21:22:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-26 21:22:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-26 21:22:03,347 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1706 [2020-10-26 21:22:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:22:03,354 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-26 21:22:03,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:22:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-26 21:22:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-26 21:22:03,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:22:03,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:22:03,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:22:03,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:22:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:22:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash -194329625, now seen corresponding path program 1 times [2020-10-26 21:22:03,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:22:03,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206020192] [2020-10-26 21:22:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:22:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:09,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:09,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-26 21:22:09,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:22:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5196 [2020-10-26 21:22:09,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:22:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:22:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:22:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:22:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:22:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:09,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:22:09,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:22:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:22:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:22:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:22:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:22:09,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:22:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:22:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 21:22:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:22:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:22:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:22:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:22:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:22:11,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206020192] [2020-10-26 21:22:11,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:22:11,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:22:11,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809586647] [2020-10-26 21:22:11,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:22:11,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:22:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:22:11,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:22:11,272 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 8 states. [2020-10-26 21:22:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:22:55,756 INFO L93 Difference]: Finished difference Result 15483 states and 25575 transitions. [2020-10-26 21:22:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 21:22:55,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1717 [2020-10-26 21:22:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:22:55,830 INFO L225 Difference]: With dead ends: 15483 [2020-10-26 21:22:55,831 INFO L226 Difference]: Without dead ends: 11484 [2020-10-26 21:22:55,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:22:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11484 states. [2020-10-26 21:22:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 11297. [2020-10-26 21:22:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11297 states. [2020-10-26 21:22:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 15203 transitions. [2020-10-26 21:22:56,163 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 15203 transitions. Word has length 1717 [2020-10-26 21:22:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:22:56,164 INFO L481 AbstractCegarLoop]: Abstraction has 11297 states and 15203 transitions. [2020-10-26 21:22:56,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:22:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 15203 transitions. [2020-10-26 21:22:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1729 [2020-10-26 21:22:56,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:22:56,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:22:56,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:22:56,227 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:22:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:22:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash 436721200, now seen corresponding path program 1 times [2020-10-26 21:22:56,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:22:56,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503543029] [2020-10-26 21:22:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:22:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1754 [2020-10-26 21:23:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:23:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-26 21:23:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:23:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:23:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:23:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:02,729 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 21:23:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:23:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:02,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:02,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:23:02,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:02,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:23:02,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:02,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:23:02,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:23:02,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:23:02,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:23:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:02,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:23:02,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 21:23:02,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:23:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:23:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:23:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:23:04,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503543029] [2020-10-26 21:23:04,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:23:04,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:23:04,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943092417] [2020-10-26 21:23:04,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:23:04,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:23:04,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:23:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:23:04,495 INFO L87 Difference]: Start difference. First operand 11297 states and 15203 transitions. Second operand 7 states. [2020-10-26 21:23:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:23:36,842 INFO L93 Difference]: Finished difference Result 29106 states and 40238 transitions. [2020-10-26 21:23:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:23:36,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1728 [2020-10-26 21:23:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:23:36,955 INFO L225 Difference]: With dead ends: 29106 [2020-10-26 21:23:36,956 INFO L226 Difference]: Without dead ends: 17815 [2020-10-26 21:23:36,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:23:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17815 states. [2020-10-26 21:23:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17815 to 17257. [2020-10-26 21:23:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17257 states. [2020-10-26 21:23:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17257 states to 17257 states and 22474 transitions. [2020-10-26 21:23:37,540 INFO L78 Accepts]: Start accepts. Automaton has 17257 states and 22474 transitions. Word has length 1728 [2020-10-26 21:23:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:23:37,542 INFO L481 AbstractCegarLoop]: Abstraction has 17257 states and 22474 transitions. [2020-10-26 21:23:37,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:23:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17257 states and 22474 transitions. [2020-10-26 21:23:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-26 21:23:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:23:37,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:23:37,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:23:37,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:23:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:23:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1031119243, now seen corresponding path program 1 times [2020-10-26 21:23:37,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:23:37,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499753966] [2020-10-26 21:23:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:23:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:43,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:43,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1764 [2020-10-26 21:23:43,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:23:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-26 21:23:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:23:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:23:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 21:23:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:43,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:23:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:43,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:43,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:23:43,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:23:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:23:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:43,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:23:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:23:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 21:23:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:23:45,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499753966] [2020-10-26 21:23:45,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:23:45,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:23:45,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305480052] [2020-10-26 21:23:45,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:23:45,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:23:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:23:45,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:23:45,509 INFO L87 Difference]: Start difference. First operand 17257 states and 22474 transitions. Second operand 7 states. [2020-10-26 21:24:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:24:14,762 INFO L93 Difference]: Finished difference Result 45736 states and 61649 transitions. [2020-10-26 21:24:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:24:14,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1738 [2020-10-26 21:24:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:24:14,865 INFO L225 Difference]: With dead ends: 45736 [2020-10-26 21:24:14,866 INFO L226 Difference]: Without dead ends: 28485 [2020-10-26 21:24:14,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:24:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28485 states. [2020-10-26 21:24:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28485 to 28409. [2020-10-26 21:24:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28409 states. [2020-10-26 21:24:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28409 states to 28409 states and 36223 transitions. [2020-10-26 21:24:15,542 INFO L78 Accepts]: Start accepts. Automaton has 28409 states and 36223 transitions. Word has length 1738 [2020-10-26 21:24:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:24:15,542 INFO L481 AbstractCegarLoop]: Abstraction has 28409 states and 36223 transitions. [2020-10-26 21:24:15,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:24:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 28409 states and 36223 transitions. [2020-10-26 21:24:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1820 [2020-10-26 21:24:15,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:24:15,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:24:15,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:24:15,651 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:24:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:24:15,653 INFO L82 PathProgramCache]: Analyzing trace with hash 429144373, now seen corresponding path program 1 times [2020-10-26 21:24:15,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:24:15,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876244621] [2020-10-26 21:24:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:24:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:21,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:21,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1845 [2020-10-26 21:24:21,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:24:21,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 21:24:21,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 21:24:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:24:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1836 [2020-10-26 21:24:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:24:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:22,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:24:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:24:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:24:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:24:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:24:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:24:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:22,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:24:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:24:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 21:24:22,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:24:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:24:25,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876244621] [2020-10-26 21:24:25,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:24:25,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:24:25,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311916836] [2020-10-26 21:24:25,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:24:25,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:24:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:24:25,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:24:25,211 INFO L87 Difference]: Start difference. First operand 28409 states and 36223 transitions. Second operand 6 states.