/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:11:15,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:11:15,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:11:15,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:11:15,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:11:15,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:11:15,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:11:15,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:11:15,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:11:15,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:11:15,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:11:15,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:11:15,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:11:15,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:11:15,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:11:15,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:11:15,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:11:15,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:11:15,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:11:15,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:11:15,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:11:15,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:11:15,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:11:15,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:11:15,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:11:15,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:11:15,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:11:15,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:11:15,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:11:15,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:11:15,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:11:15,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:11:15,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:11:15,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:11:15,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:11:15,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:11:15,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:11:15,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:11:15,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:11:15,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:11:15,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:11:15,930 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 16:11:15,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:11:15,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:11:15,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:11:15,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:11:15,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:11:15,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:11:15,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:11:15,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:11:15,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:11:15,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:11:15,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:11:15,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:11:15,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:11:15,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:11:15,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:11:15,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:11:15,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:11:15,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:11:15,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:11:15,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:11:15,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:11:15,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:11:15,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:11:15,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:11:15,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:11:15,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:11:15,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:11:15,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:11:15,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:11:15,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:11:16,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:11:16,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:11:16,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:11:16,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:11:16,495 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:11:16,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17.c [2020-10-27 16:11:16,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925130197/6bb533b916d94f49b5f0a036a07f09f3/FLAGa080fee6e [2020-10-27 16:11:17,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:11:17,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label17.c [2020-10-27 16:11:17,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925130197/6bb533b916d94f49b5f0a036a07f09f3/FLAGa080fee6e [2020-10-27 16:11:18,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925130197/6bb533b916d94f49b5f0a036a07f09f3 [2020-10-27 16:11:18,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:11:18,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:11:18,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:11:18,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:11:18,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:11:18,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:11:18" (1/1) ... [2020-10-27 16:11:18,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495092f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:18, skipping insertion in model container [2020-10-27 16:11:18,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:11:18" (1/1) ... [2020-10-27 16:11:18,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:11:18,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:11:20,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:11:20,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:11:21,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:11:22,040 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:11:22,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22 WrapperNode [2020-10-27 16:11:22,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:11:22,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:11:22,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:11:22,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:11:22,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (1/1) ... [2020-10-27 16:11:22,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:11:22,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:11:22,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:11:22,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:11:22,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (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 16:11:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:11:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:11:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:11:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:11:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:11:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:11:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:11:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:11:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:11:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:11:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:11:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:11:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:11:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:11:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:11:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:11:31,079 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:11:31,080 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:11:31,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:11:31 BoogieIcfgContainer [2020-10-27 16:11:31,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:11:31,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:11:31,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:11:31,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:11:31,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:11:18" (1/3) ... [2020-10-27 16:11:31,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314ff785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:11:31, skipping insertion in model container [2020-10-27 16:11:31,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:22" (2/3) ... [2020-10-27 16:11:31,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314ff785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:11:31, skipping insertion in model container [2020-10-27 16:11:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:11:31" (3/3) ... [2020-10-27 16:11:31,100 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label17.c [2020-10-27 16:11:31,112 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:11:31,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:11:31,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:11:31,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:11:31,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:11:31,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:11:31,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:11:31,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:11:31,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:11:31,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:11:31,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:11:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:11:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-27 16:11:31,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:11:31,369 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] [2020-10-27 16:11:31,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:11:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:11:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash 459314935, now seen corresponding path program 1 times [2020-10-27 16:11:31,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:11:31,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342919129] [2020-10-27 16:11:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:11:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:37,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:37,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-27 16:11:37,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-27 16:11:37,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:11:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:11:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1707 [2020-10-27 16:11:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:11:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:11:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:11:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:11:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:11:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:11:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:11:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:11:42,590 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 16:11:42,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342919129] [2020-10-27 16:11:42,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:11:42,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:11:42,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932298823] [2020-10-27 16:11:42,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:11:42,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:11:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:11:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:11:42,623 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:12:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:12:03,340 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-27 16:12:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:12:03,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692 [2020-10-27 16:12:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:12:03,410 INFO L225 Difference]: With dead ends: 6315 [2020-10-27 16:12:03,411 INFO L226 Difference]: Without dead ends: 4025 [2020-10-27 16:12:03,428 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 [2020-10-27 16:12:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-27 16:12:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-27 16:12:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-27 16:12:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-27 16:12:03,713 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1692 [2020-10-27 16:12:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:12:03,721 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-27 16:12:03,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:12:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-27 16:12:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-27 16:12:03,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:12:03,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:03,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:12:03,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:12:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:12:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1921694451, now seen corresponding path program 1 times [2020-10-27 16:12:03,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:12:03,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083814085] [2020-10-27 16:12:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:12:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:09,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-27 16:12:09,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:12:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-27 16:12:09,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:12:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:12:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1704 [2020-10-27 16:12:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:12:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:12:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:10,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:10,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:12:10,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:12:10,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:12:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:12:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:12:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:12:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:12:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 16:12:10,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:12:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:12:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:12:13,648 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 16:12:13,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083814085] [2020-10-27 16:12:13,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:12:13,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:12:13,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230843626] [2020-10-27 16:12:13,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:12:13,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:12:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:12:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:12:13,655 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states. [2020-10-27 16:12:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:12:48,640 INFO L93 Difference]: Finished difference Result 15129 states and 24816 transitions. [2020-10-27 16:12:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:12:48,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1701 [2020-10-27 16:12:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:12:48,711 INFO L225 Difference]: With dead ends: 15129 [2020-10-27 16:12:48,712 INFO L226 Difference]: Without dead ends: 11137 [2020-10-27 16:12:48,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:12:48,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2020-10-27 16:12:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 11077. [2020-10-27 16:12:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11077 states. [2020-10-27 16:12:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 16128 transitions. [2020-10-27 16:12:49,101 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 16128 transitions. Word has length 1701 [2020-10-27 16:12:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:12:49,104 INFO L481 AbstractCegarLoop]: Abstraction has 11077 states and 16128 transitions. [2020-10-27 16:12:49,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:12:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 16128 transitions. [2020-10-27 16:12:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-27 16:12:49,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:12:49,276 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-27 16:12:49,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:12:49,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:12:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:12:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash 36902761, now seen corresponding path program 1 times [2020-10-27 16:12:49,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:12:49,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292242582] [2020-10-27 16:12:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:12:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:54,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:54,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-27 16:12:54,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:12:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5249 [2020-10-27 16:12:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 16:12:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 16:12:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1692 [2020-10-27 16:12:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:12:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:12:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:12:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:12:57,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:12:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:12:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:12:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:12:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:57,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:12:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:12:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:12:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 16:12:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:13:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:13:20,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292242582] [2020-10-27 16:13:20,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:13:20,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:13:20,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68542314] [2020-10-27 16:13:20,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:13:20,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:13:20,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:13:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:13:20,068 INFO L87 Difference]: Start difference. First operand 11077 states and 16128 transitions. Second operand 6 states. [2020-10-27 16:13:20,420 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:13:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:13:56,150 INFO L93 Difference]: Finished difference Result 34327 states and 51994 transitions. [2020-10-27 16:13:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:13:56,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1707 [2020-10-27 16:13:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:13:56,248 INFO L225 Difference]: With dead ends: 34327 [2020-10-27 16:13:56,248 INFO L226 Difference]: Without dead ends: 21581 [2020-10-27 16:13:56,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:13:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21581 states. [2020-10-27 16:13:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21581 to 21577. [2020-10-27 16:13:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21577 states. [2020-10-27 16:13:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 29319 transitions. [2020-10-27 16:13:56,879 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 29319 transitions. Word has length 1707 [2020-10-27 16:13:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:13:56,883 INFO L481 AbstractCegarLoop]: Abstraction has 21577 states and 29319 transitions. [2020-10-27 16:13:56,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:13:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 29319 transitions. [2020-10-27 16:13:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-27 16:13:56,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:13:56,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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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] [2020-10-27 16:13:56,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:13:56,977 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:13:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:13:56,979 INFO L82 PathProgramCache]: Analyzing trace with hash -215744886, now seen corresponding path program 1 times [2020-10-27 16:13:56,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:13:56,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107131474] [2020-10-27 16:13:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:13:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:13:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:13:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:13:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-27 16:14:02,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:14:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 16:14:02,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 16:14:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 16:14:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1248 [2020-10-27 16:14:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:14:08,861 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-27 16:14:09,022 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-27 16:14:09,188 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-27 16:14:09,331 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 16:14:09,466 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 16:14:09,598 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 16:14:09,799 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-10-27 16:14:10,024 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-27 16:14:10,354 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2020-10-27 16:14:10,582 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 43 [2020-10-27 16:14:10,787 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-27 16:14:11,021 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-27 16:14:11,434 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2020-10-27 16:14:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:14:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:11,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:14:11,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:14:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:14:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:14:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:14:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:14:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:14:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:14:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:12,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 16:14:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:14:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:14:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:14:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:14:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:14:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:14:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 16:14:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:14:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:14:12,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:14:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 16:14:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:14:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:14:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:14:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:14:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:14:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:14:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:14:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 16:14:34,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107131474] [2020-10-27 16:14:34,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:14:34,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 16:14:34,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177269200] [2020-10-27 16:14:34,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 16:14:34,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:14:34,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 16:14:34,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-10-27 16:14:34,642 INFO L87 Difference]: Start difference. First operand 21577 states and 29319 transitions. Second operand 24 states. [2020-10-27 16:14:36,004 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:14:36,265 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:14:48,211 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 16:14:49,648 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:14:49,902 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 114