/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/Problem12_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:45:08,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:45:08,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:45:08,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:45:08,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:45:08,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:45:08,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:45:08,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:45:08,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:45:08,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:45:08,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:45:08,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:45:08,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:45:08,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:45:08,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:45:08,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:45:08,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:45:08,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:45:08,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:45:08,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:45:08,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:45:08,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:45:08,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:45:08,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:45:08,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:45:08,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:45:08,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:45:08,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:45:08,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:45:08,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:45:08,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:45:08,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:45:08,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:45:08,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:45:08,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:45:08,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:45:08,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:45:08,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:45:08,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:45:08,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:45:08,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:45:08,502 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 17:45:08,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:45:08,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:45:08,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:45:08,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:45:08,538 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:45:08,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:45:08,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:45:08,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:45:08,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:45:08,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:45:08,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:45:08,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:45:08,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:45:08,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:45:08,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:45:08,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:45:08,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:45:08,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:45:08,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:45:08,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:45:08,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:45:08,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:45:08,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:45:08,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:45:08,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:45:08,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:45:08,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:45:08,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:45:08,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:45:08,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:45:08,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:45:09,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:45:09,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:45:09,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:45:09,018 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:45:09,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-27 17:45:09,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23a15ee8/cdd8bfa3d65e430ebee8bc82cc0481fa/FLAG9a1a2c34b [2020-10-27 17:45:10,383 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:45:10,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-27 17:45:10,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23a15ee8/cdd8bfa3d65e430ebee8bc82cc0481fa/FLAG9a1a2c34b [2020-10-27 17:45:10,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23a15ee8/cdd8bfa3d65e430ebee8bc82cc0481fa [2020-10-27 17:45:10,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:45:10,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:45:10,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:45:10,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:45:10,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:45:10,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:45:10" (1/1) ... [2020-10-27 17:45:10,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b99426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:10, skipping insertion in model container [2020-10-27 17:45:10,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:45:10" (1/1) ... [2020-10-27 17:45:10,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:45:10,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:45:12,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:45:12,528 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:45:13,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:45:13,466 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:45:13,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13 WrapperNode [2020-10-27 17:45:13,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:45:13,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:45:13,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:45:13,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:45:13,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (1/1) ... [2020-10-27 17:45:13,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:45:13,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:45:13,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:45:13,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:45:13,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (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 17:45:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:45:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:45:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:45:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:45:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:45:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:45:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:45:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:45:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:45:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:45:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:45:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:45:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:45:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:45:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:45:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:45:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:45:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:45:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:45:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:45:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:45:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:45:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:45:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:45:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:45:19,724 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:45:19,725 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:45:19,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:45:19 BoogieIcfgContainer [2020-10-27 17:45:19,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:45:19,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:45:19,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:45:19,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:45:19,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:45:10" (1/3) ... [2020-10-27 17:45:19,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddf71f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:45:19, skipping insertion in model container [2020-10-27 17:45:19,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:45:13" (2/3) ... [2020-10-27 17:45:19,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddf71f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:45:19, skipping insertion in model container [2020-10-27 17:45:19,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:45:19" (3/3) ... [2020-10-27 17:45:19,738 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2020-10-27 17:45:19,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:45:19,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:45:19,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:45:19,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:45:19,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:45:19,806 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:45:19,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:45:19,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:45:19,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:45:19,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:45:19,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:45:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:45:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 17:45:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:19,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:19,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash -100747180, now seen corresponding path program 1 times [2020-10-27 17:45:19,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:19,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800567319] [2020-10-27 17:45:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:20,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:45:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-27 17:45:20,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:45:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:45:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 17:45:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:45:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:21,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:45:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:21,105 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 17:45:21,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800567319] [2020-10-27 17:45:21,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:45:21,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:45:21,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701557859] [2020-10-27 17:45:21,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:45:21,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:45:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:45:21,143 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:45:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:31,644 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:45:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:31,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-27 17:45:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:31,687 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:45:31,689 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:45:31,704 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 17:45:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:45:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:45:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:45:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-27 17:45:31,885 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 62 [2020-10-27 17:45:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-27 17:45:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:45:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-27 17:45:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 17:45:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:31,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 17:45:31,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:45:31,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:31,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1458832066, now seen corresponding path program 1 times [2020-10-27 17:45:31,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:31,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311884077] [2020-10-27 17:45:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 17:45:33,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:45:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-10-27 17:45:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 17:45:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:45:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:45:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:33,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:45:33,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 17:45:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:45:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 17:45:33,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 17:45:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:33,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311884077] [2020-10-27 17:45:33,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:33,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:33,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729741163] [2020-10-27 17:45:33,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:33,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:33,757 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 5 states. [2020-10-27 17:45:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:46,779 INFO L93 Difference]: Finished difference Result 4677 states and 8271 transitions. [2020-10-27 17:45:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:46,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-27 17:45:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:46,813 INFO L225 Difference]: With dead ends: 4677 [2020-10-27 17:45:46,813 INFO L226 Difference]: Without dead ends: 3129 [2020-10-27 17:45:46,819 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 17:45:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-27 17:45:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3112. [2020-10-27 17:45:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-27 17:45:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 5078 transitions. [2020-10-27 17:45:46,997 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 5078 transitions. Word has length 131 [2020-10-27 17:45:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:46,998 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 5078 transitions. [2020-10-27 17:45:46,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 5078 transitions. [2020-10-27 17:45:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 17:45:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:47,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:47,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:45:47,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 605636420, now seen corresponding path program 1 times [2020-10-27 17:45:47,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:47,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713735937] [2020-10-27 17:45:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 17:45:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-27 17:45:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:45:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:45:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:48,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:48,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:45:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:45:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 17:45:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:45:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:48,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713735937] [2020-10-27 17:45:48,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:48,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:48,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179736681] [2020-10-27 17:45:48,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:48,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:48,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:48,694 INFO L87 Difference]: Start difference. First operand 3112 states and 5078 transitions. Second operand 5 states. [2020-10-27 17:46:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:00,146 INFO L93 Difference]: Finished difference Result 9341 states and 15480 transitions. [2020-10-27 17:46:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:00,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 17:46:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:00,197 INFO L225 Difference]: With dead ends: 9341 [2020-10-27 17:46:00,198 INFO L226 Difference]: Without dead ends: 6235 [2020-10-27 17:46:00,208 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 17:46:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2020-10-27 17:46:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 6221. [2020-10-27 17:46:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-10-27 17:46:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 8770 transitions. [2020-10-27 17:46:00,451 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 8770 transitions. Word has length 150 [2020-10-27 17:46:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:00,455 INFO L481 AbstractCegarLoop]: Abstraction has 6221 states and 8770 transitions. [2020-10-27 17:46:00,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 8770 transitions. [2020-10-27 17:46:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 17:46:00,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:00,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:00,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:46:00,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1468952918, now seen corresponding path program 1 times [2020-10-27 17:46:00,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:00,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534431837] [2020-10-27 17:46:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:01,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:01,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 17:46:01,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:46:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-10-27 17:46:01,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 17:46:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:46:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:02,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:46:02,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 17:46:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:02,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534431837] [2020-10-27 17:46:02,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:02,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:02,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717307483] [2020-10-27 17:46:02,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:02,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:02,418 INFO L87 Difference]: Start difference. First operand 6221 states and 8770 transitions. Second operand 5 states. [2020-10-27 17:46:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:16,114 INFO L93 Difference]: Finished difference Result 15556 states and 22988 transitions. [2020-10-27 17:46:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:16,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-27 17:46:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:16,172 INFO L225 Difference]: With dead ends: 15556 [2020-10-27 17:46:16,172 INFO L226 Difference]: Without dead ends: 9341 [2020-10-27 17:46:16,190 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 17:46:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-27 17:46:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9327. [2020-10-27 17:46:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9327 states. [2020-10-27 17:46:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 12385 transitions. [2020-10-27 17:46:16,545 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 12385 transitions. Word has length 173 [2020-10-27 17:46:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:16,547 INFO L481 AbstractCegarLoop]: Abstraction has 9327 states and 12385 transitions. [2020-10-27 17:46:16,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 12385 transitions. [2020-10-27 17:46:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 17:46:16,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:16,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:16,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:46:16,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1716650274, now seen corresponding path program 1 times [2020-10-27 17:46:16,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:16,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323461147] [2020-10-27 17:46:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:18,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 17:46:18,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:46:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-27 17:46:18,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 17:46:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:46:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 17:46:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:18,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 17:46:18,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 17:46:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:18,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323461147] [2020-10-27 17:46:18,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:18,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:18,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014809940] [2020-10-27 17:46:18,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:18,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:18,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:18,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:18,506 INFO L87 Difference]: Start difference. First operand 9327 states and 12385 transitions. Second operand 5 states. [2020-10-27 17:46:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:33,158 INFO L93 Difference]: Finished difference Result 27959 states and 37909 transitions. [2020-10-27 17:46:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:33,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-27 17:46:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:33,232 INFO L225 Difference]: With dead ends: 27959 [2020-10-27 17:46:33,232 INFO L226 Difference]: Without dead ends: 18638 [2020-10-27 17:46:33,255 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 17:46:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18638 states. [2020-10-27 17:46:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18638 to 18630. [2020-10-27 17:46:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18630 states. [2020-10-27 17:46:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18630 states to 18630 states and 23417 transitions. [2020-10-27 17:46:33,751 INFO L78 Accepts]: Start accepts. Automaton has 18630 states and 23417 transitions. Word has length 179 [2020-10-27 17:46:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:33,752 INFO L481 AbstractCegarLoop]: Abstraction has 18630 states and 23417 transitions. [2020-10-27 17:46:33,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18630 states and 23417 transitions. [2020-10-27 17:46:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 17:46:33,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:33,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:33,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:46:33,759 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash -866746492, now seen corresponding path program 1 times [2020-10-27 17:46:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:33,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377023368] [2020-10-27 17:46:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 17:46:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:46:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3842 [2020-10-27 17:46:37,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 17:46:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:46:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:37,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:46:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 17:46:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 17:46:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:37,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:46:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 17:46:37,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 17:46:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 17:46:37,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377023368] [2020-10-27 17:46:37,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:37,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:37,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307396436] [2020-10-27 17:46:37,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:37,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:37,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:37,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:37,960 INFO L87 Difference]: Start difference. First operand 18630 states and 23417 transitions. Second operand 5 states. [2020-10-27 17:46:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:50,477 INFO L93 Difference]: Finished difference Result 43459 states and 56816 transitions. [2020-10-27 17:46:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:50,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-27 17:46:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:50,564 INFO L225 Difference]: With dead ends: 43459 [2020-10-27 17:46:50,564 INFO L226 Difference]: Without dead ends: 24835 [2020-10-27 17:46:50,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 17:46:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24835 states. [2020-10-27 17:46:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24835 to 24060. [2020-10-27 17:46:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24060 states. [2020-10-27 17:46:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24060 states to 24060 states and 30147 transitions. [2020-10-27 17:46:51,140 INFO L78 Accepts]: Start accepts. Automaton has 24060 states and 30147 transitions. Word has length 208 [2020-10-27 17:46:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:51,141 INFO L481 AbstractCegarLoop]: Abstraction has 24060 states and 30147 transitions. [2020-10-27 17:46:51,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24060 states and 30147 transitions. [2020-10-27 17:46:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 17:46:51,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:51,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:51,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:46:51,149 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash -713623044, now seen corresponding path program 1 times [2020-10-27 17:46:51,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:51,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843321247] [2020-10-27 17:46:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 17:46:55,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:46:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4391 [2020-10-27 17:46:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 17:46:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:46:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:55,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:55,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 17:46:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:55,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:46:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 17:46:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:46:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 17:46:56,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843321247] [2020-10-27 17:46:56,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:56,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:46:56,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354049017] [2020-10-27 17:46:56,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:46:56,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:46:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:56,004 INFO L87 Difference]: Start difference. First operand 24060 states and 30147 transitions. Second operand 6 states. [2020-10-27 17:47:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:15,442 INFO L93 Difference]: Finished difference Result 60527 states and 77369 transitions. [2020-10-27 17:47:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:47:15,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2020-10-27 17:47:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:15,583 INFO L225 Difference]: With dead ends: 60527 [2020-10-27 17:47:15,584 INFO L226 Difference]: Without dead ends: 36473 [2020-10-27 17:47:15,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 17:47:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36473 states. [2020-10-27 17:47:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36473 to 34931. [2020-10-27 17:47:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34931 states. [2020-10-27 17:47:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34931 states to 34931 states and 44302 transitions. [2020-10-27 17:47:16,376 INFO L78 Accepts]: Start accepts. Automaton has 34931 states and 44302 transitions. Word has length 212 [2020-10-27 17:47:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:16,377 INFO L481 AbstractCegarLoop]: Abstraction has 34931 states and 44302 transitions. [2020-10-27 17:47:16,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:47:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34931 states and 44302 transitions. [2020-10-27 17:47:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-27 17:47:16,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:16,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:47:16,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:47:16,413 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1959875536, now seen corresponding path program 1 times [2020-10-27 17:47:16,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:16,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673083596] [2020-10-27 17:47:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:21,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:21,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-27 17:47:21,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:21,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 17:47:21,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 372 [2020-10-27 17:47:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:47:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:47:21,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:21,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:21,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:47:21,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:21,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:47:21,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:47:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:47:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 17:47:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 17:47:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-27 17:47:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:47:22,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673083596] [2020-10-27 17:47:22,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:22,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:22,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135875034] [2020-10-27 17:47:22,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:22,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:22,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:22,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:22,590 INFO L87 Difference]: Start difference. First operand 34931 states and 44302 transitions. Second operand 5 states. [2020-10-27 17:47:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:40,337 INFO L93 Difference]: Finished difference Result 86898 states and 113455 transitions. [2020-10-27 17:47:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:40,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 422 [2020-10-27 17:47:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:40,656 INFO L225 Difference]: With dead ends: 86898 [2020-10-27 17:47:40,656 INFO L226 Difference]: Without dead ends: 51973 [2020-10-27 17:47:40,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 17:47:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51973 states. [2020-10-27 17:47:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51973 to 50431. [2020-10-27 17:47:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50431 states. [2020-10-27 17:47:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50431 states to 50431 states and 63008 transitions. [2020-10-27 17:47:42,288 INFO L78 Accepts]: Start accepts. Automaton has 50431 states and 63008 transitions. Word has length 422 [2020-10-27 17:47:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:42,289 INFO L481 AbstractCegarLoop]: Abstraction has 50431 states and 63008 transitions. [2020-10-27 17:47:42,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 50431 states and 63008 transitions. [2020-10-27 17:47:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-27 17:47:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:42,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:47:42,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:47:42,367 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1051504206, now seen corresponding path program 1 times [2020-10-27 17:47:42,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:42,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320032153] [2020-10-27 17:47:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 457 [2020-10-27 17:47:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 17:47:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:47,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:47,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:47,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:47,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:47,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:47:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-27 17:47:48,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 17:47:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 365 [2020-10-27 17:47:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:47:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:47:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:47:48,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320032153] [2020-10-27 17:47:48,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:48,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:47:48,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249000492] [2020-10-27 17:47:48,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:47:48,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:47:48,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:48,996 INFO L87 Difference]: Start difference. First operand 50431 states and 63008 transitions. Second operand 6 states. [2020-10-27 17:48:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:15,075 INFO L93 Difference]: Finished difference Result 111675 states and 144184 transitions. [2020-10-27 17:48:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:48:15,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 508 [2020-10-27 17:48:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:15,359 INFO L225 Difference]: With dead ends: 111675 [2020-10-27 17:48:15,360 INFO L226 Difference]: Without dead ends: 61250 [2020-10-27 17:48:15,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:48:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61250 states. [2020-10-27 17:48:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61250 to 61242. [2020-10-27 17:48:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61242 states. [2020-10-27 17:48:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61242 states to 61242 states and 77001 transitions. [2020-10-27 17:48:16,998 INFO L78 Accepts]: Start accepts. Automaton has 61242 states and 77001 transitions. Word has length 508 [2020-10-27 17:48:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 61242 states and 77001 transitions. [2020-10-27 17:48:16,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:48:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 61242 states and 77001 transitions. [2020-10-27 17:48:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-27 17:48:17,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:17,364 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:48:17,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:48:17,367 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash 787041912, now seen corresponding path program 1 times [2020-10-27 17:48:17,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:17,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260388476] [2020-10-27 17:48:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-27 17:48:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:48:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 17:48:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 482 [2020-10-27 17:48:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 17:48:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:22,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:22,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:22,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:48:22,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:48:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:48:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:48:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 17:48:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-27 17:48:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:23,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:23,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 17:48:23,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 17:48:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-27 17:48:23,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260388476] [2020-10-27 17:48:23,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:23,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:48:23,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642846666] [2020-10-27 17:48:23,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:48:23,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:23,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:48:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:23,412 INFO L87 Difference]: Start difference. First operand 61242 states and 77001 transitions. Second operand 5 states.