/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/Problem06_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:26:40,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:26:40,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:26:40,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:26:40,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:26:40,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:26:40,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:26:40,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:26:40,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:26:40,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:26:40,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:26:40,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:26:40,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:26:40,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:26:40,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:26:40,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:26:40,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:26:40,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:26:40,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:26:40,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:26:40,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:26:40,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:26:40,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:26:40,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:26:40,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:26:40,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:26:40,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:26:40,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:26:40,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:26:40,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:26:40,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:26:40,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:26:40,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:26:40,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:26:40,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:26:40,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:26:40,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:26:40,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:26:40,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:26:40,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:26:40,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:26:40,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:26:40,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:26:40,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:26:40,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:26:40,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:26:40,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:26:40,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:26:40,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:26:40,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:26:40,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:26:40,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:26:40,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:26:40,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:26:40,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:26:40,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:26:40,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:26:40,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:26:40,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:26:40,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:26:40,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:26:40,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:26:40,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:26:40,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:26:40,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:26:40,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:26:40,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:26:41,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:26:41,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:26:41,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:26:41,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:26:41,105 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:26:41,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label14.c [2020-10-27 16:26:41,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac013105c/846650ec5a8d4e8798ad85663679b5db/FLAG88baad0ba [2020-10-27 16:26:42,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:26:42,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label14.c [2020-10-27 16:26:42,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac013105c/846650ec5a8d4e8798ad85663679b5db/FLAG88baad0ba [2020-10-27 16:26:42,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac013105c/846650ec5a8d4e8798ad85663679b5db [2020-10-27 16:26:42,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:26:42,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:26:42,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:42,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:26:42,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:26:42,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:42" (1/1) ... [2020-10-27 16:26:42,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e50e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:42, skipping insertion in model container [2020-10-27 16:26:42,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:42" (1/1) ... [2020-10-27 16:26:42,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:26:42,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:26:45,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:45,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:26:46,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:46,393 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:26:46,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46 WrapperNode [2020-10-27 16:26:46,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:46,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:26:46,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:26:46,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:26:46,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:46,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... [2020-10-27 16:26:47,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:26:47,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:26:47,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:26:47,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:26:47,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:26:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:26:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:26:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:26:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:26:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:26:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:26:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:26:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:26:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:26:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:26:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:26:55,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:26:55,049 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:26:55,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:55 BoogieIcfgContainer [2020-10-27 16:26:55,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:26:55,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:26:55,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:26:55,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:26:55,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:26:42" (1/3) ... [2020-10-27 16:26:55,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4fa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:55, skipping insertion in model container [2020-10-27 16:26:55,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:46" (2/3) ... [2020-10-27 16:26:55,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4fa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:55, skipping insertion in model container [2020-10-27 16:26:55,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:55" (3/3) ... [2020-10-27 16:26:55,063 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label14.c [2020-10-27 16:26:55,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:26:55,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:26:55,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:26:55,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:26:55,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:26:55,136 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:26:55,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:26:55,136 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:26:55,136 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:26:55,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:26:55,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:26:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:26:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-27 16:26:55,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:26:55,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:26:55,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:26:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:26:55,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1266893516, now seen corresponding path program 1 times [2020-10-27 16:26:55,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:26:55,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146516510] [2020-10-27 16:26:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:26:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:01,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:01,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-27 16:27:01,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:27:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 16:27:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 16:27:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:27:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 994 [2020-10-27 16:27:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:27:03,011 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:03,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:03,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 16:27:03,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:27:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:27:04,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146516510] [2020-10-27 16:27:04,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:27:04,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:27:04,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988600731] [2020-10-27 16:27:04,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:27:04,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:27:04,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:27:04,819 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-27 16:27:05,051 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:27:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:27:22,569 INFO L93 Difference]: Finished difference Result 3772 states and 7046 transitions. [2020-10-27 16:27:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:27:22,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 985 [2020-10-27 16:27:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:27:22,633 INFO L225 Difference]: With dead ends: 3772 [2020-10-27 16:27:22,634 INFO L226 Difference]: Without dead ends: 2389 [2020-10-27 16:27:22,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:27:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-10-27 16:27:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2333. [2020-10-27 16:27:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-10-27 16:27:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 4232 transitions. [2020-10-27 16:27:22,859 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 4232 transitions. Word has length 985 [2020-10-27 16:27:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:27:22,863 INFO L481 AbstractCegarLoop]: Abstraction has 2333 states and 4232 transitions. [2020-10-27 16:27:22,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:27:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 4232 transitions. [2020-10-27 16:27:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-27 16:27:22,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:27:22,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:27:22,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:27:22,908 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:27:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:27:22,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1304151859, now seen corresponding path program 1 times [2020-10-27 16:27:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:27:22,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330724537] [2020-10-27 16:27:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:27:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:28,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-27 16:27:28,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:27:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-27 16:27:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:27:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 16:27:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 991 [2020-10-27 16:27:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:29,165 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 16:27:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:29,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:29,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:27:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:29,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:29,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:27:29,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 16:27:29,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 16:27:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:27:30,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330724537] [2020-10-27 16:27:30,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:27:30,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:27:30,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214647829] [2020-10-27 16:27:30,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:27:30,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:30,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:27:30,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:27:30,529 INFO L87 Difference]: Start difference. First operand 2333 states and 4232 transitions. Second operand 6 states. [2020-10-27 16:27:30,953 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:27:31,252 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:03,433 INFO L93 Difference]: Finished difference Result 9009 states and 16626 transitions. [2020-10-27 16:28:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:28:03,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 997 [2020-10-27 16:28:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:03,488 INFO L225 Difference]: With dead ends: 9009 [2020-10-27 16:28:03,488 INFO L226 Difference]: Without dead ends: 6682 [2020-10-27 16:28:03,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:28:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6682 states. [2020-10-27 16:28:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6682 to 4459. [2020-10-27 16:28:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-27 16:28:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 7556 transitions. [2020-10-27 16:28:03,719 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 7556 transitions. Word has length 997 [2020-10-27 16:28:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:03,721 INFO L481 AbstractCegarLoop]: Abstraction has 4459 states and 7556 transitions. [2020-10-27 16:28:03,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:28:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 7556 transitions. [2020-10-27 16:28:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-27 16:28:03,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:03,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:28:03,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:28:03,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1166972090, now seen corresponding path program 1 times [2020-10-27 16:28:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:03,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014594595] [2020-10-27 16:28:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-27 16:28:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:28:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-27 16:28:09,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:28:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 16:28:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 991 [2020-10-27 16:28:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:09,989 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:09,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:10,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:10,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:28:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 16:28:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:28:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:28:11,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014594595] [2020-10-27 16:28:11,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:11,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:28:11,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898499424] [2020-10-27 16:28:11,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:28:11,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:11,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:28:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:28:11,317 INFO L87 Difference]: Start difference. First operand 4459 states and 7556 transitions. Second operand 5 states. [2020-10-27 16:28:11,579 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:30,103 INFO L93 Difference]: Finished difference Result 13083 states and 22520 transitions. [2020-10-27 16:28:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:28:30,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1004 [2020-10-27 16:28:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:30,150 INFO L225 Difference]: With dead ends: 13083 [2020-10-27 16:28:30,151 INFO L226 Difference]: Without dead ends: 8630 [2020-10-27 16:28:30,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:28:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2020-10-27 16:28:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 8606. [2020-10-27 16:28:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8606 states. [2020-10-27 16:28:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8606 states to 8606 states and 13752 transitions. [2020-10-27 16:28:30,486 INFO L78 Accepts]: Start accepts. Automaton has 8606 states and 13752 transitions. Word has length 1004 [2020-10-27 16:28:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:30,487 INFO L481 AbstractCegarLoop]: Abstraction has 8606 states and 13752 transitions. [2020-10-27 16:28:30,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:28:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8606 states and 13752 transitions. [2020-10-27 16:28:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-27 16:28:30,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:30,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:28:30,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:28:30,530 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1870468401, now seen corresponding path program 1 times [2020-10-27 16:28:30,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:30,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894201367] [2020-10-27 16:28:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:35,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-27 16:28:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:28:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:36,145 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:36,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:36,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:28:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:28:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:36,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:36,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:28:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:28:37,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894201367] [2020-10-27 16:28:37,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:37,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:28:37,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718620220] [2020-10-27 16:28:37,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:28:37,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:28:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:28:37,020 INFO L87 Difference]: Start difference. First operand 8606 states and 13752 transitions. Second operand 7 states. [2020-10-27 16:28:37,451 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:28:37,852 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:29:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:29:18,389 INFO L93 Difference]: Finished difference Result 34735 states and 58285 transitions. [2020-10-27 16:29:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:29:18,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1016 [2020-10-27 16:29:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:29:18,531 INFO L225 Difference]: With dead ends: 34735 [2020-10-27 16:29:18,531 INFO L226 Difference]: Without dead ends: 26135 [2020-10-27 16:29:18,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:29:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26135 states. [2020-10-27 16:29:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26135 to 26029. [2020-10-27 16:29:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26029 states. [2020-10-27 16:29:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26029 states to 26029 states and 42369 transitions. [2020-10-27 16:29:19,465 INFO L78 Accepts]: Start accepts. Automaton has 26029 states and 42369 transitions. Word has length 1016 [2020-10-27 16:29:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:29:19,465 INFO L481 AbstractCegarLoop]: Abstraction has 26029 states and 42369 transitions. [2020-10-27 16:29:19,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:29:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26029 states and 42369 transitions. [2020-10-27 16:29:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-27 16:29:19,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:29:19,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:29:19,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:29:19,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:29:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:29:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 725337712, now seen corresponding path program 1 times [2020-10-27 16:29:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:29:19,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135695081] [2020-10-27 16:29:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:29:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:29:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:25,238 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:29:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:29:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:29:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:29:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:25,370 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:29:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:29:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:29:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 16:29:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 16:29:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:29:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:29:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:29:26,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135695081] [2020-10-27 16:29:26,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:29:26,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:29:26,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130502728] [2020-10-27 16:29:26,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:29:26,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:29:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:29:26,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:29:26,127 INFO L87 Difference]: Start difference. First operand 26029 states and 42369 transitions. Second operand 7 states. [2020-10-27 16:29:26,414 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:29:27,474 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:29:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:29:48,050 INFO L93 Difference]: Finished difference Result 53242 states and 88904 transitions. [2020-10-27 16:29:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:29:48,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-27 16:29:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:29:48,172 INFO L225 Difference]: With dead ends: 53242 [2020-10-27 16:29:48,172 INFO L226 Difference]: Without dead ends: 27219 [2020-10-27 16:29:48,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:29:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27219 states. [2020-10-27 16:29:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27219 to 26890. [2020-10-27 16:29:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26890 states. [2020-10-27 16:29:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26890 states to 26890 states and 40423 transitions. [2020-10-27 16:29:49,088 INFO L78 Accepts]: Start accepts. Automaton has 26890 states and 40423 transitions. Word has length 1028 [2020-10-27 16:29:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:29:49,088 INFO L481 AbstractCegarLoop]: Abstraction has 26890 states and 40423 transitions. [2020-10-27 16:29:49,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:29:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 26890 states and 40423 transitions. [2020-10-27 16:29:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-27 16:29:49,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:29:49,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:29:49,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:29:49,452 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:29:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:29:49,454 INFO L82 PathProgramCache]: Analyzing trace with hash -983540497, now seen corresponding path program 1 times [2020-10-27 16:29:49,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:29:49,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933038576] [2020-10-27 16:29:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:29:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:49,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-27 16:29:55,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:29:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5449 [2020-10-27 16:29:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 16:29:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:29:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:55,484 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:29:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:29:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:29:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:29:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:29:55,620 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:29:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:29:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:29:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:55,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:55,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 16:29:55,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:29:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 16:29:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:29:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:29:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 16:29:56,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933038576] [2020-10-27 16:29:56,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:29:56,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:29:56,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887880599] [2020-10-27 16:29:56,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:29:56,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:29:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:29:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:29:56,362 INFO L87 Difference]: Start difference. First operand 26890 states and 40423 transitions. Second operand 7 states. [2020-10-27 16:29:56,655 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:29:57,665 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:30:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:30:19,867 INFO L93 Difference]: Finished difference Result 82070 states and 133034 transitions. [2020-10-27 16:30:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:30:19,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1045 [2020-10-27 16:30:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:30:20,101 INFO L225 Difference]: With dead ends: 82070 [2020-10-27 16:30:20,102 INFO L226 Difference]: Without dead ends: 55186 [2020-10-27 16:30:20,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:30:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55186 states. [2020-10-27 16:30:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55186 to 54445. [2020-10-27 16:30:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54445 states. [2020-10-27 16:30:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54445 states to 54445 states and 81641 transitions. [2020-10-27 16:30:22,025 INFO L78 Accepts]: Start accepts. Automaton has 54445 states and 81641 transitions. Word has length 1045 [2020-10-27 16:30:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:30:22,026 INFO L481 AbstractCegarLoop]: Abstraction has 54445 states and 81641 transitions. [2020-10-27 16:30:22,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:30:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 54445 states and 81641 transitions. [2020-10-27 16:30:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-27 16:30:22,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:22,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:30:22,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:30:22,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1880980055, now seen corresponding path program 1 times [2020-10-27 16:30:22,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:22,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931078856] [2020-10-27 16:30:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:22,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking...