/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:46:05,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:46:05,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:46:05,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:46:05,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:46:05,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:46:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:46:05,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:46:05,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:46:05,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:46:05,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:46:05,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:46:05,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:46:05,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:46:05,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:46:05,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:46:05,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:46:05,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:46:05,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:46:05,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:46:05,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:46:05,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:46:05,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:46:05,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:46:05,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:46:05,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:46:05,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:46:05,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:46:05,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:46:05,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:46:05,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:46:05,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:46:05,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:46:05,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:46:05,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:46:05,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:46:05,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:46:05,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:46:05,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:46:05,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:46:05,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:46:05,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:46:05,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:46:05,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:46:05,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:46:05,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:46:05,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:46:05,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:46:05,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:46:05,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:46:05,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:46:05,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:46:05,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:46:05,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:46:05,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:46:05,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:46:05,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:46:05,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:46:05,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:46:05,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:46:05,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:46:05,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:46:05,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:46:05,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:46:05,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:46:05,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:46:05,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:46:06,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:46:06,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:46:06,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:46:06,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:46:06,292 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:46:06,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-27 17:46:06,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67739985c/8a5ede28206f40f788825ce3503660c8/FLAG35a34ae13 [2020-10-27 17:46:07,413 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:46:07,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-27 17:46:07,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67739985c/8a5ede28206f40f788825ce3503660c8/FLAG35a34ae13 [2020-10-27 17:46:07,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67739985c/8a5ede28206f40f788825ce3503660c8 [2020-10-27 17:46:07,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:46:07,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:46:07,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:46:07,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:46:07,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:46:07,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:07" (1/1) ... [2020-10-27 17:46:07,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b073e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:07, skipping insertion in model container [2020-10-27 17:46:07,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:07" (1/1) ... [2020-10-27 17:46:07,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:46:08,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:46:09,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:46:09,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:46:10,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:46:10,240 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:46:10,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10 WrapperNode [2020-10-27 17:46:10,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:46:10,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:46:10,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:46:10,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:46:10,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... [2020-10-27 17:46:10,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:46:10,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:46:10,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:46:10,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:46:10,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:46:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:46:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:46:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:46:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:46:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:46:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:46:15,862 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:46:15,863 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:46:15,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:15 BoogieIcfgContainer [2020-10-27 17:46:15,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:46:15,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:46:15,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:46:15,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:46:15,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:46:07" (1/3) ... [2020-10-27 17:46:15,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e94847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:15, skipping insertion in model container [2020-10-27 17:46:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:10" (2/3) ... [2020-10-27 17:46:15,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e94847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:15, skipping insertion in model container [2020-10-27 17:46:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:15" (3/3) ... [2020-10-27 17:46:15,882 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label34.c [2020-10-27 17:46:15,894 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:46:15,899 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:46:15,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:46:15,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:46:15,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:46:15,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:46:15,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:46:15,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:46:15,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:46:15,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:46:15,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:46:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:46:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 17:46:16,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:16,008 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] [2020-10-27 17:46:16,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1074996300, now seen corresponding path program 1 times [2020-10-27 17:46:16,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:16,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802049914] [2020-10-27 17:46:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:16,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:16,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 17:46:16,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-27 17:46:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:46:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:46:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:46:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:46:16,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:16,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:46:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:46:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:16,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802049914] [2020-10-27 17:46:16,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:46:16,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:46:16,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665603132] [2020-10-27 17:46:16,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:16,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:16,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:16,945 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:46:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:28,224 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:46:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:28,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 17:46:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:28,258 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:46:28,258 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:46:28,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:46:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:46:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:46:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-27 17:46:28,431 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 23 [2020-10-27 17:46:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:28,431 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-27 17:46:28,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-27 17:46:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 17:46:28,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:28,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:46:28,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:46:28,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:28,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1578486569, now seen corresponding path program 1 times [2020-10-27 17:46:28,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:28,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278199517] [2020-10-27 17:46:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:29,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:46:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:46:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-27 17:46:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:46:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:46:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:46:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:46:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:46:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:30,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:30,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:46:30,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:46:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:46:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:30,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278199517] [2020-10-27 17:46:30,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:30,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:30,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609947746] [2020-10-27 17:46:30,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:30,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:30,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:30,118 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 5 states. [2020-10-27 17:46:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:40,423 INFO L93 Difference]: Finished difference Result 4678 states and 8592 transitions. [2020-10-27 17:46:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:40,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-27 17:46:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:40,447 INFO L225 Difference]: With dead ends: 4678 [2020-10-27 17:46:40,447 INFO L226 Difference]: Without dead ends: 3130 [2020-10-27 17:46:40,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2020-10-27 17:46:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 3115. [2020-10-27 17:46:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3115 states. [2020-10-27 17:46:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5326 transitions. [2020-10-27 17:46:40,555 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5326 transitions. Word has length 96 [2020-10-27 17:46:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:40,556 INFO L481 AbstractCegarLoop]: Abstraction has 3115 states and 5326 transitions. [2020-10-27 17:46:40,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5326 transitions. [2020-10-27 17:46:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 17:46:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:40,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:46:40,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:46:40,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1786283987, now seen corresponding path program 1 times [2020-10-27 17:46:40,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:40,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583798870] [2020-10-27 17:46:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 17:46:41,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:46:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-27 17:46:41,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:46:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:46:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:46:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:41,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:46:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:46:41,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:46:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:41,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583798870] [2020-10-27 17:46:41,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:41,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:41,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636841082] [2020-10-27 17:46:41,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:41,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:41,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:41,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:41,562 INFO L87 Difference]: Start difference. First operand 3115 states and 5326 transitions. Second operand 5 states. [2020-10-27 17:46:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:53,084 INFO L93 Difference]: Finished difference Result 9345 states and 16212 transitions. [2020-10-27 17:46:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:53,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 17:46:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:53,122 INFO L225 Difference]: With dead ends: 9345 [2020-10-27 17:46:53,122 INFO L226 Difference]: Without dead ends: 6236 [2020-10-27 17:46:53,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2020-10-27 17:46:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 6224. [2020-10-27 17:46:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-10-27 17:46:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 9303 transitions. [2020-10-27 17:46:53,315 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 9303 transitions. Word has length 98 [2020-10-27 17:46:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:53,315 INFO L481 AbstractCegarLoop]: Abstraction has 6224 states and 9303 transitions. [2020-10-27 17:46:53,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 9303 transitions. [2020-10-27 17:46:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 17:46:53,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:53,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:46:53,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:46:53,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:53,319 INFO L82 PathProgramCache]: Analyzing trace with hash 668371265, now seen corresponding path program 1 times [2020-10-27 17:46:53,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:53,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17480591] [2020-10-27 17:46:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:53,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:54,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:54,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 17:46:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:46:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:54,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:54,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:46:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:54,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:46:54,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 17:46:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:46:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:54,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17480591] [2020-10-27 17:46:54,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:54,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:54,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087797203] [2020-10-27 17:46:54,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:54,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:54,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:54,465 INFO L87 Difference]: Start difference. First operand 6224 states and 9303 transitions. Second operand 5 states. [2020-10-27 17:47:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:06,779 INFO L93 Difference]: Finished difference Result 18660 states and 28479 transitions. [2020-10-27 17:47:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:06,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 17:47:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:06,838 INFO L225 Difference]: With dead ends: 18660 [2020-10-27 17:47:06,839 INFO L226 Difference]: Without dead ends: 12442 [2020-10-27 17:47:06,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12442 states. [2020-10-27 17:47:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12442 to 12438. [2020-10-27 17:47:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12438 states. [2020-10-27 17:47:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17187 transitions. [2020-10-27 17:47:07,210 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17187 transitions. Word has length 108 [2020-10-27 17:47:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:07,210 INFO L481 AbstractCegarLoop]: Abstraction has 12438 states and 17187 transitions. [2020-10-27 17:47:07,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17187 transitions. [2020-10-27 17:47:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 17:47:07,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:07,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:07,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:47:07,214 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:07,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:07,214 INFO L82 PathProgramCache]: Analyzing trace with hash 779255485, now seen corresponding path program 1 times [2020-10-27 17:47:07,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:07,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901851055] [2020-10-27 17:47:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 17:47:08,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:47:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-27 17:47:08,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 17:47:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:47:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:08,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:08,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:47:08,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 17:47:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:47:08,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:08,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901851055] [2020-10-27 17:47:08,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:08,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:08,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413350175] [2020-10-27 17:47:08,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:08,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:08,751 INFO L87 Difference]: Start difference. First operand 12438 states and 17187 transitions. Second operand 5 states. [2020-10-27 17:47:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:21,806 INFO L93 Difference]: Finished difference Result 31085 states and 44711 transitions. [2020-10-27 17:47:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:21,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 17:47:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:21,890 INFO L225 Difference]: With dead ends: 31085 [2020-10-27 17:47:21,891 INFO L226 Difference]: Without dead ends: 18653 [2020-10-27 17:47:21,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2020-10-27 17:47:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18649. [2020-10-27 17:47:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18649 states. [2020-10-27 17:47:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18649 states to 18649 states and 25977 transitions. [2020-10-27 17:47:22,424 INFO L78 Accepts]: Start accepts. Automaton has 18649 states and 25977 transitions. Word has length 143 [2020-10-27 17:47:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:22,425 INFO L481 AbstractCegarLoop]: Abstraction has 18649 states and 25977 transitions. [2020-10-27 17:47:22,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand 18649 states and 25977 transitions. [2020-10-27 17:47:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 17:47:22,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:22,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:22,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:47:22,435 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1163851024, now seen corresponding path program 1 times [2020-10-27 17:47:22,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:22,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542992434] [2020-10-27 17:47:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:26,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 17:47:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4069 [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:47:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:26,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:26,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:26,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:47:26,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:26,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:47:26,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:47:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 17:47:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:26,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:26,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 17:47:26,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 17:47:26,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 17:47:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 17:47:27,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542992434] [2020-10-27 17:47:27,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:27,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:27,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134831383] [2020-10-27 17:47:27,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:27,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:27,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:27,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:27,024 INFO L87 Difference]: Start difference. First operand 18649 states and 25977 transitions. Second operand 5 states. [2020-10-27 17:47:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:42,449 INFO L93 Difference]: Finished difference Result 46612 states and 66894 transitions. [2020-10-27 17:47:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:42,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-27 17:47:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:42,563 INFO L225 Difference]: With dead ends: 46612 [2020-10-27 17:47:42,563 INFO L226 Difference]: Without dead ends: 27969 [2020-10-27 17:47:42,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27969 states. [2020-10-27 17:47:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27969 to 27965. [2020-10-27 17:47:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27965 states. [2020-10-27 17:47:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27965 states to 27965 states and 39459 transitions. [2020-10-27 17:47:43,337 INFO L78 Accepts]: Start accepts. Automaton has 27965 states and 39459 transitions. Word has length 212 [2020-10-27 17:47:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:43,338 INFO L481 AbstractCegarLoop]: Abstraction has 27965 states and 39459 transitions. [2020-10-27 17:47:43,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 27965 states and 39459 transitions. [2020-10-27 17:47:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 17:47:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:43,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:43,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:47:43,347 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1296623292, now seen corresponding path program 1 times [2020-10-27 17:47:43,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:43,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587980570] [2020-10-27 17:47:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 17:47:48,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:47:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 17:47:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 17:47:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:47:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:47:48,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:48,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:47:48,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 17:47:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:48,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 17:47:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 17:47:48,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587980570] [2020-10-27 17:47:48,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:48,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668265101] [2020-10-27 17:47:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:48,840 INFO L87 Difference]: Start difference. First operand 27965 states and 39459 transitions. Second operand 5 states. [2020-10-27 17:48:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:03,560 INFO L93 Difference]: Finished difference Result 69869 states and 103209 transitions. [2020-10-27 17:48:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:03,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 17:48:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:03,724 INFO L225 Difference]: With dead ends: 69869 [2020-10-27 17:48:03,725 INFO L226 Difference]: Without dead ends: 41910 [2020-10-27 17:48:03,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:48:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41910 states. [2020-10-27 17:48:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41910 to 41906. [2020-10-27 17:48:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41906 states. [2020-10-27 17:48:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41906 states to 41906 states and 60581 transitions. [2020-10-27 17:48:04,977 INFO L78 Accepts]: Start accepts. Automaton has 41906 states and 60581 transitions. Word has length 222 [2020-10-27 17:48:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:04,978 INFO L481 AbstractCegarLoop]: Abstraction has 41906 states and 60581 transitions. [2020-10-27 17:48:04,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:48:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 41906 states and 60581 transitions. [2020-10-27 17:48:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-27 17:48:05,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:05,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:48:05,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:48:05,004 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:05,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:05,005 INFO L82 PathProgramCache]: Analyzing trace with hash 670489144, now seen corresponding path program 1 times [2020-10-27 17:48:05,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:05,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385093715] [2020-10-27 17:48:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:10,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-27 17:48:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:48:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:10,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:10,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:48:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:48:10,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:48:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:10,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:48:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 17:48:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:10,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-27 17:48:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 17:48:10,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385093715] [2020-10-27 17:48:10,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:10,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:48:10,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387653035] [2020-10-27 17:48:10,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:48:10,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:10,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:48:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:10,975 INFO L87 Difference]: Start difference. First operand 41906 states and 60581 transitions. Second operand 5 states. [2020-10-27 17:48:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:26,371 INFO L93 Difference]: Finished difference Result 97745 states and 146032 transitions. [2020-10-27 17:48:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:26,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-27 17:48:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:26,589 INFO L225 Difference]: With dead ends: 97745 [2020-10-27 17:48:26,589 INFO L226 Difference]: Without dead ends: 55845 [2020-10-27 17:48:26,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 17:48:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55845 states. [2020-10-27 17:48:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55845 to 55841. [2020-10-27 17:48:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55841 states. [2020-10-27 17:48:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55841 states to 55841 states and 81456 transitions. [2020-10-27 17:48:28,969 INFO L78 Accepts]: Start accepts. Automaton has 55841 states and 81456 transitions. Word has length 312 [2020-10-27 17:48:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:28,970 INFO L481 AbstractCegarLoop]: Abstraction has 55841 states and 81456 transitions. [2020-10-27 17:48:28,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:48:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 55841 states and 81456 transitions. [2020-10-27 17:48:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-27 17:48:29,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:29,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:48:29,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:48:29,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:29,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1400976109, now seen corresponding path program 1 times [2020-10-27 17:48:29,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:29,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768137639] [2020-10-27 17:48:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-27 17:48:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:48:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:48:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:34,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:48:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-27 17:48:35,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 17:48:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 379 [2020-10-27 17:48:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:48:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:35,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 17:48:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:48:35,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 17:48:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:48:35,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768137639] [2020-10-27 17:48:35,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:35,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:48:35,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975404479] [2020-10-27 17:48:35,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:48:35,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:35,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:48:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:35,642 INFO L87 Difference]: Start difference. First operand 55841 states and 81456 transitions. Second operand 5 states. [2020-10-27 17:48:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:52,263 INFO L93 Difference]: Finished difference Result 147246 states and 222447 transitions. [2020-10-27 17:48:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:52,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2020-10-27 17:48:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:52,593 INFO L225 Difference]: With dead ends: 147246 [2020-10-27 17:48:52,593 INFO L226 Difference]: Without dead ends: 91411 [2020-10-27 17:48:52,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 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 17:48:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91411 states. [2020-10-27 17:48:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91411 to 91407. [2020-10-27 17:48:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91407 states. [2020-10-27 17:48:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91407 states to 91407 states and 126051 transitions. [2020-10-27 17:48:54,766 INFO L78 Accepts]: Start accepts. Automaton has 91407 states and 126051 transitions. Word has length 408 [2020-10-27 17:48:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:54,767 INFO L481 AbstractCegarLoop]: Abstraction has 91407 states and 126051 transitions. [2020-10-27 17:48:54,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:48:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 91407 states and 126051 transitions. [2020-10-27 17:48:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-27 17:48:55,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:55,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:48:55,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:48:55,198 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1435874934, now seen corresponding path program 1 times [2020-10-27 17:48:55,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:55,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599535995] [2020-10-27 17:48:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:57,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-27 17:48:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-27 17:48:57,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:48:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 17:48:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:48:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:57,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:57,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:48:57,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 17:48:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 17:48:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 17:48:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:58,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 17:48:58,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 17:48:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 463 [2020-10-27 17:48:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:48:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:58,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:58,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:48:58,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:48:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 30 proven. 172 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 17:48:58,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599535995] [2020-10-27 17:48:58,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:58,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:48:58,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549868998] [2020-10-27 17:48:58,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:48:58,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:58,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:48:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:48:58,962 INFO L87 Difference]: Start difference. First operand 91407 states and 126051 transitions. Second operand 8 states. [2020-10-27 17:49:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:24,861 INFO L93 Difference]: Finished difference Result 229743 states and 330127 transitions. [2020-10-27 17:49:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 17:49:24,863 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 663 [2020-10-27 17:49:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:25,460 INFO L225 Difference]: With dead ends: 229743 [2020-10-27 17:49:25,460 INFO L226 Difference]: Without dead ends: 138342 [2020-10-27 17:49:25,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 17:49:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138342 states. [2020-10-27 17:49:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138342 to 137475. [2020-10-27 17:49:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137475 states. [2020-10-27 17:49:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137475 states to 137475 states and 177168 transitions. [2020-10-27 17:49:28,753 INFO L78 Accepts]: Start accepts. Automaton has 137475 states and 177168 transitions. Word has length 663 [2020-10-27 17:49:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:28,753 INFO L481 AbstractCegarLoop]: Abstraction has 137475 states and 177168 transitions. [2020-10-27 17:49:28,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:49:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 137475 states and 177168 transitions. [2020-10-27 17:49:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-27 17:49:28,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:28,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:49:28,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:49:28,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash 906067251, now seen corresponding path program 1 times [2020-10-27 17:49:28,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:28,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055012500] [2020-10-27 17:49:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-27 17:49:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:49:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 17:49:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 17:49:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 17:49:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:34,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 17:49:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:49:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:49:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 17:49:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:35,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-27 17:49:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:35,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:35,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 17:49:35,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 17:49:35,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 463 [2020-10-27 17:49:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:49:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:35,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:49:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 194 proven. 176 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 17:49:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055012500] [2020-10-27 17:49:36,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:36,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:49:36,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522709959] [2020-10-27 17:49:36,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:49:36,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:36,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:49:36,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:49:36,359 INFO L87 Difference]: Start difference. First operand 137475 states and 177168 transitions. Second operand 7 states.