/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/Problem04_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:55:20,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:55:20,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:55:20,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:55:20,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:55:20,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:55:20,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:55:20,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:55:20,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:55:20,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:55:20,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:55:20,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:55:20,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:55:20,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:55:20,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:55:20,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:55:20,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:55:20,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:55:20,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:55:20,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:55:20,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:55:20,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:55:20,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:55:20,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:55:20,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:55:20,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:55:20,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:55:20,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:55:20,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:55:20,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:55:20,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:55:20,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:55:20,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:55:20,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:55:20,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:55:20,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:55:20,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:55:20,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:55:20,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:55:20,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:55:20,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:55:20,572 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 15:55:20,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:55:20,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:55:20,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:55:20,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:55:20,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:55:20,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:55:20,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:55:20,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:55:20,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:55:20,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:55:20,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:55:20,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:55:20,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:55:20,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:55:20,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:55:20,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:55:20,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:55:20,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:55:20,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:55:20,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:55:20,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:55:20,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:55:20,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:55:20,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:55:20,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:55:20,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:55:20,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:55:20,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:55:20,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:55:20,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:55:21,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:55:21,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:55:21,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:55:21,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:55:21,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:55:21,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label18.c [2020-10-27 15:55:21,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5954e53af/49790bb282614d709026824ed5a3bde3/FLAGc32317d2e [2020-10-27 15:55:22,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:55:22,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label18.c [2020-10-27 15:55:22,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5954e53af/49790bb282614d709026824ed5a3bde3/FLAGc32317d2e [2020-10-27 15:55:22,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5954e53af/49790bb282614d709026824ed5a3bde3 [2020-10-27 15:55:22,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:55:22,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:55:22,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:55:22,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:55:22,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:55:22,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:22" (1/1) ... [2020-10-27 15:55:22,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a747ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:22, skipping insertion in model container [2020-10-27 15:55:22,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:22" (1/1) ... [2020-10-27 15:55:22,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:55:22,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:55:24,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:55:24,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:55:25,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:55:25,243 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:55:25,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25 WrapperNode [2020-10-27 15:55:25,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:55:25,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:55:25,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:55:25,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:55:25,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (1/1) ... [2020-10-27 15:55:25,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:55:25,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:55:25,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:55:25,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:55:25,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (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 15:55:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:55:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:55:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:55:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:55:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:55:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:55:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:55:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:55:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:55:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:55:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:55:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:55:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:55:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:55:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:55:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:55:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:55:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:55:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:55:30,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:55:30,998 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:55:31,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:31 BoogieIcfgContainer [2020-10-27 15:55:31,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:55:31,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:55:31,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:55:31,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:55:31,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:55:22" (1/3) ... [2020-10-27 15:55:31,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd9b1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:31, skipping insertion in model container [2020-10-27 15:55:31,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:25" (2/3) ... [2020-10-27 15:55:31,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd9b1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:31, skipping insertion in model container [2020-10-27 15:55:31,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:31" (3/3) ... [2020-10-27 15:55:31,018 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label18.c [2020-10-27 15:55:31,033 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:55:31,040 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:55:31,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:55:31,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:55:31,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:55:31,109 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:55:31,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:55:31,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:55:31,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:55:31,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:55:31,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:55:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:55:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-27 15:55:31,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:31,227 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] [2020-10-27 15:55:31,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:31,237 INFO L82 PathProgramCache]: Analyzing trace with hash -250423508, now seen corresponding path program 1 times [2020-10-27 15:55:31,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:31,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727509718] [2020-10-27 15:55:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-27 15:55:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 15:55:37,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:55:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:55:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-27 15:55:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:55:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:38,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:55:38,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:55:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:39,153 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 15:55:39,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727509718] [2020-10-27 15:55:39,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:55:39,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:55:39,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944137293] [2020-10-27 15:55:39,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:55:39,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:39,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:55:39,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:55:39,182 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-27 15:55:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:54,041 INFO L93 Difference]: Finished difference Result 3526 states and 6832 transitions. [2020-10-27 15:55:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:55:54,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 790 [2020-10-27 15:55:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:54,099 INFO L225 Difference]: With dead ends: 3526 [2020-10-27 15:55:54,099 INFO L226 Difference]: Without dead ends: 2548 [2020-10-27 15:55:54,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:55:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-27 15:55:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2535. [2020-10-27 15:55:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-27 15:55:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 4176 transitions. [2020-10-27 15:55:54,300 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 4176 transitions. Word has length 790 [2020-10-27 15:55:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:54,303 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 4176 transitions. [2020-10-27 15:55:54,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:55:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 4176 transitions. [2020-10-27 15:55:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-27 15:55:54,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:54,336 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:55:54,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:55:54,337 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash 421715342, now seen corresponding path program 1 times [2020-10-27 15:55:54,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772123673] [2020-10-27 15:55:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:59,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-27 15:55:59,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:55:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 15:55:59,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:55:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 15:55:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-27 15:55:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:56:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:00,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:00,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:00,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:56:00,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:00,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:00,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:56:00,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:56:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:56:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:56:01,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772123673] [2020-10-27 15:56:01,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:01,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:56:01,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021044861] [2020-10-27 15:56:01,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:56:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:01,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:56:01,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:56:01,414 INFO L87 Difference]: Start difference. First operand 2535 states and 4176 transitions. Second operand 5 states. [2020-10-27 15:56:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:11,671 INFO L93 Difference]: Finished difference Result 7612 states and 12671 transitions. [2020-10-27 15:56:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:11,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 798 [2020-10-27 15:56:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:11,705 INFO L225 Difference]: With dead ends: 7612 [2020-10-27 15:56:11,706 INFO L226 Difference]: Without dead ends: 5083 [2020-10-27 15:56:11,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:56:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2020-10-27 15:56:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 5070. [2020-10-27 15:56:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5070 states. [2020-10-27 15:56:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 7438 transitions. [2020-10-27 15:56:11,906 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 7438 transitions. Word has length 798 [2020-10-27 15:56:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:11,908 INFO L481 AbstractCegarLoop]: Abstraction has 5070 states and 7438 transitions. [2020-10-27 15:56:11,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 7438 transitions. [2020-10-27 15:56:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-27 15:56:11,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:11,942 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:56:11,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:56:11,943 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash -704628763, now seen corresponding path program 1 times [2020-10-27 15:56:11,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:11,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065194026] [2020-10-27 15:56:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:17,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-27 15:56:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:56:17,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 15:56:17,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:17,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:56:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:56:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-27 15:56:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:56:17,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:56:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:56:17,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:56:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:56:18,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065194026] [2020-10-27 15:56:18,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:18,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:56:18,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718514919] [2020-10-27 15:56:18,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:56:18,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:18,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:56:18,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:56:18,683 INFO L87 Difference]: Start difference. First operand 5070 states and 7438 transitions. Second operand 5 states. [2020-10-27 15:56:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:29,291 INFO L93 Difference]: Finished difference Result 15210 states and 22677 transitions. [2020-10-27 15:56:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:29,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 805 [2020-10-27 15:56:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:29,363 INFO L225 Difference]: With dead ends: 15210 [2020-10-27 15:56:29,364 INFO L226 Difference]: Without dead ends: 10146 [2020-10-27 15:56:29,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:56:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10146 states. [2020-10-27 15:56:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10146 to 10133. [2020-10-27 15:56:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10133 states. [2020-10-27 15:56:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10133 states to 10133 states and 14576 transitions. [2020-10-27 15:56:29,717 INFO L78 Accepts]: Start accepts. Automaton has 10133 states and 14576 transitions. Word has length 805 [2020-10-27 15:56:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:29,719 INFO L481 AbstractCegarLoop]: Abstraction has 10133 states and 14576 transitions. [2020-10-27 15:56:29,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 10133 states and 14576 transitions. [2020-10-27 15:56:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-27 15:56:29,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:29,757 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:29,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:56:29,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:29,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:29,763 INFO L82 PathProgramCache]: Analyzing trace with hash 34133668, now seen corresponding path program 1 times [2020-10-27 15:56:29,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:29,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370228595] [2020-10-27 15:56:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:34,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-27 15:56:34,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:56:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 15:56:34,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:56:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 15:56:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-27 15:56:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:35,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:35,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:56:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:56:35,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:35,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 15:56:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:56:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 15:56:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 15:56:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 15:56:36,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370228595] [2020-10-27 15:56:36,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:36,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:56:36,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095310905] [2020-10-27 15:56:36,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:56:36,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:36,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:56:36,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:56:36,299 INFO L87 Difference]: Start difference. First operand 10133 states and 14576 transitions. Second operand 5 states. [2020-10-27 15:56:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:46,869 INFO L93 Difference]: Finished difference Result 25334 states and 37753 transitions. [2020-10-27 15:56:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:46,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 860 [2020-10-27 15:56:46,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:46,945 INFO L225 Difference]: With dead ends: 25334 [2020-10-27 15:56:46,945 INFO L226 Difference]: Without dead ends: 15207 [2020-10-27 15:56:46,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:56:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15207 states. [2020-10-27 15:56:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15207 to 15203. [2020-10-27 15:56:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15203 states. [2020-10-27 15:56:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15203 states to 15203 states and 20974 transitions. [2020-10-27 15:56:47,383 INFO L78 Accepts]: Start accepts. Automaton has 15203 states and 20974 transitions. Word has length 860 [2020-10-27 15:56:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:47,385 INFO L481 AbstractCegarLoop]: Abstraction has 15203 states and 20974 transitions. [2020-10-27 15:56:47,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 15203 states and 20974 transitions. [2020-10-27 15:56:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-27 15:56:47,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:47,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:56:47,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:56:47,441 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash -502278274, now seen corresponding path program 1 times [2020-10-27 15:56:47,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:47,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808072243] [2020-10-27 15:56:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-27 15:56:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:56:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 15:56:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 15:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-27 15:56:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:52,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:56:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:56:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 15:56:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:52,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:52,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 15:56:52,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:56:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:56:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:56:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 15:56:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-27 15:56:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:56:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:56:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-27 15:56:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 15:56:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808072243] [2020-10-27 15:56:55,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:55,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:56:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167800595] [2020-10-27 15:56:55,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:56:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:55,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:56:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:56:55,027 INFO L87 Difference]: Start difference. First operand 15203 states and 20974 transitions. Second operand 7 states. [2020-10-27 15:57:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:12,970 INFO L93 Difference]: Finished difference Result 44419 states and 65232 transitions. [2020-10-27 15:57:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:57:12,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-27 15:57:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:13,118 INFO L225 Difference]: With dead ends: 44419 [2020-10-27 15:57:13,118 INFO L226 Difference]: Without dead ends: 29222 [2020-10-27 15:57:13,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:57:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29222 states. [2020-10-27 15:57:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29222 to 28916. [2020-10-27 15:57:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28916 states. [2020-10-27 15:57:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28916 states to 28916 states and 37952 transitions. [2020-10-27 15:57:14,215 INFO L78 Accepts]: Start accepts. Automaton has 28916 states and 37952 transitions. Word has length 1012 [2020-10-27 15:57:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:14,216 INFO L481 AbstractCegarLoop]: Abstraction has 28916 states and 37952 transitions. [2020-10-27 15:57:14,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:57:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 28916 states and 37952 transitions. [2020-10-27 15:57:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2020-10-27 15:57:14,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:14,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:57:14,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:57:14,312 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1292542606, now seen corresponding path program 1 times [2020-10-27 15:57:14,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:14,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125597100] [2020-10-27 15:57:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:19,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:19,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1076 [2020-10-27 15:57:19,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:57:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-27 15:57:19,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:57:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 15:57:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-27 15:57:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:19,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:19,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:57:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:57:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 15:57:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:19,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:19,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 15:57:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 15:57:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:20,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:20,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 15:57:20,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-27 15:57:20,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:57:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:57:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-27 15:57:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:57:21,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125597100] [2020-10-27 15:57:21,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:21,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:57:21,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830611754] [2020-10-27 15:57:21,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:57:21,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:57:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:57:21,084 INFO L87 Difference]: Start difference. First operand 28916 states and 37952 transitions. Second operand 7 states. [2020-10-27 15:57:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:39,781 INFO L93 Difference]: Finished difference Result 92554 states and 127183 transitions. [2020-10-27 15:57:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:57:39,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1054 [2020-10-27 15:57:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:40,040 INFO L225 Difference]: With dead ends: 92554 [2020-10-27 15:57:40,040 INFO L226 Difference]: Without dead ends: 64474 [2020-10-27 15:57:40,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:57:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64474 states. [2020-10-27 15:57:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64474 to 62701. [2020-10-27 15:57:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62701 states. [2020-10-27 15:57:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62701 states to 62701 states and 80412 transitions. [2020-10-27 15:57:42,144 INFO L78 Accepts]: Start accepts. Automaton has 62701 states and 80412 transitions. Word has length 1054 [2020-10-27 15:57:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:42,145 INFO L481 AbstractCegarLoop]: Abstraction has 62701 states and 80412 transitions. [2020-10-27 15:57:42,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:57:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 62701 states and 80412 transitions. [2020-10-27 15:57:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2020-10-27 15:57:42,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:42,706 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:57:42,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:57:42,707 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash 784381472, now seen corresponding path program 1 times [2020-10-27 15:57:42,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:42,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454292340] [2020-10-27 15:57:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:47,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1332 [2020-10-27 15:57:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:57:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 15:57:47,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:57:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-27 15:57:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-27 15:57:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:48,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:48,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:57:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:57:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:57:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 15:57:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:48,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:57:48,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:57:48,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 15:57:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 15:57:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:48,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:57:48,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:57:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:57:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-27 15:57:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 351 [2020-10-27 15:57:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 15:57:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:49,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:49,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:57:49,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 665 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-27 15:57:50,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454292340] [2020-10-27 15:57:50,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:50,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:57:50,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979016455] [2020-10-27 15:57:50,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:57:50,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:57:50,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:57:50,876 INFO L87 Difference]: Start difference. First operand 62701 states and 80412 transitions. Second operand 8 states. [2020-10-27 15:58:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:58:11,487 INFO L93 Difference]: Finished difference Result 170222 states and 231077 transitions. [2020-10-27 15:58:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:58:11,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1304 [2020-10-27 15:58:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:58:12,007 INFO L225 Difference]: With dead ends: 170222 [2020-10-27 15:58:12,007 INFO L226 Difference]: Without dead ends: 108357 [2020-10-27 15:58:12,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:58:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108357 states. [2020-10-27 15:58:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108357 to 107559. [2020-10-27 15:58:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107559 states. [2020-10-27 15:58:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107559 states to 107559 states and 137189 transitions. [2020-10-27 15:58:16,105 INFO L78 Accepts]: Start accepts. Automaton has 107559 states and 137189 transitions. Word has length 1304 [2020-10-27 15:58:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:58:16,107 INFO L481 AbstractCegarLoop]: Abstraction has 107559 states and 137189 transitions. [2020-10-27 15:58:16,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:58:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 107559 states and 137189 transitions. [2020-10-27 15:58:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2020-10-27 15:58:16,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:16,745 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:58:16,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:58:16,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:16,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash -125544734, now seen corresponding path program 1 times [2020-10-27 15:58:16,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:16,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853764357] [2020-10-27 15:58:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:21,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1442 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-27 15:58:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:58:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:58:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 15:58:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 15:58:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:58:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 15:58:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 15:58:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:22,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:58:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 15:58:22,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:58:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 15:58:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 15:58:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-27 15:58:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 351 [2020-10-27 15:58:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 15:58:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:58:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:58:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 880 proven. 2 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2020-10-27 15:58:24,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853764357] [2020-10-27 15:58:24,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:58:24,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:58:24,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603451251] [2020-10-27 15:58:24,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:58:24,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:58:24,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:58:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:58:24,662 INFO L87 Difference]: Start difference. First operand 107559 states and 137189 transitions. Second operand 7 states. [2020-10-27 15:58:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:58:43,368 INFO L93 Difference]: Finished difference Result 219394 states and 287288 transitions. [2020-10-27 15:58:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:58:43,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1412 [2020-10-27 15:58:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:58:43,872 INFO L225 Difference]: With dead ends: 219394 [2020-10-27 15:58:43,873 INFO L226 Difference]: Without dead ends: 112677 [2020-10-27 15:58:44,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:58:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112677 states.