/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/Problem13_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:36:06,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:36:06,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:36:06,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:36:06,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:36:06,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:36:06,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:36:06,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:36:06,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:36:06,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:36:06,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:36:06,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:36:06,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:36:06,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:36:06,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:36:06,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:36:06,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:36:06,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:36:06,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:36:06,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:36:06,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:36:06,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:36:06,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:36:06,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:36:06,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:36:06,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:36:06,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:36:06,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:36:06,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:36:06,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:36:06,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:36:06,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:36:06,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:36:06,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:36:06,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:36:06,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:36:06,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:36:06,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:36:06,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:36:06,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:36:06,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:36:06,445 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 12:36:06,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:36:06,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:36:06,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:36:06,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:36:06,498 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:36:06,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:36:06,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:36:06,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:36:06,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:36:06,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:36:06,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:36:06,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:36:06,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:36:06,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:36:06,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:36:06,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:36:06,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:36:06,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:36:06,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:36:06,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:36:06,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:36:06,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:36:06,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:36:06,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:36:06,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:36:06,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:36:06,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:36:06,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:36:06,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:36:06,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:36:06,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:36:06,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:36:06,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:36:06,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:36:06,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:36:06,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label28.c [2020-10-28 12:36:07,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1e09f46/243f59c4fc10404992bc0aa58ff60a63/FLAG4fedf310c [2020-10-28 12:36:08,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:36:08,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label28.c [2020-10-28 12:36:08,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1e09f46/243f59c4fc10404992bc0aa58ff60a63/FLAG4fedf310c [2020-10-28 12:36:08,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1e09f46/243f59c4fc10404992bc0aa58ff60a63 [2020-10-28 12:36:08,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:36:08,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:36:08,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:36:08,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:36:08,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:36:08,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:08" (1/1) ... [2020-10-28 12:36:08,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e12fac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:08, skipping insertion in model container [2020-10-28 12:36:08,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:08" (1/1) ... [2020-10-28 12:36:08,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:36:08,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:36:10,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:36:10,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:36:11,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:36:11,273 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:36:11,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11 WrapperNode [2020-10-28 12:36:11,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:36:11,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:36:11,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:36:11,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:36:11,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (1/1) ... [2020-10-28 12:36:11,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:36:11,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:36:11,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:36:11,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:36:11,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (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 12:36:11,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:36:11,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:36:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:36:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:36:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:36:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:36:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:36:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:36:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:36:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:36:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:36:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:36:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:36:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:36:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:36:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:36:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:36:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:36:11,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:36:23,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:36:23,911 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:36:23,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:23 BoogieIcfgContainer [2020-10-28 12:36:23,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:36:23,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:36:23,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:36:23,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:36:23,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:36:08" (1/3) ... [2020-10-28 12:36:23,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d2fef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:23, skipping insertion in model container [2020-10-28 12:36:23,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:11" (2/3) ... [2020-10-28 12:36:23,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d2fef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:23, skipping insertion in model container [2020-10-28 12:36:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:23" (3/3) ... [2020-10-28 12:36:23,930 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label28.c [2020-10-28 12:36:23,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:36:23,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:36:23,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:36:24,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:36:24,012 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:36:24,013 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:36:24,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:36:24,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:36:24,013 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:36:24,013 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:36:24,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:36:24,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:36:24,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 12:36:24,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:36:24,062 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] [2020-10-28 12:36:24,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:36:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:36:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash 294988666, now seen corresponding path program 1 times [2020-10-28 12:36:24,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:36:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062234635] [2020-10-28 12:36:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:36:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:24,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 12:36:24,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-28 12:36:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:24,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:36:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:36:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 12:36:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:36:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:36:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:36:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:36:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:36:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:25,081 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 12:36:25,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062234635] [2020-10-28 12:36:25,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:36:25,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:36:25,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033227360] [2020-10-28 12:36:25,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:36:25,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:36:25,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:36:25,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:36:25,116 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:36:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:36:45,673 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-28 12:36:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:36:45,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 12:36:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:36:45,723 INFO L225 Difference]: With dead ends: 3112 [2020-10-28 12:36:45,723 INFO L226 Difference]: Without dead ends: 1904 [2020-10-28 12:36:45,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:36:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-28 12:36:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-28 12:36:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-28 12:36:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-28 12:36:45,927 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 22 [2020-10-28 12:36:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:36:45,928 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-28 12:36:45,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:36:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-28 12:36:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 12:36:45,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:36:45,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:36:45,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:36:45,934 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:36:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:36:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1678455906, now seen corresponding path program 1 times [2020-10-28 12:36:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:36:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238224853] [2020-10-28 12:36:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:36:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:46,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:46,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:36:46,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-28 12:36:46,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:46,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:36:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:36:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:36:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:36:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:36:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:36:46,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:36:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:36:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:36:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:36:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:36:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:46,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:46,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:36:46,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:36:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:36:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:36:47,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238224853] [2020-10-28 12:36:47,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:36:47,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:36:47,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722477706] [2020-10-28 12:36:47,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:36:47,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:36:47,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:36:47,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:36:47,097 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 7 states. [2020-10-28 12:37:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:17,359 INFO L93 Difference]: Finished difference Result 5566 states and 8578 transitions. [2020-10-28 12:37:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:37:17,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 12:37:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:17,388 INFO L225 Difference]: With dead ends: 5566 [2020-10-28 12:37:17,389 INFO L226 Difference]: Without dead ends: 3688 [2020-10-28 12:37:17,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:37:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2020-10-28 12:37:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3552. [2020-10-28 12:37:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2020-10-28 12:37:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5022 transitions. [2020-10-28 12:37:17,532 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5022 transitions. Word has length 91 [2020-10-28 12:37:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:17,533 INFO L481 AbstractCegarLoop]: Abstraction has 3552 states and 5022 transitions. [2020-10-28 12:37:17,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:37:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5022 transitions. [2020-10-28 12:37:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 12:37:17,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:17,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:17,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:37:17,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:17,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1038431438, now seen corresponding path program 1 times [2020-10-28 12:37:17,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:17,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260829474] [2020-10-28 12:37:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:37:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:37:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-10-28 12:37:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:37:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:37:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:19,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:19,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:19,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:37:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 12:37:19,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:19,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:37:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:37:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:37:19,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260829474] [2020-10-28 12:37:19,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:19,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:37:19,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325341859] [2020-10-28 12:37:19,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:37:19,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:37:19,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:37:19,600 INFO L87 Difference]: Start difference. First operand 3552 states and 5022 transitions. Second operand 7 states. [2020-10-28 12:37:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:43,239 INFO L93 Difference]: Finished difference Result 8130 states and 11701 transitions. [2020-10-28 12:37:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:37:43,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-28 12:37:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:43,267 INFO L225 Difference]: With dead ends: 8130 [2020-10-28 12:37:43,267 INFO L226 Difference]: Without dead ends: 4584 [2020-10-28 12:37:43,278 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 12:37:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2020-10-28 12:37:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 4465. [2020-10-28 12:37:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2020-10-28 12:37:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 5745 transitions. [2020-10-28 12:37:43,432 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 5745 transitions. Word has length 99 [2020-10-28 12:37:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:43,436 INFO L481 AbstractCegarLoop]: Abstraction has 4465 states and 5745 transitions. [2020-10-28 12:37:43,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:37:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 5745 transitions. [2020-10-28 12:37:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 12:37:43,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:43,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:43,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:37:43,448 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1097771282, now seen corresponding path program 1 times [2020-10-28 12:37:43,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:43,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408482705] [2020-10-28 12:37:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:43,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:44,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:44,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 12:37:44,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-28 12:37:44,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:44,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:37:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:44,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:44,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:44,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:37:44,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:44,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:45,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:45,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:37:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 12:37:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:45,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:37:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:37:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:37:45,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408482705] [2020-10-28 12:37:45,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:45,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:37:45,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626995055] [2020-10-28 12:37:45,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:37:45,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:37:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:37:45,372 INFO L87 Difference]: Start difference. First operand 4465 states and 5745 transitions. Second operand 7 states. [2020-10-28 12:38:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:07,390 INFO L93 Difference]: Finished difference Result 10930 states and 14890 transitions. [2020-10-28 12:38:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:38:07,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-28 12:38:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:07,437 INFO L225 Difference]: With dead ends: 10930 [2020-10-28 12:38:07,437 INFO L226 Difference]: Without dead ends: 7274 [2020-10-28 12:38:07,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:38:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-28 12:38:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7133. [2020-10-28 12:38:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-28 12:38:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 8922 transitions. [2020-10-28 12:38:07,672 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 8922 transitions. Word has length 131 [2020-10-28 12:38:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:07,674 INFO L481 AbstractCegarLoop]: Abstraction has 7133 states and 8922 transitions. [2020-10-28 12:38:07,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:38:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 8922 transitions. [2020-10-28 12:38:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 12:38:07,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:07,677 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:38:07,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:38:07,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -298501670, now seen corresponding path program 1 times [2020-10-28 12:38:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:07,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218518256] [2020-10-28 12:38:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:10,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:10,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 12:38:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:38:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2728 [2020-10-28 12:38:10,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:10,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:38:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:10,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:10,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:10,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:38:10,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:10,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:38:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:38:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:10,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:38:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:38:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:38:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:11,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:11,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:38:11,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:38:11,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:11,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:38:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 12:38:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:38:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:38:11,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218518256] [2020-10-28 12:38:11,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:38:11,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:38:11,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526684787] [2020-10-28 12:38:11,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:38:11,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:38:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:38:11,371 INFO L87 Difference]: Start difference. First operand 7133 states and 8922 transitions. Second operand 7 states. [2020-10-28 12:38:13,365 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 12:38:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:37,158 INFO L93 Difference]: Finished difference Result 13820 states and 17505 transitions. [2020-10-28 12:38:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:38:37,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-28 12:38:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:37,196 INFO L225 Difference]: With dead ends: 13820 [2020-10-28 12:38:37,197 INFO L226 Difference]: Without dead ends: 7496 [2020-10-28 12:38:37,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:38:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2020-10-28 12:38:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7181. [2020-10-28 12:38:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7181 states. [2020-10-28 12:38:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7181 states to 7181 states and 8979 transitions. [2020-10-28 12:38:37,440 INFO L78 Accepts]: Start accepts. Automaton has 7181 states and 8979 transitions. Word has length 192 [2020-10-28 12:38:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:37,441 INFO L481 AbstractCegarLoop]: Abstraction has 7181 states and 8979 transitions. [2020-10-28 12:38:37,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:38:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7181 states and 8979 transitions. [2020-10-28 12:38:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 12:38:37,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:37,444 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:38:37,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:38:37,444 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:37,445 INFO L82 PathProgramCache]: Analyzing trace with hash -738160687, now seen corresponding path program 1 times [2020-10-28 12:38:37,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:37,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101657036] [2020-10-28 12:38:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:38,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 12:38:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:38:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-28 12:38:38,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:38,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:38:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:38:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:38,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:38:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:38,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:38:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:38:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:38:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:38:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:39,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:38:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:38:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:38:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:38:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 12:38:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:39,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:38:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 86 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:38:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101657036] [2020-10-28 12:38:39,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:38:39,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:38:39,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842431439] [2020-10-28 12:38:39,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:38:39,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:38:39,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:38:39,476 INFO L87 Difference]: Start difference. First operand 7181 states and 8979 transitions. Second operand 7 states. [2020-10-28 12:39:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:09,404 INFO L93 Difference]: Finished difference Result 17286 states and 22721 transitions. [2020-10-28 12:39:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:39:09,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-28 12:39:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:09,450 INFO L225 Difference]: With dead ends: 17286 [2020-10-28 12:39:09,451 INFO L226 Difference]: Without dead ends: 10914 [2020-10-28 12:39:09,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:39:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10914 states. [2020-10-28 12:39:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10914 to 10677. [2020-10-28 12:39:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10677 states. [2020-10-28 12:39:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10677 states to 10677 states and 13084 transitions. [2020-10-28 12:39:09,753 INFO L78 Accepts]: Start accepts. Automaton has 10677 states and 13084 transitions. Word has length 199 [2020-10-28 12:39:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 10677 states and 13084 transitions. [2020-10-28 12:39:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10677 states and 13084 transitions. [2020-10-28 12:39:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 12:39:09,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:09,759 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:39:09,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:39:09,759 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1451604279, now seen corresponding path program 1 times [2020-10-28 12:39:09,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:09,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832902522] [2020-10-28 12:39:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:11,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:12,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:39:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:39:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:12,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:12,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:39:12,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:39:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:12,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:39:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:39:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:13,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:39:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:39:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:39:13,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:13,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:39:13,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:39:13,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832902522] [2020-10-28 12:39:13,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:13,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:39:13,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112393926] [2020-10-28 12:39:13,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:13,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:13,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:13,320 INFO L87 Difference]: Start difference. First operand 10677 states and 13084 transitions. Second operand 7 states. [2020-10-28 12:39:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:52,202 INFO L93 Difference]: Finished difference Result 35202 states and 46438 transitions. [2020-10-28 12:39:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:39:52,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-28 12:39:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:52,296 INFO L225 Difference]: With dead ends: 35202 [2020-10-28 12:39:52,296 INFO L226 Difference]: Without dead ends: 24526 [2020-10-28 12:39:52,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:39:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24526 states. [2020-10-28 12:39:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24526 to 24335. [2020-10-28 12:39:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24335 states. [2020-10-28 12:39:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24335 states to 24335 states and 30231 transitions. [2020-10-28 12:39:52,971 INFO L78 Accepts]: Start accepts. Automaton has 24335 states and 30231 transitions. Word has length 244 [2020-10-28 12:39:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:52,972 INFO L481 AbstractCegarLoop]: Abstraction has 24335 states and 30231 transitions. [2020-10-28 12:39:52,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 24335 states and 30231 transitions. [2020-10-28 12:39:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-28 12:39:52,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:52,980 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 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] [2020-10-28 12:39:52,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:39:52,980 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1268013495, now seen corresponding path program 1 times [2020-10-28 12:39:52,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:52,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14753254] [2020-10-28 12:39:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 12:39:55,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:39:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2388 [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:39:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:55,673 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:39:55,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:39:55,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:55,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:39:55,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:55,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:39:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:39:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:39:56,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:56,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:39:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 12:39:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:56,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:56,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:39:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:39:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:56,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 12:39:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 136 proven. 76 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 12:39:56,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14753254] [2020-10-28 12:39:56,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:39:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721364200] [2020-10-28 12:39:56,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:56,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:56,534 INFO L87 Difference]: Start difference. First operand 24335 states and 30231 transitions. Second operand 7 states. [2020-10-28 12:39:57,905 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 12:39:59,812 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69