/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem19_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:17:13,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:17:13,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:17:13,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:17:13,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:17:13,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:17:13,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:17:13,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:17:13,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:17:13,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:17:13,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:17:13,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:17:13,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:17:13,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:17:13,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:17:13,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:17:13,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:17:13,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:17:13,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:17:13,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:17:13,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:17:13,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:17:13,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:17:13,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:17:13,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:17:13,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:17:13,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:17:13,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:17:13,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:17:13,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:17:13,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:17:13,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:17:13,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:17:13,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:17:13,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:17:13,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:17:13,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:17:13,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:17:13,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:17:13,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:17:13,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:17:13,718 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 [2020-10-28 14:17:13,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:17:13,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:17:13,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:17:13,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:17:13,785 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:17:13,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:17:13,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:17:13,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:17:13,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:17:13,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:17:13,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:17:13,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:17:13,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:17:13,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:17:13,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:17:13,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:17:13,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:17:13,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:17:13,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:17:13,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:17:13,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:17:13,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:17:13,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:17:13,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:17:13,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:17:13,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:17:13,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:17:13,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:17:13,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:17:13,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:17:14,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:17:14,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:17:14,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:17:14,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:17:14,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:17:14,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-28 14:17:14,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351368689/d4d1dfff48e04506b2e80de2df6698dd/FLAG4e6263850 [2020-10-28 14:17:15,469 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:17:15,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-28 14:17:15,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351368689/d4d1dfff48e04506b2e80de2df6698dd/FLAG4e6263850 [2020-10-28 14:17:15,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351368689/d4d1dfff48e04506b2e80de2df6698dd [2020-10-28 14:17:15,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:17:15,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:17:15,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:17:15,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:17:15,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:17:15,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:17:15" (1/1) ... [2020-10-28 14:17:15,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3563ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:15, skipping insertion in model container [2020-10-28 14:17:15,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:17:15" (1/1) ... [2020-10-28 14:17:15,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:17:16,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:17:18,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:17:18,337 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:17:19,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:17:19,446 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:17:19,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19 WrapperNode [2020-10-28 14:17:19,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:17:19,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:17:19,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:17:19,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:17:19,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:19,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:19,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:19,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:19,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:20,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:20,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (1/1) ... [2020-10-28 14:17:20,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:17:20,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:17:20,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:17:20,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:17:20,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (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 [2020-10-28 14:17:20,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:17:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:17:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:17:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:17:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:17:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:17:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:17:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:17:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:17:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:17:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:17:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:17:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:17:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:17:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:17:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:17:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:17:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:17:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:17:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:17:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:17:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:17:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:17:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:17:34,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:17:34,189 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:17:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:17:34 BoogieIcfgContainer [2020-10-28 14:17:34,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:17:34,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:17:34,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:17:34,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:17:34,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:17:15" (1/3) ... [2020-10-28 14:17:34,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec61d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:17:34, skipping insertion in model container [2020-10-28 14:17:34,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:17:19" (2/3) ... [2020-10-28 14:17:34,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec61d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:17:34, skipping insertion in model container [2020-10-28 14:17:34,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:17:34" (3/3) ... [2020-10-28 14:17:34,206 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label54.c [2020-10-28 14:17:34,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:17:34,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:17:34,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:17:34,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:17:34,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:17:34,297 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:17:34,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:17:34,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:17:34,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:17:34,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:17:34,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:17:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:17:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 14:17:34,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:34,373 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] [2020-10-28 14:17:34,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1139942070, now seen corresponding path program 1 times [2020-10-28 14:17:34,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:34,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290799599] [2020-10-28 14:17:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:35,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:35,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-28 14:17:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:35,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:17:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:35,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:17:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:35,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:35,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290799599] [2020-10-28 14:17:35,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:35,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:17:35,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017373779] [2020-10-28 14:17:35,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:17:35,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:17:35,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:17:35,585 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-28 14:18:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:18:13,549 INFO L93 Difference]: Finished difference Result 6580 states and 12489 transitions. [2020-10-28 14:18:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:18:13,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-28 14:18:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:18:13,622 INFO L225 Difference]: With dead ends: 6580 [2020-10-28 14:18:13,622 INFO L226 Difference]: Without dead ends: 4731 [2020-10-28 14:18:13,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:18:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-10-28 14:18:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4643. [2020-10-28 14:18:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4643 states. [2020-10-28 14:18:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 7845 transitions. [2020-10-28 14:18:13,931 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 7845 transitions. Word has length 71 [2020-10-28 14:18:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:18:13,932 INFO L481 AbstractCegarLoop]: Abstraction has 4643 states and 7845 transitions. [2020-10-28 14:18:13,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:18:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 7845 transitions. [2020-10-28 14:18:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 14:18:13,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:18:13,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:18:13,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:18:13,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:18:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:18:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -216396743, now seen corresponding path program 1 times [2020-10-28 14:18:13,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:18:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508070084] [2020-10-28 14:18:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:18:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 14:18:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:18:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-28 14:18:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:18:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:18:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:18:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:18:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:18:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:15,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:15,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:18:15,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:18:15,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:15,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:18:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:18:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:18:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:18:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:18:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:18:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 14:18:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:18:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:18:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:18:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:18:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:18:15,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508070084] [2020-10-28 14:18:15,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:18:15,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:18:15,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849165083] [2020-10-28 14:18:15,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:18:15,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:18:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:18:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:18:15,752 INFO L87 Difference]: Start difference. First operand 4643 states and 7845 transitions. Second operand 7 states. [2020-10-28 14:18:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:18:59,159 INFO L93 Difference]: Finished difference Result 13998 states and 23878 transitions. [2020-10-28 14:18:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:18:59,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-28 14:18:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:18:59,219 INFO L225 Difference]: With dead ends: 13998 [2020-10-28 14:18:59,219 INFO L226 Difference]: Without dead ends: 9361 [2020-10-28 14:18:59,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:18:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2020-10-28 14:18:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 9209. [2020-10-28 14:18:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9209 states. [2020-10-28 14:18:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9209 states to 9209 states and 13526 transitions. [2020-10-28 14:18:59,570 INFO L78 Accepts]: Start accepts. Automaton has 9209 states and 13526 transitions. Word has length 147 [2020-10-28 14:18:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:18:59,573 INFO L481 AbstractCegarLoop]: Abstraction has 9209 states and 13526 transitions. [2020-10-28 14:18:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:18:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states and 13526 transitions. [2020-10-28 14:18:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 14:18:59,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:18:59,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:18:59,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:18:59,591 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:18:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:18:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1991423723, now seen corresponding path program 1 times [2020-10-28 14:18:59,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:18:59,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187361292] [2020-10-28 14:18:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:18:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 14:19:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:19:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3072 [2020-10-28 14:19:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:19:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:19:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 14:19:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:19:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:02,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:19:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:02,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:03,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:03,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 14:19:03,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 14:19:03,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:03,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:19:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:19:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 14:19:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:03,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187361292] [2020-10-28 14:19:03,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:03,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:19:03,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082741469] [2020-10-28 14:19:03,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:19:03,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:19:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:19:03,259 INFO L87 Difference]: Start difference. First operand 9209 states and 13526 transitions. Second operand 7 states. [2020-10-28 14:19:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:19:55,493 INFO L93 Difference]: Finished difference Result 27625 states and 42189 transitions. [2020-10-28 14:19:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:19:55,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-28 14:19:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:19:55,597 INFO L225 Difference]: With dead ends: 27625 [2020-10-28 14:19:55,600 INFO L226 Difference]: Without dead ends: 18422 [2020-10-28 14:19:55,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:19:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18422 states. [2020-10-28 14:19:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18422 to 18127. [2020-10-28 14:19:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18127 states. [2020-10-28 14:19:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18127 states to 18127 states and 24376 transitions. [2020-10-28 14:19:56,318 INFO L78 Accepts]: Start accepts. Automaton has 18127 states and 24376 transitions. Word has length 157 [2020-10-28 14:19:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:19:56,321 INFO L481 AbstractCegarLoop]: Abstraction has 18127 states and 24376 transitions. [2020-10-28 14:19:56,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:19:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 18127 states and 24376 transitions. [2020-10-28 14:19:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 14:19:56,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:56,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 14:19:56,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:19:56,338 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash -972278912, now seen corresponding path program 1 times [2020-10-28 14:19:56,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:56,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419782179] [2020-10-28 14:19:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:59,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:59,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 14:19:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:19:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2851 [2020-10-28 14:19:59,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:59,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 14:19:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:59,377 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:19:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:19:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:19:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:59,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:59,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 14:19:59,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 14:19:59,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:59,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 14:19:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 14:19:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:19:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 14:19:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:19:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 14:19:59,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419782179] [2020-10-28 14:19:59,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:19:59,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:19:59,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110659845] [2020-10-28 14:19:59,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:19:59,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:19:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:19:59,725 INFO L87 Difference]: Start difference. First operand 18127 states and 24376 transitions. Second operand 5 states. [2020-10-28 14:20:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:20:41,607 INFO L93 Difference]: Finished difference Result 50458 states and 69656 transitions. [2020-10-28 14:20:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:20:41,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-28 14:20:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:20:41,727 INFO L225 Difference]: With dead ends: 50458 [2020-10-28 14:20:41,728 INFO L226 Difference]: Without dead ends: 32337 [2020-10-28 14:20:41,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:20:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32337 states. [2020-10-28 14:20:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32337 to 32297. [2020-10-28 14:20:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32297 states. [2020-10-28 14:20:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32297 states to 32297 states and 41142 transitions. [2020-10-28 14:20:42,607 INFO L78 Accepts]: Start accepts. Automaton has 32297 states and 41142 transitions. Word has length 234 [2020-10-28 14:20:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:20:42,609 INFO L481 AbstractCegarLoop]: Abstraction has 32297 states and 41142 transitions. [2020-10-28 14:20:42,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:20:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 32297 states and 41142 transitions. [2020-10-28 14:20:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 14:20:42,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:20:42,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 14:20:42,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:20:42,616 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:20:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:20:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -379430249, now seen corresponding path program 1 times [2020-10-28 14:20:42,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:20:42,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909232107] [2020-10-28 14:20:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:20:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:47,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:47,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 14:20:47,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:20:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 14:20:47,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:47,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:20:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:20:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 14:20:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:20:47,878 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:20:47,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:20:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:47,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:20:47,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:20:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:20:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:20:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:20:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 14:20:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 14:20:48,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:20:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:20:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 14:20:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:20:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 14:20:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:48,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:48,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 14:20:48,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:20:48,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:48,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:20:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 14:20:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:20:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:20:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 126 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:20:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909232107] [2020-10-28 14:20:48,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:20:48,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:20:48,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077830241] [2020-10-28 14:20:48,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:20:48,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:20:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:20:48,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:20:48,481 INFO L87 Difference]: Start difference. First operand 32297 states and 41142 transitions. Second operand 7 states. [2020-10-28 14:20:48,644 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68