/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/Problem17_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:48:15,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:48:15,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:48:15,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:48:15,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:48:15,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:48:15,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:48:15,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:48:15,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:48:15,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:48:15,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:48:15,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:48:15,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:48:15,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:48:15,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:48:15,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:48:15,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:48:15,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:48:15,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:48:15,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:48:15,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:48:15,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:48:15,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:48:15,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:48:15,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:48:15,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:48:15,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:48:15,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:48:15,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:48:15,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:48:15,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:48:15,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:48:15,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:48:15,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:48:15,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:48:15,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:48:15,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:48:15,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:48:15,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:48:15,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:48:15,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:48:15,855 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 18:48:15,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:48:15,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:48:15,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:48:15,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:48:15,887 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:48:15,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:48:15,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:48:15,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:48:15,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:48:15,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:48:15,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:48:15,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:48:15,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:48:15,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:48:15,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:48:15,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:48:15,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:48:15,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:48:15,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:48:15,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:48:15,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:48:15,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:48:15,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:48:15,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:48:15,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:48:15,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:48:15,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:48:15,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:48:15,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:48:15,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:48:16,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:48:16,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:48:16,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:48:16,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:48:16,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:48:16,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-27 18:48:16,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ded1a35/eaa00d2780ee41b5943c0a45556b3d89/FLAGd8e86ec11 [2020-10-27 18:48:17,271 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:48:17,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-27 18:48:17,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ded1a35/eaa00d2780ee41b5943c0a45556b3d89/FLAGd8e86ec11 [2020-10-27 18:48:17,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ded1a35/eaa00d2780ee41b5943c0a45556b3d89 [2020-10-27 18:48:17,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:48:17,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:48:17,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:48:17,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:48:17,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:48:17,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:48:17" (1/1) ... [2020-10-27 18:48:17,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:17, skipping insertion in model container [2020-10-27 18:48:17,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:48:17" (1/1) ... [2020-10-27 18:48:17,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:48:17,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:48:18,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:48:18,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:48:19,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:48:19,248 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:48:19,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19 WrapperNode [2020-10-27 18:48:19,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:48:19,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:48:19,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:48:19,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:48:19,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (1/1) ... [2020-10-27 18:48:19,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:48:19,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:48:19,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:48:19,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:48:19,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (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 18:48:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:48:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:48:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:48:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:48:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:48:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:48:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:48:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:48:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:48:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:48:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:48:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:48:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:48:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:48:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:48:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:48:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:48:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:48:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:48:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:48:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:48:29,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:48:29,178 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:48:29,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:48:29 BoogieIcfgContainer [2020-10-27 18:48:29,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:48:29,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:48:29,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:48:29,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:48:29,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:48:17" (1/3) ... [2020-10-27 18:48:29,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b887261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:48:29, skipping insertion in model container [2020-10-27 18:48:29,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:48:19" (2/3) ... [2020-10-27 18:48:29,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b887261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:48:29, skipping insertion in model container [2020-10-27 18:48:29,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:48:29" (3/3) ... [2020-10-27 18:48:29,199 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label05.c [2020-10-27 18:48:29,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:48:29,221 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:48:29,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:48:29,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:48:29,290 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:48:29,290 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:48:29,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:48:29,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:48:29,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:48:29,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:48:29,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:48:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:48:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 18:48:29,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:29,354 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] [2020-10-27 18:48:29,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1139014578, now seen corresponding path program 1 times [2020-10-27 18:48:29,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:29,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565679454] [2020-10-27 18:48:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 18:48:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-27 18:48:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:48:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:48:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:48:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:48:30,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:30,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:30,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:48:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:48:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:48:30,645 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 18:48:30,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565679454] [2020-10-27 18:48:30,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:48:30,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:48:30,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84569677] [2020-10-27 18:48:30,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:48:30,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:48:30,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:48:30,678 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 18:48:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:44,921 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-27 18:48:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:48:44,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-27 18:48:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:44,962 INFO L225 Difference]: With dead ends: 1697 [2020-10-27 18:48:44,962 INFO L226 Difference]: Without dead ends: 1013 [2020-10-27 18:48:44,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:48:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-27 18:48:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-27 18:48:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-27 18:48:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-27 18:48:45,112 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 68 [2020-10-27 18:48:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:45,113 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-27 18:48:45,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:48:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-27 18:48:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 18:48:45,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:45,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:48:45,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:48:45,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:45,122 INFO L82 PathProgramCache]: Analyzing trace with hash 213001810, now seen corresponding path program 1 times [2020-10-27 18:48:45,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:45,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814947364] [2020-10-27 18:48:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:48,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:48,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 18:48:48,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:48:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-10-27 18:48:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:48:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:48:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:48:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:48,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:48:48,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:48,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:48:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:48:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:48:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:48:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:48:48,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814947364] [2020-10-27 18:48:48,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:48,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:48:48,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93546510] [2020-10-27 18:48:48,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:48:48,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:48,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:48:48,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:48:48,642 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 5 states. [2020-10-27 18:49:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:49:00,472 INFO L93 Difference]: Finished difference Result 2922 states and 4546 transitions. [2020-10-27 18:49:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:49:00,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 18:49:00,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:49:00,486 INFO L225 Difference]: With dead ends: 2922 [2020-10-27 18:49:00,487 INFO L226 Difference]: Without dead ends: 1925 [2020-10-27 18:49:00,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:49:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-10-27 18:49:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1898. [2020-10-27 18:49:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-27 18:49:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2705 transitions. [2020-10-27 18:49:00,587 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2705 transitions. Word has length 139 [2020-10-27 18:49:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:49:00,590 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 2705 transitions. [2020-10-27 18:49:00,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:49:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2705 transitions. [2020-10-27 18:49:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 18:49:00,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:00,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:49:00,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:49:00,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:00,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1942781409, now seen corresponding path program 1 times [2020-10-27 18:49:00,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:00,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22094168] [2020-10-27 18:49:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:00,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:49:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:49:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-10-27 18:49:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 18:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:49:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:49:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:49:05,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:49:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:49:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:05,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:49:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:05,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:49:05,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:49:05,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:49:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:05,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22094168] [2020-10-27 18:49:05,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:49:05,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:49:05,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748418287] [2020-10-27 18:49:05,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:49:05,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:05,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:49:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:49:05,322 INFO L87 Difference]: Start difference. First operand 1898 states and 2705 transitions. Second operand 5 states. [2020-10-27 18:49:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:49:19,436 INFO L93 Difference]: Finished difference Result 4690 states and 6908 transitions. [2020-10-27 18:49:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:49:19,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 18:49:19,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:49:19,457 INFO L225 Difference]: With dead ends: 4690 [2020-10-27 18:49:19,457 INFO L226 Difference]: Without dead ends: 2798 [2020-10-27 18:49:19,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:49:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-10-27 18:49:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2792. [2020-10-27 18:49:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-27 18:49:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 3821 transitions. [2020-10-27 18:49:19,567 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 3821 transitions. Word has length 142 [2020-10-27 18:49:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:49:19,568 INFO L481 AbstractCegarLoop]: Abstraction has 2792 states and 3821 transitions. [2020-10-27 18:49:19,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:49:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 3821 transitions. [2020-10-27 18:49:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 18:49:19,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:19,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:49:19,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:49:19,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:19,573 INFO L82 PathProgramCache]: Analyzing trace with hash 517656571, now seen corresponding path program 1 times [2020-10-27 18:49:19,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:19,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530930032] [2020-10-27 18:49:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:22,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 18:49:22,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:49:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2515 [2020-10-27 18:49:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 18:49:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:49:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 18:49:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:22,503 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-27 18:49:22,660 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-27 18:49:22,873 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-27 18:49:23,058 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-27 18:49:23,226 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-10-27 18:49:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:23,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:23,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:49:23,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:49:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:49:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:49:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:49:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:49:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:49:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:23,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530930032] [2020-10-27 18:49:23,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:49:23,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 18:49:23,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148074462] [2020-10-27 18:49:23,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 18:49:23,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:23,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 18:49:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:49:23,831 INFO L87 Difference]: Start difference. First operand 2792 states and 3821 transitions. Second operand 11 states. [2020-10-27 18:49:24,929 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 18:49:25,195 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-27 18:49:28,308 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-27 18:49:28,652 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-27 18:49:29,114 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-27 18:49:29,726 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2020-10-27 18:49:30,120 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-10-27 18:49:30,500 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-27 18:49:30,843 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-10-27 18:49:31,099 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-27 18:49:31,410 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-27 18:49:31,764 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-10-27 18:49:31,905 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 18:49:35,301 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-27 18:49:38,097 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 18:49:38,418 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 18:49:38,779 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 18:49:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:49:49,943 INFO L93 Difference]: Finished difference Result 5995 states and 8129 transitions. [2020-10-27 18:49:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 18:49:49,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-10-27 18:49:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:49:49,968 INFO L225 Difference]: With dead ends: 5995 [2020-10-27 18:49:49,969 INFO L226 Difference]: Without dead ends: 2796 [2020-10-27 18:49:49,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2020-10-27 18:49:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-10-27 18:49:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2792. [2020-10-27 18:49:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-27 18:49:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 3663 transitions. [2020-10-27 18:49:50,100 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 3663 transitions. Word has length 144 [2020-10-27 18:49:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:49:50,100 INFO L481 AbstractCegarLoop]: Abstraction has 2792 states and 3663 transitions. [2020-10-27 18:49:50,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 18:49:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 3663 transitions. [2020-10-27 18:49:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 18:49:50,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:50,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:49:50,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:49:50,104 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1704399042, now seen corresponding path program 1 times [2020-10-27 18:49:50,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:50,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768542648] [2020-10-27 18:49:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:52,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:49:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 18:49:52,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:49:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:52,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:52,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:52,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:49:52,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:49:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:49:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:49:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:52,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:52,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:49:52,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:49:52,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:49:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:52,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768542648] [2020-10-27 18:49:52,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:49:52,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:49:52,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731949428] [2020-10-27 18:49:52,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:49:52,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:52,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:49:52,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:49:52,450 INFO L87 Difference]: Start difference. First operand 2792 states and 3663 transitions. Second operand 5 states. [2020-10-27 18:50:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:50:09,827 INFO L93 Difference]: Finished difference Result 6494 states and 8791 transitions. [2020-10-27 18:50:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:50:09,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 18:50:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:50:09,855 INFO L225 Difference]: With dead ends: 6494 [2020-10-27 18:50:09,856 INFO L226 Difference]: Without dead ends: 3708 [2020-10-27 18:50:09,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:50:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2020-10-27 18:50:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3694. [2020-10-27 18:50:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3694 states. [2020-10-27 18:50:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4863 transitions. [2020-10-27 18:50:09,971 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4863 transitions. Word has length 147 [2020-10-27 18:50:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:50:09,972 INFO L481 AbstractCegarLoop]: Abstraction has 3694 states and 4863 transitions. [2020-10-27 18:50:09,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:50:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4863 transitions. [2020-10-27 18:50:09,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 18:50:09,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:50:09,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:50:09,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:50:09,976 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:50:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:50:09,976 INFO L82 PathProgramCache]: Analyzing trace with hash -386693576, now seen corresponding path program 1 times [2020-10-27 18:50:09,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:50:09,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399622409] [2020-10-27 18:50:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:50:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:11,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 18:50:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:50:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-27 18:50:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:50:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 18:50:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:50:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:50:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:11,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:50:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:50:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:50:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:11,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:11,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 18:50:11,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 18:50:11,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:50:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 18:50:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:50:11,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399622409] [2020-10-27 18:50:11,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:50:11,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:50:11,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146325496] [2020-10-27 18:50:11,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:50:11,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:50:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:50:11,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:50:11,661 INFO L87 Difference]: Start difference. First operand 3694 states and 4863 transitions. Second operand 6 states. [2020-10-27 18:50:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:50:38,402 INFO L93 Difference]: Finished difference Result 14402 states and 19523 transitions. [2020-10-27 18:50:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:50:38,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-27 18:50:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:50:38,533 INFO L225 Difference]: With dead ends: 14402 [2020-10-27 18:50:38,533 INFO L226 Difference]: Without dead ends: 10714 [2020-10-27 18:50:38,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:50:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2020-10-27 18:50:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 9411. [2020-10-27 18:50:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9411 states. [2020-10-27 18:50:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9411 states to 9411 states and 12285 transitions. [2020-10-27 18:50:38,966 INFO L78 Accepts]: Start accepts. Automaton has 9411 states and 12285 transitions. Word has length 158 [2020-10-27 18:50:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:50:38,967 INFO L481 AbstractCegarLoop]: Abstraction has 9411 states and 12285 transitions. [2020-10-27 18:50:38,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:50:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9411 states and 12285 transitions. [2020-10-27 18:50:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 18:50:38,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:50:38,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:50:38,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:50:38,973 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:50:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:50:38,974 INFO L82 PathProgramCache]: Analyzing trace with hash 263901131, now seen corresponding path program 1 times [2020-10-27 18:50:38,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:50:38,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893093933] [2020-10-27 18:50:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:50:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:39,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3970 [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:50:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 18:50:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:50:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:50:43,202 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:50:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:50:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:50:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:50:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:50:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:50:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:50:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:43,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 18:50:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:50:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:50:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 18:50:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:50:43,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893093933] [2020-10-27 18:50:43,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:50:43,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:50:43,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891123216] [2020-10-27 18:50:43,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:50:43,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:50:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:50:43,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:50:43,510 INFO L87 Difference]: Start difference. First operand 9411 states and 12285 transitions. Second operand 5 states. [2020-10-27 18:50:44,748 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 18:51:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:51:11,010 INFO L93 Difference]: Finished difference Result 25886 states and 34418 transitions. [2020-10-27 18:51:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:51:11,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-27 18:51:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:51:11,137 INFO L225 Difference]: With dead ends: 25886 [2020-10-27 18:51:11,137 INFO L226 Difference]: Without dead ends: 16481 [2020-10-27 18:51:11,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:51:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16481 states. [2020-10-27 18:51:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16481 to 15562. [2020-10-27 18:51:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15562 states. [2020-10-27 18:51:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 20185 transitions. [2020-10-27 18:51:11,834 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 20185 transitions. Word has length 171 [2020-10-27 18:51:11,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:51:11,835 INFO L481 AbstractCegarLoop]: Abstraction has 15562 states and 20185 transitions. [2020-10-27 18:51:11,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:51:11,836 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 20185 transitions. [2020-10-27 18:51:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 18:51:11,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:51:11,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:51:11,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:51:11,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:51:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:51:11,846 INFO L82 PathProgramCache]: Analyzing trace with hash -639451926, now seen corresponding path program 1 times [2020-10-27 18:51:11,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:51:11,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235337456] [2020-10-27 18:51:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:51:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 18:51:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:51:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 18:51:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:51:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 18:51:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 18:51:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:17,221 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2020-10-27 18:51:17,383 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:51:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:51:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:51:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:51:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:51:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 18:51:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:17,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:17,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:51:17,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 18:51:17,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:17,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:51:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:51:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:51:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 18:51:17,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235337456] [2020-10-27 18:51:17,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:51:17,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:51:17,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777030639] [2020-10-27 18:51:17,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:51:17,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:51:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:51:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:51:17,946 INFO L87 Difference]: Start difference. First operand 15562 states and 20185 transitions. Second operand 5 states. [2020-10-27 18:51:20,235 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 18:51:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:51:34,095 INFO L93 Difference]: Finished difference Result 31138 states and 40449 transitions. [2020-10-27 18:51:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:51:34,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 18:51:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:51:34,186 INFO L225 Difference]: With dead ends: 31138 [2020-10-27 18:51:34,186 INFO L226 Difference]: Without dead ends: 15566 [2020-10-27 18:51:34,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:51:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15566 states. [2020-10-27 18:51:34,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15566 to 15562. [2020-10-27 18:51:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15562 states. [2020-10-27 18:51:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 20172 transitions. [2020-10-27 18:51:34,687 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 20172 transitions. Word has length 214 [2020-10-27 18:51:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:51:34,688 INFO L481 AbstractCegarLoop]: Abstraction has 15562 states and 20172 transitions. [2020-10-27 18:51:34,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:51:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 20172 transitions. [2020-10-27 18:51:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 18:51:34,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:51:34,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:51:34,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:51:34,699 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:51:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:51:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1703624206, now seen corresponding path program 1 times [2020-10-27 18:51:34,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:51:34,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402108310] [2020-10-27 18:51:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:51:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 18:51:37,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:51:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2868 [2020-10-27 18:51:37,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:51:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-27 18:51:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 18:51:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:37,900 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:51:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:51:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:37,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:37,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:51:37,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:51:37,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:37,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:51:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:38,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 18:51:38,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 18:51:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:51:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 18:51:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:51:38,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402108310] [2020-10-27 18:51:38,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:51:38,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:51:38,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402034537] [2020-10-27 18:51:38,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:51:38,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:51:38,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:51:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:51:38,498 INFO L87 Difference]: Start difference. First operand 15562 states and 20172 transitions. Second operand 5 states. [2020-10-27 18:51:43,035 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 18:51:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:51:53,929 INFO L93 Difference]: Finished difference Result 31144 states and 40426 transitions. [2020-10-27 18:51:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:51:53,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 18:51:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:51:54,005 INFO L225 Difference]: With dead ends: 31144 [2020-10-27 18:51:54,005 INFO L226 Difference]: Without dead ends: 15566 [2020-10-27 18:51:54,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:51:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15566 states. [2020-10-27 18:51:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15566 to 15562. [2020-10-27 18:51:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15562 states. [2020-10-27 18:51:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 20163 transitions. [2020-10-27 18:51:54,503 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 20163 transitions. Word has length 222 [2020-10-27 18:51:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:51:54,504 INFO L481 AbstractCegarLoop]: Abstraction has 15562 states and 20163 transitions. [2020-10-27 18:51:54,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:51:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 20163 transitions. [2020-10-27 18:51:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 18:51:54,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:51:54,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:51:54,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:51:54,515 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:51:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:51:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash -12739744, now seen corresponding path program 1 times [2020-10-27 18:51:54,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:51:54,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634784805] [2020-10-27 18:51:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:51:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-27 18:51:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:51:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:59,751 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:51:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:51:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:51:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:51:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:51:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:51:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:59,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:51:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:51:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 18:51:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:59,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:51:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 18:52:00,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:52:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:52:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:52:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 18:52:00,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634784805] [2020-10-27 18:52:00,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:52:00,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:52:00,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868637106] [2020-10-27 18:52:00,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:52:00,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:52:00,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:52:00,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:52:00,090 INFO L87 Difference]: Start difference. First operand 15562 states and 20163 transitions. Second operand 5 states. [2020-10-27 18:52:00,246 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 68