/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:13:57,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:13:57,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:13:57,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:13:57,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:13:57,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:13:57,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:13:57,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:13:57,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:13:57,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:13:57,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:13:57,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:13:57,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:13:57,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:13:57,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:13:57,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:13:57,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:13:57,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:13:57,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:13:57,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:13:57,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:13:57,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:13:57,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:13:57,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:13:57,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:13:57,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:13:57,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:13:57,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:13:57,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:13:57,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:13:57,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:13:57,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:13:57,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:13:57,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:13:57,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:13:57,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:13:57,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:13:57,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:13:57,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:13:57,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:13:57,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:13:57,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:13:58,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:13:58,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:13:58,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:13:58,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:13:58,022 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:13:58,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:13:58,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:13:58,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:13:58,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:13:58,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:13:58,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:13:58,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:13:58,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:13:58,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:13:58,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:13:58,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:13:58,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:13:58,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:13:58,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:13:58,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:13:58,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:13:58,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:13:58,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:13:58,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:13:58,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:13:58,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:13:58,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:13:58,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:13:58,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:13:58,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:13:58,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:13:58,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:13:58,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:13:58,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:13:58,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:13:58,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label28.c [2020-10-27 16:13:58,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f9b956d/333c97a9730249b2ab9cd1f0698b3a80/FLAGb83d4f3b6 [2020-10-27 16:13:59,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:13:59,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label28.c [2020-10-27 16:14:00,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f9b956d/333c97a9730249b2ab9cd1f0698b3a80/FLAGb83d4f3b6 [2020-10-27 16:14:00,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f9b956d/333c97a9730249b2ab9cd1f0698b3a80 [2020-10-27 16:14:00,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:14:00,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:14:00,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:14:00,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:14:00,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:14:00,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:00" (1/1) ... [2020-10-27 16:14:00,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170031dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:00, skipping insertion in model container [2020-10-27 16:14:00,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:00" (1/1) ... [2020-10-27 16:14:00,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:14:00,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:14:02,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:14:02,833 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:14:04,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:14:04,272 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:14:04,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04 WrapperNode [2020-10-27 16:14:04,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:14:04,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:14:04,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:14:04,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:14:04,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... [2020-10-27 16:14:04,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:14:04,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:14:04,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:14:04,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:14:04,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:14:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:14:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:14:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:14:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:14:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:14:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:14:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:14:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:14:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:14:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:14:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:14:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:14:14,914 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:14:14,915 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:14:14,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:14 BoogieIcfgContainer [2020-10-27 16:14:14,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:14:14,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:14:14,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:14:14,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:14:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:14:00" (1/3) ... [2020-10-27 16:14:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec3e2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:14, skipping insertion in model container [2020-10-27 16:14:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:04" (2/3) ... [2020-10-27 16:14:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec3e2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:14, skipping insertion in model container [2020-10-27 16:14:14,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:14" (3/3) ... [2020-10-27 16:14:14,929 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label28.c [2020-10-27 16:14:14,941 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:14:14,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:14:14,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:14:14,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:14:15,000 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:14:15,000 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:14:15,000 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:14:15,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:14:15,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:14:15,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:14:15,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:14:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:14:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-27 16:14:15,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:14:15,224 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] [2020-10-27 16:14:15,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:14:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:14:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1771967393, now seen corresponding path program 1 times [2020-10-27 16:14:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:14:15,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854204546] [2020-10-27 16:14:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:14:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:21,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1726 [2020-10-27 16:14:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:14:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 16:14:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:14:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:14:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1717 [2020-10-27 16:14:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:14:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:14:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:23,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:23,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:14:23,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:14:23,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:14:23,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:14:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:14:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:14:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:14:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:14:26,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854204546] [2020-10-27 16:14:26,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:14:26,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:14:26,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035087332] [2020-10-27 16:14:26,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:14:26,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:14:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:14:26,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:14:26,579 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:14:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:14:57,805 INFO L93 Difference]: Finished difference Result 8116 states and 15421 transitions. [2020-10-27 16:14:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:14:57,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1702 [2020-10-27 16:14:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:14:57,888 INFO L225 Difference]: With dead ends: 8116 [2020-10-27 16:14:57,888 INFO L226 Difference]: Without dead ends: 5822 [2020-10-27 16:14:57,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:14:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2020-10-27 16:14:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5770. [2020-10-27 16:14:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2020-10-27 16:14:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 10073 transitions. [2020-10-27 16:14:58,228 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 10073 transitions. Word has length 1702 [2020-10-27 16:14:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:14:58,234 INFO L481 AbstractCegarLoop]: Abstraction has 5770 states and 10073 transitions. [2020-10-27 16:14:58,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:14:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 10073 transitions. [2020-10-27 16:14:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-27 16:14:58,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:14:58,410 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-27 16:14:58,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:14:58,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:14:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:14:58,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1453081947, now seen corresponding path program 1 times [2020-10-27 16:14:58,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:14:58,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331572729] [2020-10-27 16:14:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:14:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-27 16:15:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:15:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-27 16:15:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:15:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:15:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1714 [2020-10-27 16:15:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:15:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:15:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:05,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:15:05,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:15:05,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:15:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:15:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:05,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:15:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:05,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:05,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:15:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:15:05,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:15:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:15:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:15:08,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331572729] [2020-10-27 16:15:08,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:15:08,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:15:08,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969112232] [2020-10-27 16:15:08,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:15:08,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:15:08,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:15:08,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:15:08,349 INFO L87 Difference]: Start difference. First operand 5770 states and 10073 transitions. Second operand 5 states. [2020-10-27 16:15:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:15:35,464 INFO L93 Difference]: Finished difference Result 16874 states and 29857 transitions. [2020-10-27 16:15:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:15:35,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1711 [2020-10-27 16:15:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:15:35,533 INFO L225 Difference]: With dead ends: 16874 [2020-10-27 16:15:35,533 INFO L226 Difference]: Without dead ends: 11110 [2020-10-27 16:15:35,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:15:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11110 states. [2020-10-27 16:15:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11110 to 11100. [2020-10-27 16:15:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11100 states. [2020-10-27 16:15:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11100 states to 11100 states and 16978 transitions. [2020-10-27 16:15:35,921 INFO L78 Accepts]: Start accepts. Automaton has 11100 states and 16978 transitions. Word has length 1711 [2020-10-27 16:15:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:15:35,925 INFO L481 AbstractCegarLoop]: Abstraction has 11100 states and 16978 transitions. [2020-10-27 16:15:35,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:15:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11100 states and 16978 transitions. [2020-10-27 16:15:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2020-10-27 16:15:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:15:35,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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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] [2020-10-27 16:15:35,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:15:35,986 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:15:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:15:35,987 INFO L82 PathProgramCache]: Analyzing trace with hash -632891828, now seen corresponding path program 1 times [2020-10-27 16:15:35,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:15:35,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505846323] [2020-10-27 16:15:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:15:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1754 [2020-10-27 16:15:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:15:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 16:15:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:15:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:15:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-27 16:15:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:43,783 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:15:44,040 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:15:45,049 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-27 16:15:45,347 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-27 16:15:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:15:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:15:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:15:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:15:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:15:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:15:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:15:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:15:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:15:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:15:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:15:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:15:45,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:15:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:15:45,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:15:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:15:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:15:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:15:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:16:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 16:16:05,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505846323] [2020-10-27 16:16:05,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:16:05,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:16:05,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402974735] [2020-10-27 16:16:05,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:16:05,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:16:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:16:05,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:16:05,821 INFO L87 Difference]: Start difference. First operand 11100 states and 16978 transitions. Second operand 23 states. [2020-10-27 16:16:06,336 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 16:16:06,561 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:16:07,568 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:16:13,289 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:16:13,511 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:16:20,389 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:16:20,622 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:16:24,286 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 16:16:24,537 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:16:27,869 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:16:28,066 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:16:34,748 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:16:34,969 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:16:36,753 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 16:16:38,665 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2020-10-27 16:16:42,381 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:16:42,577 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:16:43,787 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:16:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:16:52,232 INFO L93 Difference]: Finished difference Result 23487 states and 36611 transitions. [2020-10-27 16:16:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 16:16:52,234 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1726 [2020-10-27 16:16:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:16:52,288 INFO L225 Difference]: With dead ends: 23487 [2020-10-27 16:16:52,288 INFO L226 Difference]: Without dead ends: 12393 [2020-10-27 16:16:52,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 16:16:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2020-10-27 16:16:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 12388. [2020-10-27 16:16:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12388 states. [2020-10-27 16:16:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12388 states to 12388 states and 18308 transitions. [2020-10-27 16:16:52,620 INFO L78 Accepts]: Start accepts. Automaton has 12388 states and 18308 transitions. Word has length 1726 [2020-10-27 16:16:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:16:52,622 INFO L481 AbstractCegarLoop]: Abstraction has 12388 states and 18308 transitions. [2020-10-27 16:16:52,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 16:16:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 12388 states and 18308 transitions. [2020-10-27 16:16:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2020-10-27 16:16:52,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:16:52,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:16:52,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:16:52,677 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:16:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:16:52,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1160607504, now seen corresponding path program 1 times [2020-10-27 16:16:52,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:16:52,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387725349] [2020-10-27 16:16:52,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:16:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1755 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1244 [2020-10-27 16:16:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:17:00,474 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:17:00,598 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:17:00,755 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-27 16:17:00,900 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-27 16:17:01,079 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-27 16:17:01,832 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-27 16:17:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:17:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:17:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:17:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:17:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:17:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:17:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:02,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:17:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:17:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:17:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:17:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:17:20,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387725349] [2020-10-27 16:17:20,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:17:20,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:17:20,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627334696] [2020-10-27 16:17:20,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:17:20,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:17:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:17:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:17:20,061 INFO L87 Difference]: Start difference. First operand 12388 states and 18308 transitions. Second operand 23 states. [2020-10-27 16:17:20,886 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:17:21,117 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:17:22,993 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:17:31,361 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:17:31,623 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:17:42,052 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:17:42,311 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 103