/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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:32:49,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:32:49,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:32:49,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:32:49,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:32:49,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:32:49,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:32:49,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:32:49,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:32:49,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:32:49,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:32:49,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:32:49,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:32:49,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:32:49,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:32:49,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:32:49,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:32:49,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:32:49,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:32:49,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:32:49,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:32:49,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:32:49,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:32:49,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:32:49,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:32:49,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:32:49,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:32:49,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:32:49,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:32:49,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:32:49,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:32:49,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:32:49,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:32:49,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:32:49,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:32:49,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:32:49,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:32:49,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:32:49,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:32:49,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:32:49,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:32:49,925 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 20:32:49,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:32:49,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:32:49,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:32:49,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:32:49,956 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:32:49,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:32:49,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:32:49,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:32:49,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:32:49,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:32:49,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:32:49,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:32:49,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:32:49,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:32:49,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:32:49,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:32:49,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:32:49,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:32:49,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:32:49,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:32:49,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:32:49,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:32:49,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:32:49,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:32:49,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:32:49,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:32:49,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:32:49,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:32:49,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:32:49,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:32:50,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:32:50,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:32:50,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:32:50,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:32:50,360 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:32:50,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2020-10-27 20:32:50,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a78344c4/6e1579f2c9f84cd7b5b884dcf77cd49e/FLAGc945e080c [2020-10-27 20:32:51,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:32:51,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_05.i [2020-10-27 20:32:51,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a78344c4/6e1579f2c9f84cd7b5b884dcf77cd49e/FLAGc945e080c [2020-10-27 20:32:51,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a78344c4/6e1579f2c9f84cd7b5b884dcf77cd49e [2020-10-27 20:32:51,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:32:51,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:32:51,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:32:51,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:32:51,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:32:51,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495092f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51, skipping insertion in model container [2020-10-27 20:32:51,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:32:51,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:32:51,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:32:51,341 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:32:51,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:32:51,394 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:32:51,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51 WrapperNode [2020-10-27 20:32:51,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:32:51,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:32:51,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:32:51,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:32:51,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (1/1) ... [2020-10-27 20:32:51,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:32:51,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:32:51,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:32:51,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:32:51,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (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 20:32:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:32:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:32:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:32:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:32:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-10-27 20:32:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:32:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:32:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:32:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:32:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:32:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:32:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:32:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:32:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-10-27 20:32:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:32:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:32:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:32:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:32:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:32:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:32:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:32:52,100 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:32:52,101 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 20:32:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:32:52 BoogieIcfgContainer [2020-10-27 20:32:52,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:32:52,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:32:52,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:32:52,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:32:52,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:32:51" (1/3) ... [2020-10-27 20:32:52,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404fac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:32:52, skipping insertion in model container [2020-10-27 20:32:52,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:32:51" (2/3) ... [2020-10-27 20:32:52,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404fac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:32:52, skipping insertion in model container [2020-10-27 20:32:52,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:32:52" (3/3) ... [2020-10-27 20:32:52,119 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2020-10-27 20:32:52,132 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:32:52,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:32:52,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:32:52,196 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:32:52,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:32:52,197 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:32:52,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:32:52,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:32:52,197 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:32:52,197 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:32:52,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:32:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-27 20:32:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:32:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:52,231 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] [2020-10-27 20:32:52,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1174407567, now seen corresponding path program 1 times [2020-10-27 20:32:52,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:52,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705364500] [2020-10-27 20:32:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:52,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:52,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:32:52,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:32:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-27 20:32:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:32:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:32:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:52,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:52,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:52,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:32:52,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:52,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 20:32:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:52,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:52,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:52,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:32:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:32:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:52,957 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 20:32:52,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705364500] [2020-10-27 20:32:52,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:32:52,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:32:52,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797754081] [2020-10-27 20:32:52,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:32:52,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:52,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:32:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:32:52,983 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-27 20:32:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:53,207 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2020-10-27 20:32:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:32:53,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 20:32:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:53,220 INFO L225 Difference]: With dead ends: 84 [2020-10-27 20:32:53,220 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:32:53,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:32:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:32:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-27 20:32:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 20:32:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 20:32:53,277 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-10-27 20:32:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:53,277 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 20:32:53,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:32:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 20:32:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:32:53,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:53,279 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] [2020-10-27 20:32:53,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:32:53,279 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:53,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1858944183, now seen corresponding path program 1 times [2020-10-27 20:32:53,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:53,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376142216] [2020-10-27 20:32:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:53,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:32:53,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:32:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 20:32:53,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:32:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:32:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:32:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:53,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:53,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:32:53,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 20:32:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:32:53,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:32:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:53,581 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 20:32:53,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376142216] [2020-10-27 20:32:53,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:32:53,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:32:53,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639723829] [2020-10-27 20:32:53,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:32:53,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:32:53,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:32:53,586 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-27 20:32:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:53,763 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-27 20:32:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:32:53,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-27 20:32:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:53,765 INFO L225 Difference]: With dead ends: 63 [2020-10-27 20:32:53,765 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 20:32:53,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:32:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 20:32:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-10-27 20:32:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 20:32:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 20:32:53,777 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-27 20:32:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:53,777 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 20:32:53,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:32:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 20:32:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:32:53,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:53,779 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] [2020-10-27 20:32:53,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:32:53,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:53,780 INFO L82 PathProgramCache]: Analyzing trace with hash 253491545, now seen corresponding path program 1 times [2020-10-27 20:32:53,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:53,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817259000] [2020-10-27 20:32:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:54,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:32:54,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:32:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-27 20:32:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:32:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:32:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:32:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:32:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:32:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:54,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:32:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:32:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:32:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:32:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:32:54,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817259000] [2020-10-27 20:32:54,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:32:54,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:32:54,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230086526] [2020-10-27 20:32:54,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:32:54,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:32:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:32:54,771 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 11 states. [2020-10-27 20:32:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:55,224 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-27 20:32:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:32:55,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-27 20:32:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:55,226 INFO L225 Difference]: With dead ends: 56 [2020-10-27 20:32:55,226 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 20:32:55,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:32:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 20:32:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-10-27 20:32:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 20:32:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-27 20:32:55,238 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 22 [2020-10-27 20:32:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:55,239 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-27 20:32:55,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:32:55,239 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-27 20:32:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:32:55,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:55,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:32:55,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:32:55,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:55,242 INFO L82 PathProgramCache]: Analyzing trace with hash 398615793, now seen corresponding path program 1 times [2020-10-27 20:32:55,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:55,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190788378] [2020-10-27 20:32:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:55,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:56,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:32:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:32:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-27 20:32:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:32:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:32:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:32:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:32:56,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:32:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:32:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:56,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:32:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 20:32:56,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:32:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:32:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:32:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:32:56,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190788378] [2020-10-27 20:32:56,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:32:56,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:32:56,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377524498] [2020-10-27 20:32:56,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:32:56,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:32:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:32:56,753 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 12 states. [2020-10-27 20:32:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:57,289 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-27 20:32:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:32:57,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-27 20:32:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:57,291 INFO L225 Difference]: With dead ends: 71 [2020-10-27 20:32:57,291 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 20:32:57,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:32:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 20:32:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2020-10-27 20:32:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 20:32:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-27 20:32:57,304 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 26 [2020-10-27 20:32:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:57,304 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-27 20:32:57,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:32:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-27 20:32:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:32:57,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:57,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:32:57,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:32:57,306 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1235067981, now seen corresponding path program 1 times [2020-10-27 20:32:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:57,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363142097] [2020-10-27 20:32:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:57,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 20:32:57,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:32:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 20:32:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:32:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:32:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:32:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:57,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:57,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:32:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:32:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 20:32:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:57,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:32:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 20:32:57,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363142097] [2020-10-27 20:32:57,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:32:57,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 20:32:57,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591467358] [2020-10-27 20:32:57,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:32:57,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:32:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:32:57,573 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-10-27 20:32:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:57,744 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2020-10-27 20:32:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:32:57,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-27 20:32:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:57,746 INFO L225 Difference]: With dead ends: 99 [2020-10-27 20:32:57,746 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 20:32:57,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:32:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 20:32:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2020-10-27 20:32:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:32:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-27 20:32:57,757 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 30 [2020-10-27 20:32:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:57,758 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-27 20:32:57,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:32:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-27 20:32:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 20:32:57,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:57,759 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:32:57,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:32:57,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1939177873, now seen corresponding path program 2 times [2020-10-27 20:32:57,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:57,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178452895] [2020-10-27 20:32:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:32:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:32:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:58,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:32:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:58,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:32:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:32:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:58,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:58,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:58,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:32:58,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:32:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:32:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:58,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:32:58,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:32:58,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:32:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:32:58,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:32:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:32:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:32:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:32:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:32:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:32:58,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178452895] [2020-10-27 20:32:58,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:32:58,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:32:58,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638976188] [2020-10-27 20:32:58,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:32:58,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:32:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:32:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:32:58,743 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 12 states. [2020-10-27 20:32:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:32:59,446 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2020-10-27 20:32:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 20:32:59,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-27 20:32:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:32:59,448 INFO L225 Difference]: With dead ends: 85 [2020-10-27 20:32:59,448 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 20:32:59,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-10-27 20:32:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 20:32:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2020-10-27 20:32:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 20:32:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-27 20:32:59,463 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 32 [2020-10-27 20:32:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:32:59,463 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-27 20:32:59,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:32:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-27 20:32:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:32:59,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:32:59,466 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:32:59,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:32:59,466 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:32:59,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:32:59,467 INFO L82 PathProgramCache]: Analyzing trace with hash 832012433, now seen corresponding path program 1 times [2020-10-27 20:32:59,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:32:59,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13299187] [2020-10-27 20:32:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:32:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:32:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:32:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:04,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:04,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 20:33:04,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:33:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:33:04,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:33:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:04,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:33:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:33:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:33:04,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13299187] [2020-10-27 20:33:04,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:04,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:33:04,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513415205] [2020-10-27 20:33:04,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:33:04,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:04,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:33:04,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:33:04,646 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 7 states. [2020-10-27 20:33:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:05,016 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-10-27 20:33:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:33:05,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-27 20:33:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:05,020 INFO L225 Difference]: With dead ends: 105 [2020-10-27 20:33:05,021 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 20:33:05,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:33:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 20:33:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2020-10-27 20:33:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 20:33:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-27 20:33:05,045 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 31 [2020-10-27 20:33:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:05,046 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-27 20:33:05,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:33:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-27 20:33:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 20:33:05,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:05,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:05,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:33:05,049 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:05,049 INFO L82 PathProgramCache]: Analyzing trace with hash -302386937, now seen corresponding path program 1 times [2020-10-27 20:33:05,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:05,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014441592] [2020-10-27 20:33:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:06,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1671 [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:33:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:33:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:06,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:33:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:33:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:06,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:06,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:33:06,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:33:06,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:33:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:33:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 20:33:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:33:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:33:07,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014441592] [2020-10-27 20:33:07,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:07,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:33:07,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434936573] [2020-10-27 20:33:07,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:33:07,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:33:07,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:33:07,012 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 14 states. [2020-10-27 20:33:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:07,876 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-10-27 20:33:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 20:33:07,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-27 20:33:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:07,878 INFO L225 Difference]: With dead ends: 97 [2020-10-27 20:33:07,878 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 20:33:07,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-10-27 20:33:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 20:33:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 65. [2020-10-27 20:33:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 20:33:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-10-27 20:33:07,892 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 36 [2020-10-27 20:33:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:07,892 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-10-27 20:33:07,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:33:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-10-27 20:33:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:33:07,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:07,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:07,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:33:07,894 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash -164130775, now seen corresponding path program 2 times [2020-10-27 20:33:07,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:07,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533131603] [2020-10-27 20:33:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:12,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:33:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:33:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:33:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:33:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:33:13,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533131603] [2020-10-27 20:33:13,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:13,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:33:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730925523] [2020-10-27 20:33:13,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:33:13,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:33:13,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:33:13,011 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 7 states. [2020-10-27 20:33:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:13,208 INFO L93 Difference]: Finished difference Result 135 states and 159 transitions. [2020-10-27 20:33:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:33:13,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-27 20:33:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:13,209 INFO L225 Difference]: With dead ends: 135 [2020-10-27 20:33:13,209 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 20:33:13,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:33:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 20:33:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-10-27 20:33:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 20:33:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-27 20:33:13,226 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 35 [2020-10-27 20:33:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:13,226 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-27 20:33:13,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:33:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-27 20:33:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 20:33:13,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:13,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:13,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:33:13,231 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:13,232 INFO L82 PathProgramCache]: Analyzing trace with hash -848839865, now seen corresponding path program 3 times [2020-10-27 20:33:13,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:13,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845508191] [2020-10-27 20:33:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:13,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:13,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:33:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 20:33:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:33:18,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:33:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:33:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:33:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:18,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:18,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:18,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:33:18,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:33:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:18,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:33:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:33:18,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:33:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:33:18,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845508191] [2020-10-27 20:33:18,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:18,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:33:18,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462260786] [2020-10-27 20:33:18,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:33:18,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:33:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:33:18,372 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 8 states. [2020-10-27 20:33:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:18,599 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2020-10-27 20:33:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:33:18,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-27 20:33:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:18,601 INFO L225 Difference]: With dead ends: 137 [2020-10-27 20:33:18,601 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 20:33:18,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:33:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 20:33:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2020-10-27 20:33:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 20:33:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-27 20:33:18,615 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 37 [2020-10-27 20:33:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:18,616 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-27 20:33:18,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:33:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-27 20:33:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 20:33:18,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:18,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:18,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:33:18,623 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:18,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1724279067, now seen corresponding path program 4 times [2020-10-27 20:33:18,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:18,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396205968] [2020-10-27 20:33:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:21,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:23,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:33:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:33:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 20:33:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:23,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:23,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:33:23,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:33:23,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396205968] [2020-10-27 20:33:23,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:23,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:33:23,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564769095] [2020-10-27 20:33:23,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:33:23,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:33:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:33:23,778 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 9 states. [2020-10-27 20:33:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:24,192 INFO L93 Difference]: Finished difference Result 154 states and 182 transitions. [2020-10-27 20:33:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:33:24,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-27 20:33:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:24,194 INFO L225 Difference]: With dead ends: 154 [2020-10-27 20:33:24,195 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 20:33:24,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:33:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 20:33:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2020-10-27 20:33:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 20:33:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-10-27 20:33:24,208 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 39 [2020-10-27 20:33:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:24,208 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-10-27 20:33:24,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:33:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-10-27 20:33:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 20:33:24,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:24,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:24,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:33:24,210 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1207762173, now seen corresponding path program 5 times [2020-10-27 20:33:24,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:24,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691036900] [2020-10-27 20:33:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:25,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 20:33:29,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 20:33:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:33:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 20:33:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:33:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 20:33:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:29,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:29,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:33:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:33:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:30,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:30,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:33:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 20:33:30,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691036900] [2020-10-27 20:33:30,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:30,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 20:33:30,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982715962] [2020-10-27 20:33:30,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 20:33:30,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 20:33:30,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2020-10-27 20:33:30,793 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 23 states. [2020-10-27 20:33:31,441 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-27 20:33:31,777 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-27 20:33:32,526 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 20:33:32,673 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-27 20:33:33,105 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-27 20:33:33,330 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 20:33:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:33,782 INFO L93 Difference]: Finished difference Result 165 states and 202 transitions. [2020-10-27 20:33:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 20:33:33,783 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-10-27 20:33:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:33,786 INFO L225 Difference]: With dead ends: 165 [2020-10-27 20:33:33,786 INFO L226 Difference]: Without dead ends: 161 [2020-10-27 20:33:33,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=405, Invalid=1665, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 20:33:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-27 20:33:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 91. [2020-10-27 20:33:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 20:33:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-10-27 20:33:33,830 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 41 [2020-10-27 20:33:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:33,830 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-10-27 20:33:33,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 20:33:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2020-10-27 20:33:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 20:33:33,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:33,832 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:33,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:33:33,832 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2046494519, now seen corresponding path program 3 times [2020-10-27 20:33:33,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:33,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79594940] [2020-10-27 20:33:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:35,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:33:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:33:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1963 [2020-10-27 20:33:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 20:33:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:33:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 20:33:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:36,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:33:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:33:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:33:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:33:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:33:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:33:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:33:36,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79594940] [2020-10-27 20:33:36,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:36,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:33:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603457363] [2020-10-27 20:33:36,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:33:36,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:36,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:33:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:33:36,095 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand 13 states. [2020-10-27 20:33:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:37,198 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2020-10-27 20:33:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 20:33:37,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-27 20:33:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:37,202 INFO L225 Difference]: With dead ends: 127 [2020-10-27 20:33:37,202 INFO L226 Difference]: Without dead ends: 123 [2020-10-27 20:33:37,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-27 20:33:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-27 20:33:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-10-27 20:33:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 20:33:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2020-10-27 20:33:37,225 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 46 [2020-10-27 20:33:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:37,226 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2020-10-27 20:33:37,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:33:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2020-10-27 20:33:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 20:33:37,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:37,227 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-27 20:33:37,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:33:37,227 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash 204200335, now seen corresponding path program 1 times [2020-10-27 20:33:37,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:37,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624966237] [2020-10-27 20:33:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:42,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:33:42,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:33:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:42,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:33:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:33:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 20:33:42,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624966237] [2020-10-27 20:33:42,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:42,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:33:42,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334141742] [2020-10-27 20:33:42,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:33:42,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:33:42,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:33:42,447 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 9 states. [2020-10-27 20:33:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:43,104 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2020-10-27 20:33:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:33:43,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 20:33:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:43,107 INFO L225 Difference]: With dead ends: 179 [2020-10-27 20:33:43,107 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 20:33:43,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:33:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 20:33:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-10-27 20:33:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 20:33:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2020-10-27 20:33:43,136 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 44 [2020-10-27 20:33:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:43,136 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2020-10-27 20:33:43,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:33:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2020-10-27 20:33:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 20:33:43,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:43,137 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 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 20:33:43,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:33:43,138 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:43,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1629645931, now seen corresponding path program 6 times [2020-10-27 20:33:43,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:43,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159432825] [2020-10-27 20:33:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 20:33:48,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 20:33:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:33:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:33:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 20:33:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:48,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:48,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:33:48,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:33:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:33:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:33:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:33:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 20:33:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:33:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:33:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:33:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 20:33:48,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159432825] [2020-10-27 20:33:48,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:48,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:33:48,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811788552] [2020-10-27 20:33:48,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:33:48,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:48,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:33:48,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:33:48,725 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand 9 states. [2020-10-27 20:33:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:49,316 INFO L93 Difference]: Finished difference Result 201 states and 243 transitions. [2020-10-27 20:33:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:33:49,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-27 20:33:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:49,318 INFO L225 Difference]: With dead ends: 201 [2020-10-27 20:33:49,318 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 20:33:49,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:33:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 20:33:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2020-10-27 20:33:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 20:33:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-27 20:33:49,349 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 45 [2020-10-27 20:33:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:49,349 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-27 20:33:49,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:33:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-27 20:33:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:33:49,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:49,350 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:49,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:33:49,350 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1768476575, now seen corresponding path program 2 times [2020-10-27 20:33:49,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:49,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804098115] [2020-10-27 20:33:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:49,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 20:33:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:33:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:33:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:33:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 20:33:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:33:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:33:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:33:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:33:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 20:33:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 20:33:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:54,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:33:54,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:33:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:33:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 20:33:54,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804098115] [2020-10-27 20:33:54,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:33:54,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:33:54,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660671822] [2020-10-27 20:33:54,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:33:54,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:33:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:33:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:33:54,784 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 14 states. [2020-10-27 20:33:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:33:55,968 INFO L93 Difference]: Finished difference Result 148 states and 172 transitions. [2020-10-27 20:33:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 20:33:55,969 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-27 20:33:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:33:55,971 INFO L225 Difference]: With dead ends: 148 [2020-10-27 20:33:55,971 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 20:33:55,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2020-10-27 20:33:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 20:33:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2020-10-27 20:33:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 20:33:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-10-27 20:33:56,000 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 50 [2020-10-27 20:33:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:33:56,001 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-10-27 20:33:56,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:33:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-10-27 20:33:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 20:33:56,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:33:56,002 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:33:56,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:33:56,003 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:33:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:33:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1421598533, now seen corresponding path program 2 times [2020-10-27 20:33:56,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:33:56,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745296381] [2020-10-27 20:33:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:33:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:33:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:33:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:34:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:34:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:34:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:34:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:34:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:34:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:34:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:34:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 20:34:01,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745296381] [2020-10-27 20:34:01,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:34:01,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 20:34:01,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182720914] [2020-10-27 20:34:01,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:34:01,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:34:01,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:34:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:34:01,955 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 15 states. [2020-10-27 20:34:02,611 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 20:34:03,228 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 20:34:03,804 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-27 20:34:04,103 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-10-27 20:34:04,607 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-27 20:34:04,783 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-27 20:34:04,914 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-27 20:34:05,289 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-27 20:34:05,782 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-27 20:34:06,243 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-27 20:34:06,493 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-27 20:34:06,737 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-27 20:34:06,901 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-27 20:34:07,274 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-27 20:34:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:34:07,609 INFO L93 Difference]: Finished difference Result 302 states and 359 transitions. [2020-10-27 20:34:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 20:34:07,610 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-27 20:34:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:34:07,612 INFO L225 Difference]: With dead ends: 302 [2020-10-27 20:34:07,612 INFO L226 Difference]: Without dead ends: 228 [2020-10-27 20:34:07,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=695, Invalid=2727, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 20:34:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-27 20:34:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 142. [2020-10-27 20:34:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 20:34:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-10-27 20:34:07,641 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 48 [2020-10-27 20:34:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:34:07,642 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-10-27 20:34:07,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:34:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-10-27 20:34:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 20:34:07,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:34:07,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:34:07,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 20:34:07,643 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:34:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:34:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash -119708681, now seen corresponding path program 1 times [2020-10-27 20:34:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:34:07,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829545817] [2020-10-27 20:34:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:34:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:08,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 20:34:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:34:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 20:34:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:34:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:13,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:34:13,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:34:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:34:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:34:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:13,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:34:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:34:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:34:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:34:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:13,775 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-27 20:34:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 20:34:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:34:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:34:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:34:13,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829545817] [2020-10-27 20:34:13,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:34:13,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 20:34:13,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376777335] [2020-10-27 20:34:13,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 20:34:13,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:34:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 20:34:13,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:34:13,813 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand 22 states. [2020-10-27 20:34:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:34:16,648 INFO L93 Difference]: Finished difference Result 223 states and 262 transitions. [2020-10-27 20:34:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 20:34:16,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-10-27 20:34:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:34:16,651 INFO L225 Difference]: With dead ends: 223 [2020-10-27 20:34:16,651 INFO L226 Difference]: Without dead ends: 219 [2020-10-27 20:34:16,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=317, Invalid=1845, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 20:34:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-27 20:34:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 151. [2020-10-27 20:34:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 20:34:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-10-27 20:34:16,681 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 49 [2020-10-27 20:34:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:34:16,681 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-10-27 20:34:16,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 20:34:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-10-27 20:34:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 20:34:16,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:34:16,682 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:34:16,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 20:34:16,682 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:34:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:34:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 132492279, now seen corresponding path program 3 times [2020-10-27 20:34:16,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:34:16,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694336066] [2020-10-27 20:34:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:34:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:17,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:34:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:34:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:34:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:34:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:34:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:34:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:34:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:34:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:34:21,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694336066] [2020-10-27 20:34:21,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:34:21,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:34:21,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164025995] [2020-10-27 20:34:21,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:34:21,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:34:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:34:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:34:21,975 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 9 states. [2020-10-27 20:34:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:34:22,908 INFO L93 Difference]: Finished difference Result 288 states and 349 transitions. [2020-10-27 20:34:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 20:34:22,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-27 20:34:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:34:22,912 INFO L225 Difference]: With dead ends: 288 [2020-10-27 20:34:22,912 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 20:34:22,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:34:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 20:34:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 130. [2020-10-27 20:34:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 20:34:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2020-10-27 20:34:22,945 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 48 [2020-10-27 20:34:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:34:22,945 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2020-10-27 20:34:22,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:34:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2020-10-27 20:34:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:34:22,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:34:22,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:34:22,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 20:34:22,947 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:34:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:34:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1627927485, now seen corresponding path program 4 times [2020-10-27 20:34:22,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:34:22,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440524051] [2020-10-27 20:34:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:34:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 20:34:23,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:34:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:34:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:34:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:34:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:34:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:34:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:34:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:34:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:34:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:34:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:34:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:23,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:34:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 20:34:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:34:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 20:34:23,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440524051] [2020-10-27 20:34:23,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:34:23,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:34:23,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933982574] [2020-10-27 20:34:23,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:34:23,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:34:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:34:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:34:23,957 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 14 states. [2020-10-27 20:34:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:34:25,322 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2020-10-27 20:34:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 20:34:25,322 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-27 20:34:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:34:25,325 INFO L225 Difference]: With dead ends: 185 [2020-10-27 20:34:25,325 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 20:34:25,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 20:34:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 20:34:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2020-10-27 20:34:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 20:34:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 172 transitions. [2020-10-27 20:34:25,366 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 172 transitions. Word has length 54 [2020-10-27 20:34:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:34:25,366 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 172 transitions. [2020-10-27 20:34:25,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:34:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 172 transitions. [2020-10-27 20:34:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:34:25,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:34:25,367 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:34:25,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 20:34:25,368 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:34:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:34:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1937394283, now seen corresponding path program 4 times [2020-10-27 20:34:25,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:34:25,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908508197] [2020-10-27 20:34:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:34:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 20:34:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:34:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 20:34:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:34:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:34:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:34:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:34:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:34:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:34:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:34:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:34:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:34:31,733 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2020-10-27 20:34:31,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 20:34:31,743 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-27 20:34:31,756 INFO L168 Benchmark]: Toolchain (without parser) took 100649.24 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 126.2 MB in the beginning and 316.9 MB in the end (delta: -190.6 MB). Peak memory consumption was 470.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:34:31,757 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:34:31,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:34:31,758 INFO L168 Benchmark]: Boogie Preprocessor took 46.61 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:34:31,759 INFO L168 Benchmark]: RCFGBuilder took 660.58 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:34:31,767 INFO L168 Benchmark]: TraceAbstraction took 99640.78 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 129.8 MB in the beginning and 316.9 MB in the end (delta: -187.1 MB). Peak memory consumption was 473.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:34:31,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.61 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.58 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 99640.78 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 129.8 MB in the beginning and 316.9 MB in the end (delta: -187.1 MB). Peak memory consumption was 473.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...