/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:12:58,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:12:58,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:12:58,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:12:58,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:12:58,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:12:58,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:12:58,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:12:58,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:12:58,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:12:58,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:12:58,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:12:58,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:12:58,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:12:58,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:12:58,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:12:58,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:12:58,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:12:58,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:12:58,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:12:58,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:12:58,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:12:58,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:12:58,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:12:58,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:12:58,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:12:58,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:12:58,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:12:58,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:12:58,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:12:58,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:12:58,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:12:58,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:12:58,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:12:58,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:12:58,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:12:58,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:12:58,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:12:58,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:12:58,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:12:58,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:12:58,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:12:58,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:12:58,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:12:58,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:12:58,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:12:58,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:12:58,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:12:58,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:12:58,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:12:58,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:12:58,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:12:58,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:12:58,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:12:58,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:12:58,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:12:58,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:12:58,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:12:58,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:12:58,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:12:58,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:12:58,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:12:58,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:12:58,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:12:58,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:12:58,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:12:58,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:12:58,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:12:58,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:12:58,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:12:58,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:12:58,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:12:58,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:12:58,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:12:58,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:12:58,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:12:58,873 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:12:58,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40.c [2020-10-27 19:12:58,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb7ec0b/701e6443595b4b848d8c35faa3a1ec65/FLAG3b86fd443 [2020-10-27 19:13:00,105 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:13:00,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label40.c [2020-10-27 19:13:00,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb7ec0b/701e6443595b4b848d8c35faa3a1ec65/FLAG3b86fd443 [2020-10-27 19:13:00,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb7ec0b/701e6443595b4b848d8c35faa3a1ec65 [2020-10-27 19:13:00,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:13:00,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:13:00,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:13:00,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:13:00,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:13:00,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:13:00" (1/1) ... [2020-10-27 19:13:00,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29916ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:00, skipping insertion in model container [2020-10-27 19:13:00,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:13:00" (1/1) ... [2020-10-27 19:13:00,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:13:00,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:13:01,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:13:01,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:13:02,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:13:02,408 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:13:02,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02 WrapperNode [2020-10-27 19:13:02,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:13:02,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:13:02,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:13:02,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:13:02,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... [2020-10-27 19:13:02,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:13:02,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:13:02,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:13:02,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:13:02,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:13:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:13:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:13:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:13:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:13:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:13:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:13:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:13:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:13:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:13:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:13:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:13:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:13:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:13:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:13:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:13:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:13:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:13:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:13:07,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:13:07,059 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:13:07,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:13:07 BoogieIcfgContainer [2020-10-27 19:13:07,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:13:07,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:13:07,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:13:07,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:13:07,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:13:00" (1/3) ... [2020-10-27 19:13:07,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3022db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:13:07, skipping insertion in model container [2020-10-27 19:13:07,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:13:02" (2/3) ... [2020-10-27 19:13:07,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3022db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:13:07, skipping insertion in model container [2020-10-27 19:13:07,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:13:07" (3/3) ... [2020-10-27 19:13:07,076 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label40.c [2020-10-27 19:13:07,090 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:13:07,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:13:07,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:13:07,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:13:07,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:13:07,163 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:13:07,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:13:07,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:13:07,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:13:07,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:13:07,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:13:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:13:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 19:13:07,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:07,223 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] [2020-10-27 19:13:07,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1233340728, now seen corresponding path program 1 times [2020-10-27 19:13:07,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:07,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584602992] [2020-10-27 19:13:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:13:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-27 19:13:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:13:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 19:13:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:13:08,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:13:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:13:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:13:08,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584602992] [2020-10-27 19:13:08,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:13:08,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:13:08,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842477821] [2020-10-27 19:13:08,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:13:08,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:08,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:13:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:13:08,407 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:13:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:17,398 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 19:13:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:13:17,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-27 19:13:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:17,430 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:13:17,431 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:13:17,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:13:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:13:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 19:13:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 19:13:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2332 transitions. [2020-10-27 19:13:17,617 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2332 transitions. Word has length 51 [2020-10-27 19:13:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:17,620 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2332 transitions. [2020-10-27 19:13:17,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:13:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2332 transitions. [2020-10-27 19:13:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 19:13:17,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:17,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:17,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:13:17,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash -607378783, now seen corresponding path program 1 times [2020-10-27 19:13:17,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:17,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934212634] [2020-10-27 19:13:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:18,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:18,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:13:18,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:13:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-27 19:13:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:13:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:13:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:18,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:13:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:18,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:13:18,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 19:13:18,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:13:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:13:18,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934212634] [2020-10-27 19:13:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:13:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412937996] [2020-10-27 19:13:18,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:13:18,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:13:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:13:18,865 INFO L87 Difference]: Start difference. First operand 1426 states and 2332 transitions. Second operand 5 states. [2020-10-27 19:13:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:28,207 INFO L93 Difference]: Finished difference Result 3563 states and 6025 transitions. [2020-10-27 19:13:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:13:28,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 19:13:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:28,222 INFO L225 Difference]: With dead ends: 3563 [2020-10-27 19:13:28,222 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:13:28,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:13:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:13:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2139. [2020-10-27 19:13:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-10-27 19:13:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3186 transitions. [2020-10-27 19:13:28,296 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3186 transitions. Word has length 121 [2020-10-27 19:13:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:28,297 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3186 transitions. [2020-10-27 19:13:28,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:13:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3186 transitions. [2020-10-27 19:13:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 19:13:28,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:28,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:28,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:13:28,300 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1036095603, now seen corresponding path program 1 times [2020-10-27 19:13:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:28,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640857125] [2020-10-27 19:13:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 19:13:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:13:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:29,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:29,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:13:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:29,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:13:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 19:13:29,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:13:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:13:29,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640857125] [2020-10-27 19:13:29,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:29,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:13:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16957513] [2020-10-27 19:13:29,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:13:29,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:29,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:13:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:13:29,321 INFO L87 Difference]: Start difference. First operand 2139 states and 3186 transitions. Second operand 5 states. [2020-10-27 19:13:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:39,236 INFO L93 Difference]: Finished difference Result 6410 states and 9643 transitions. [2020-10-27 19:13:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:13:39,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 19:13:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:39,267 INFO L225 Difference]: With dead ends: 6410 [2020-10-27 19:13:39,267 INFO L226 Difference]: Without dead ends: 4277 [2020-10-27 19:13:39,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:13:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-27 19:13:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4269. [2020-10-27 19:13:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2020-10-27 19:13:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 5872 transitions. [2020-10-27 19:13:39,412 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 5872 transitions. Word has length 122 [2020-10-27 19:13:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:39,413 INFO L481 AbstractCegarLoop]: Abstraction has 4269 states and 5872 transitions. [2020-10-27 19:13:39,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:13:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 5872 transitions. [2020-10-27 19:13:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 19:13:39,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:39,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:39,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:13:39,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1423774789, now seen corresponding path program 1 times [2020-10-27 19:13:39,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:39,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101945096] [2020-10-27 19:13:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:39,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:13:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:13:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-27 19:13:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:13:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:13:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:13:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:40,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:40,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:13:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:13:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 19:13:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:13:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:13:40,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101945096] [2020-10-27 19:13:40,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:40,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:13:40,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404024316] [2020-10-27 19:13:40,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:13:40,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:41,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:13:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:13:41,002 INFO L87 Difference]: Start difference. First operand 4269 states and 5872 transitions. Second operand 6 states. [2020-10-27 19:13:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:58,416 INFO L93 Difference]: Finished difference Result 16357 states and 23160 transitions. [2020-10-27 19:13:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:13:58,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-27 19:13:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:58,493 INFO L225 Difference]: With dead ends: 16357 [2020-10-27 19:13:58,494 INFO L226 Difference]: Without dead ends: 12094 [2020-10-27 19:13:58,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:13:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12094 states. [2020-10-27 19:13:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12094 to 12086. [2020-10-27 19:13:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12086 states. [2020-10-27 19:13:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12086 states to 12086 states and 16435 transitions. [2020-10-27 19:13:58,884 INFO L78 Accepts]: Start accepts. Automaton has 12086 states and 16435 transitions. Word has length 139 [2020-10-27 19:13:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:58,884 INFO L481 AbstractCegarLoop]: Abstraction has 12086 states and 16435 transitions. [2020-10-27 19:13:58,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:13:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 12086 states and 16435 transitions. [2020-10-27 19:13:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 19:13:58,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:58,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:58,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:13:58,892 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:58,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1524006301, now seen corresponding path program 1 times [2020-10-27 19:13:58,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:58,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335551718] [2020-10-27 19:13:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:59,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 19:13:59,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:13:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-27 19:13:59,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:13:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:13:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:13:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:00,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:14:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:00,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:14:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:00,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:00,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:14:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 19:14:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:00,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:14:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:14:00,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335551718] [2020-10-27 19:14:00,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:14:00,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:14:00,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543328774] [2020-10-27 19:14:00,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:14:00,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:14:00,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:14:00,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:14:00,397 INFO L87 Difference]: Start difference. First operand 12086 states and 16435 transitions. Second operand 5 states. [2020-10-27 19:14:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:14:11,971 INFO L93 Difference]: Finished difference Result 30555 states and 42755 transitions. [2020-10-27 19:14:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:14:11,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-27 19:14:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:14:12,128 INFO L225 Difference]: With dead ends: 30555 [2020-10-27 19:14:12,128 INFO L226 Difference]: Without dead ends: 18475 [2020-10-27 19:14:12,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:14:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2020-10-27 19:14:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 17765. [2020-10-27 19:14:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17765 states. [2020-10-27 19:14:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17765 states to 17765 states and 23441 transitions. [2020-10-27 19:14:12,614 INFO L78 Accepts]: Start accepts. Automaton has 17765 states and 23441 transitions. Word has length 183 [2020-10-27 19:14:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:14:12,615 INFO L481 AbstractCegarLoop]: Abstraction has 17765 states and 23441 transitions. [2020-10-27 19:14:12,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:14:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17765 states and 23441 transitions. [2020-10-27 19:14:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-27 19:14:12,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:14:12,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:14:12,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:14:12,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:14:12,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:14:12,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2033661764, now seen corresponding path program 1 times [2020-10-27 19:14:12,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:14:12,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352422344] [2020-10-27 19:14:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:14:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:16,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-27 19:14:16,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:14:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3752 [2020-10-27 19:14:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:14:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-27 19:14:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:14:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:14:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:16,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:14:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:14:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:16,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:14:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-27 19:14:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:14:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:17,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:17,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 19:14:17,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 19:14:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:14:17,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352422344] [2020-10-27 19:14:17,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:14:17,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:14:17,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005929494] [2020-10-27 19:14:17,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:14:17,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:14:17,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:14:17,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:14:17,988 INFO L87 Difference]: Start difference. First operand 17765 states and 23441 transitions. Second operand 5 states. [2020-10-27 19:14:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:14:24,579 INFO L93 Difference]: Finished difference Result 35551 states and 46979 transitions. [2020-10-27 19:14:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:14:24,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 455 [2020-10-27 19:14:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:14:24,641 INFO L225 Difference]: With dead ends: 35551 [2020-10-27 19:14:24,641 INFO L226 Difference]: Without dead ends: 17773 [2020-10-27 19:14:24,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:14:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17773 states. [2020-10-27 19:14:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17773 to 17765. [2020-10-27 19:14:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17765 states. [2020-10-27 19:14:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17765 states to 17765 states and 23428 transitions. [2020-10-27 19:14:25,059 INFO L78 Accepts]: Start accepts. Automaton has 17765 states and 23428 transitions. Word has length 455 [2020-10-27 19:14:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:14:25,060 INFO L481 AbstractCegarLoop]: Abstraction has 17765 states and 23428 transitions. [2020-10-27 19:14:25,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:14:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 17765 states and 23428 transitions. [2020-10-27 19:14:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-27 19:14:25,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:14:25,099 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:14:25,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:14:25,100 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:14:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:14:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash 383745761, now seen corresponding path program 1 times [2020-10-27 19:14:25,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:14:25,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54085731] [2020-10-27 19:14:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:14:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:25,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:30,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-27 19:14:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:14:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 19:14:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:14:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 19:14:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:14:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:14:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:30,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:30,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:14:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:14:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:30,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:30,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:14:30,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:14:30,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:14:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:31,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-27 19:14:31,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 19:14:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 386 [2020-10-27 19:14:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:14:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 19:14:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 19:14:31,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54085731] [2020-10-27 19:14:31,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:14:31,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:14:31,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336976299] [2020-10-27 19:14:31,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:14:31,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:14:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:14:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:14:31,947 INFO L87 Difference]: Start difference. First operand 17765 states and 23428 transitions. Second operand 5 states. [2020-10-27 19:14:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:14:39,533 INFO L93 Difference]: Finished difference Result 35566 states and 46969 transitions. [2020-10-27 19:14:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:14:39,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 514 [2020-10-27 19:14:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:14:39,588 INFO L225 Difference]: With dead ends: 35566 [2020-10-27 19:14:39,589 INFO L226 Difference]: Without dead ends: 17773 [2020-10-27 19:14:39,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:14:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17773 states. [2020-10-27 19:14:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17773 to 17765. [2020-10-27 19:14:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17765 states. [2020-10-27 19:14:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17765 states to 17765 states and 23420 transitions. [2020-10-27 19:14:39,986 INFO L78 Accepts]: Start accepts. Automaton has 17765 states and 23420 transitions. Word has length 514 [2020-10-27 19:14:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:14:39,987 INFO L481 AbstractCegarLoop]: Abstraction has 17765 states and 23420 transitions. [2020-10-27 19:14:39,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:14:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17765 states and 23420 transitions. [2020-10-27 19:14:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-27 19:14:40,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:14:40,029 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:14:40,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:14:40,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:14:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:14:40,030 INFO L82 PathProgramCache]: Analyzing trace with hash -337175739, now seen corresponding path program 1 times [2020-10-27 19:14:40,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:14:40,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719231250] [2020-10-27 19:14:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:14:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:45,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-27 19:14:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:14:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 19:14:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:14:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:14:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:14:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:14:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:14:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:45,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:45,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:14:45,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 19:14:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:14:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:14:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:14:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:14:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-27 19:14:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:14:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:14:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 419 [2020-10-27 19:14:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:14:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 19:14:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:14:49,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719231250] [2020-10-27 19:14:49,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:14:49,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:14:49,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178833952] [2020-10-27 19:14:49,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:14:49,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:14:49,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:14:49,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:14:49,963 INFO L87 Difference]: Start difference. First operand 17765 states and 23420 transitions. Second operand 8 states. [2020-10-27 19:15:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:15:07,762 INFO L93 Difference]: Finished difference Result 41460 states and 55367 transitions. [2020-10-27 19:15:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:15:07,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 537 [2020-10-27 19:15:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:15:07,848 INFO L225 Difference]: With dead ends: 41460 [2020-10-27 19:15:07,849 INFO L226 Difference]: Without dead ends: 22967 [2020-10-27 19:15:07,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:15:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22967 states. [2020-10-27 19:15:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22967 to 22217. [2020-10-27 19:15:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22217 states. [2020-10-27 19:15:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22217 states to 22217 states and 27025 transitions. [2020-10-27 19:15:08,589 INFO L78 Accepts]: Start accepts. Automaton has 22217 states and 27025 transitions. Word has length 537 [2020-10-27 19:15:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:15:08,589 INFO L481 AbstractCegarLoop]: Abstraction has 22217 states and 27025 transitions. [2020-10-27 19:15:08,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:15:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22217 states and 27025 transitions. [2020-10-27 19:15:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-27 19:15:08,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:15:08,664 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:15:08,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:15:08,665 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:15:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:15:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1017235891, now seen corresponding path program 1 times [2020-10-27 19:15:08,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:15:08,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20072095] [2020-10-27 19:15:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:15:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:13,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:13,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-27 19:15:13,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:15:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 19:15:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:15:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:15:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 418 [2020-10-27 19:15:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:15:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:15:13,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:15:13,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:15:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:15:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:15:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:14,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:15:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 19:15:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:15:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:15:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:15:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:14,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 419 [2020-10-27 19:15:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:15:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:14,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:15:14,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 19:15:14,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:15:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:15:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 19:15:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:15:15,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20072095] [2020-10-27 19:15:15,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:15:15,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:15:15,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949006571] [2020-10-27 19:15:15,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:15:15,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:15:15,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:15:15,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:15:15,447 INFO L87 Difference]: Start difference. First operand 22217 states and 27025 transitions. Second operand 7 states. [2020-10-27 19:15:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:15:33,760 INFO L93 Difference]: Finished difference Result 77371 states and 107040 transitions. [2020-10-27 19:15:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:15:33,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-27 19:15:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:15:33,988 INFO L225 Difference]: With dead ends: 77371 [2020-10-27 19:15:33,988 INFO L226 Difference]: Without dead ends: 55160 [2020-10-27 19:15:34,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:15:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55160 states. [2020-10-27 19:15:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55160 to 52481. [2020-10-27 19:15:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52481 states. [2020-10-27 19:15:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52481 states to 52481 states and 66206 transitions. [2020-10-27 19:15:35,887 INFO L78 Accepts]: Start accepts. Automaton has 52481 states and 66206 transitions. Word has length 541 [2020-10-27 19:15:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:15:35,891 INFO L481 AbstractCegarLoop]: Abstraction has 52481 states and 66206 transitions. [2020-10-27 19:15:35,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:15:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 52481 states and 66206 transitions. [2020-10-27 19:15:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-27 19:15:36,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:15:36,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:15:36,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:15:36,011 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:15:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:15:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash -580696511, now seen corresponding path program 1 times [2020-10-27 19:15:36,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:15:36,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413200558] [2020-10-27 19:15:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:15:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-27 19:15:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 559 [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 19:15:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:15:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:41,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:41,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:15:41,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:15:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:15:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:41,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:15:41,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:15:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 19:15:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:42,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:42,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:15:42,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-27 19:15:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:15:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:15:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:15:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:15:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 19:15:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 19:15:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:15:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 19:15:42,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413200558] [2020-10-27 19:15:42,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:15:42,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:15:42,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128957822] [2020-10-27 19:15:42,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:15:42,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:15:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:15:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:15:42,445 INFO L87 Difference]: Start difference. First operand 52481 states and 66206 transitions. Second operand 5 states. [2020-10-27 19:15:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:15:52,577 INFO L93 Difference]: Finished difference Result 126858 states and 161466 transitions. [2020-10-27 19:15:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:15:52,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 599 [2020-10-27 19:15:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:15:52,875 INFO L225 Difference]: With dead ends: 126858 [2020-10-27 19:15:52,876 INFO L226 Difference]: Without dead ends: 74467 [2020-10-27 19:15:52,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:15:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74467 states. [2020-10-27 19:15:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74467 to 73051. [2020-10-27 19:15:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73051 states. [2020-10-27 19:15:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73051 states to 73051 states and 92100 transitions. [2020-10-27 19:15:55,468 INFO L78 Accepts]: Start accepts. Automaton has 73051 states and 92100 transitions. Word has length 599 [2020-10-27 19:15:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:15:55,469 INFO L481 AbstractCegarLoop]: Abstraction has 73051 states and 92100 transitions. [2020-10-27 19:15:55,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:15:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 73051 states and 92100 transitions. [2020-10-27 19:15:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-27 19:15:55,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:15:55,635 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:15:55,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:15:55,636 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:15:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:15:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1604006080, now seen corresponding path program 1 times [2020-10-27 19:15:55,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:15:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936166002] [2020-10-27 19:15:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:15:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:15:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:15:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 673 [2020-10-27 19:16:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:16:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:16:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:16:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:16:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:16:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:16:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:06,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-27 19:16:06,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:16:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 19:16:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:16:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:16:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 706 [2020-10-27 19:16:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:16:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:07,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:16:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:16:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 418 [2020-10-27 19:16:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:16:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 19:16:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:16:09,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936166002] [2020-10-27 19:16:09,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:16:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:16:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124362915] [2020-10-27 19:16:09,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:16:09,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:16:09,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:16:09,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:16:09,825 INFO L87 Difference]: Start difference. First operand 73051 states and 92100 transitions. Second operand 9 states. [2020-10-27 19:16:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:16:31,211 INFO L93 Difference]: Finished difference Result 146547 states and 190049 transitions. [2020-10-27 19:16:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 19:16:31,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 823 [2020-10-27 19:16:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:16:31,570 INFO L225 Difference]: With dead ends: 146547 [2020-10-27 19:16:31,570 INFO L226 Difference]: Without dead ends: 88435 [2020-10-27 19:16:31,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:16:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88435 states. [2020-10-27 19:16:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88435 to 88141. [2020-10-27 19:16:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88141 states.