/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:40:34,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:40:34,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:40:35,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:40:35,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:40:35,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:40:35,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:40:35,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:40:35,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:40:35,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:40:35,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:40:35,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:40:35,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:40:35,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:40:35,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:40:35,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:40:35,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:40:35,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:40:35,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:40:35,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:40:35,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:40:35,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:40:35,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:40:35,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:40:35,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:40:35,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:40:35,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:40:35,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:40:35,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:40:35,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:40:35,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:40:35,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:40:35,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:40:35,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:40:35,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:40:35,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:40:35,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:40:35,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:40:35,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:40:35,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:40:35,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:40:35,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:40:35,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:40:35,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:40:35,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:40:35,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:40:35,208 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:40:35,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:40:35,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:40:35,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:40:35,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:40:35,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:40:35,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:40:35,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:40:35,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:40:35,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:40:35,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:40:35,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:40:35,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:40:35,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:40:35,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:40:35,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:40:35,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:40:35,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:40:35,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:40:35,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:40:35,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:40:35,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:40:35,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:40:35,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:40:35,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:40:35,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:40:35,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:40:35,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:40:35,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:40:35,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:40:35,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:40:35,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-27 15:40:35,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67e898e0f/539995e6217442199721b0f3a348795b/FLAG5e4b1a81e [2020-10-27 15:40:36,763 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:40:36,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-27 15:40:36,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67e898e0f/539995e6217442199721b0f3a348795b/FLAG5e4b1a81e [2020-10-27 15:40:36,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67e898e0f/539995e6217442199721b0f3a348795b [2020-10-27 15:40:36,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:40:36,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:40:36,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:40:36,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:40:36,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:40:36,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:40:36" (1/1) ... [2020-10-27 15:40:36,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535a338a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:36, skipping insertion in model container [2020-10-27 15:40:36,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:40:36" (1/1) ... [2020-10-27 15:40:36,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:40:36,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:40:37,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:40:37,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:40:38,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:40:38,111 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:40:38,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38 WrapperNode [2020-10-27 15:40:38,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:40:38,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:40:38,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:40:38,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:40:38,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... [2020-10-27 15:40:38,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:40:38,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:40:38,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:40:38,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:40:38,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:40:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:40:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:40:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:40:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:40:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:40:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:40:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:40:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:40:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:40:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:40:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:40:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:40:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:40:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:40:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:40:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:40:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:40:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:40:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:40:40,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:40:40,392 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:40:40,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:40:40 BoogieIcfgContainer [2020-10-27 15:40:40,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:40:40,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:40:40,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:40:40,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:40:40,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:40:36" (1/3) ... [2020-10-27 15:40:40,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624eb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:40:40, skipping insertion in model container [2020-10-27 15:40:40,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:38" (2/3) ... [2020-10-27 15:40:40,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624eb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:40:40, skipping insertion in model container [2020-10-27 15:40:40,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:40:40" (3/3) ... [2020-10-27 15:40:40,404 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-27 15:40:40,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:40:40,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:40:40,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:40:40,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:40:40,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:40:40,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:40:40,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:40:40,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:40:40,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:40:40,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:40:40,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:40:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:40:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 15:40:40,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:40,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:40,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2130077864, now seen corresponding path program 1 times [2020-10-27 15:40:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:40,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281148499] [2020-10-27 15:40:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:44,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:44,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 15:40:44,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:40:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3872 [2020-10-27 15:40:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:40:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:40:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:40:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:40:46,132 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 15:40:46,269 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-27 15:40:46,537 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-27 15:40:46,794 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:46,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:46,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:46,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:40:46,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:40:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:40:47,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281148499] [2020-10-27 15:40:47,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:40:47,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 15:40:47,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952050508] [2020-10-27 15:40:47,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:40:47,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:40:47,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:40:47,364 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-27 15:40:47,883 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 15:40:48,920 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-27 15:40:50,006 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-27 15:40:51,126 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-10-27 15:40:52,844 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-27 15:40:54,346 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 225 DAG size of output: 202 [2020-10-27 15:40:56,074 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 228 DAG size of output: 201 [2020-10-27 15:41:00,014 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 229 DAG size of output: 200 [2020-10-27 15:41:01,432 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 231 DAG size of output: 198 [2020-10-27 15:41:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:04,466 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-27 15:41:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:41:04,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 162 [2020-10-27 15:41:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:04,485 INFO L225 Difference]: With dead ends: 742 [2020-10-27 15:41:04,485 INFO L226 Difference]: Without dead ends: 365 [2020-10-27 15:41:04,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:41:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-27 15:41:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-27 15:41:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-27 15:41:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-27 15:41:04,584 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 162 [2020-10-27 15:41:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:04,585 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-27 15:41:04,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:41:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-27 15:41:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 15:41:04,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:04,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:04,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:41:04,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:04,593 INFO L82 PathProgramCache]: Analyzing trace with hash -560186619, now seen corresponding path program 1 times [2020-10-27 15:41:04,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:04,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798427824] [2020-10-27 15:41:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:08,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 15:41:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4054 [2020-10-27 15:41:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:41:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 15:41:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:41:09,267 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:41:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:41:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:09,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:41:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:41:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798427824] [2020-10-27 15:41:09,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:41:09,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817393709] [2020-10-27 15:41:09,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:41:09,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:41:09,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:41:09,525 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 5 states. [2020-10-27 15:41:09,765 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:12,535 INFO L93 Difference]: Finished difference Result 826 states and 1286 transitions. [2020-10-27 15:41:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:41:12,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-27 15:41:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:12,551 INFO L225 Difference]: With dead ends: 826 [2020-10-27 15:41:12,552 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 15:41:12,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:12,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 15:41:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2020-10-27 15:41:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-27 15:41:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 867 transitions. [2020-10-27 15:41:12,621 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 867 transitions. Word has length 173 [2020-10-27 15:41:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:12,622 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 867 transitions. [2020-10-27 15:41:12,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:41:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 867 transitions. [2020-10-27 15:41:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 15:41:12,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:12,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:12,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:41:12,630 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 235580476, now seen corresponding path program 1 times [2020-10-27 15:41:12,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:12,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991253989] [2020-10-27 15:41:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 15:41:16,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3570 [2020-10-27 15:41:16,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:41:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 15:41:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,653 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:16,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:16,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:41:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:41:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:41:16,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991253989] [2020-10-27 15:41:16,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:16,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:41:16,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51788657] [2020-10-27 15:41:16,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:41:16,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:16,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:41:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:41:16,885 INFO L87 Difference]: Start difference. First operand 580 states and 867 transitions. Second operand 5 states. [2020-10-27 15:41:17,338 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:20,568 INFO L93 Difference]: Finished difference Result 1468 states and 2318 transitions. [2020-10-27 15:41:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:41:20,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-27 15:41:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:20,577 INFO L225 Difference]: With dead ends: 1468 [2020-10-27 15:41:20,577 INFO L226 Difference]: Without dead ends: 1009 [2020-10-27 15:41:20,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-27 15:41:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1004. [2020-10-27 15:41:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-27 15:41:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1483 transitions. [2020-10-27 15:41:20,625 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1483 transitions. Word has length 182 [2020-10-27 15:41:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:20,625 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1483 transitions. [2020-10-27 15:41:20,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:41:20,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1483 transitions. [2020-10-27 15:41:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 15:41:20,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:20,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:20,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:41:20,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 532636872, now seen corresponding path program 1 times [2020-10-27 15:41:20,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:20,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270815284] [2020-10-27 15:41:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 15:41:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2116 [2020-10-27 15:41:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:41:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 15:41:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:23,212 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:23,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:23,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:23,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:41:23,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:23,383 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:41:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:23,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:23,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:41:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:41:23,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270815284] [2020-10-27 15:41:23,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:23,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:41:23,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768233925] [2020-10-27 15:41:23,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:41:23,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:41:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:41:23,534 INFO L87 Difference]: Start difference. First operand 1004 states and 1483 transitions. Second operand 5 states. [2020-10-27 15:41:23,863 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:26,973 INFO L93 Difference]: Finished difference Result 2735 states and 4188 transitions. [2020-10-27 15:41:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:41:26,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-27 15:41:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:26,991 INFO L225 Difference]: With dead ends: 2735 [2020-10-27 15:41:26,991 INFO L226 Difference]: Without dead ends: 1852 [2020-10-27 15:41:26,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-10-27 15:41:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1850. [2020-10-27 15:41:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-10-27 15:41:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2673 transitions. [2020-10-27 15:41:27,061 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2673 transitions. Word has length 194 [2020-10-27 15:41:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:27,062 INFO L481 AbstractCegarLoop]: Abstraction has 1850 states and 2673 transitions. [2020-10-27 15:41:27,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:41:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2673 transitions. [2020-10-27 15:41:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 15:41:27,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:27,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:27,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:41:27,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1261286652, now seen corresponding path program 1 times [2020-10-27 15:41:27,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:27,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471224815] [2020-10-27 15:41:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:32,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 15:41:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:41:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 15:41:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 15:41:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 15:41:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:32,491 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:41:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:32,649 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:41:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:41:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 15:41:32,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 15:41:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 15:41:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:41:32,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471224815] [2020-10-27 15:41:32,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:32,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:41:32,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290316321] [2020-10-27 15:41:32,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:41:32,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:41:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:41:32,941 INFO L87 Difference]: Start difference. First operand 1850 states and 2673 transitions. Second operand 5 states. [2020-10-27 15:41:33,193 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:36,820 INFO L93 Difference]: Finished difference Result 5270 states and 7890 transitions. [2020-10-27 15:41:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:41:36,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-27 15:41:36,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:36,859 INFO L225 Difference]: With dead ends: 5270 [2020-10-27 15:41:36,859 INFO L226 Difference]: Without dead ends: 3541 [2020-10-27 15:41:36,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-10-27 15:41:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3524. [2020-10-27 15:41:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3524 states. [2020-10-27 15:41:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 5189 transitions. [2020-10-27 15:41:37,018 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 5189 transitions. Word has length 210 [2020-10-27 15:41:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:37,018 INFO L481 AbstractCegarLoop]: Abstraction has 3524 states and 5189 transitions. [2020-10-27 15:41:37,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:41:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 5189 transitions. [2020-10-27 15:41:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 15:41:37,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:37,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:37,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:41:37,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:37,037 INFO L82 PathProgramCache]: Analyzing trace with hash 761716287, now seen corresponding path program 1 times [2020-10-27 15:41:37,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:37,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736539897] [2020-10-27 15:41:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 15:41:41,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:41:41,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-10-27 15:41:41,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:41:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:41:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,308 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:41,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:41:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:41:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:41,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:41:41,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:41:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:41:41,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:41:41,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736539897] [2020-10-27 15:41:41,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:41,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259720942] [2020-10-27 15:41:41,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:41,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:41,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:41,975 INFO L87 Difference]: Start difference. First operand 3524 states and 5189 transitions. Second operand 7 states. [2020-10-27 15:41:42,294 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:41:42,758 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:41:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:46,179 INFO L93 Difference]: Finished difference Result 8723 states and 13412 transitions. [2020-10-27 15:41:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:41:46,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-27 15:41:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:46,215 INFO L225 Difference]: With dead ends: 8723 [2020-10-27 15:41:46,216 INFO L226 Difference]: Without dead ends: 5320 [2020-10-27 15:41:46,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2020-10-27 15:41:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 5282. [2020-10-27 15:41:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5282 states. [2020-10-27 15:41:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7443 transitions. [2020-10-27 15:41:46,472 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7443 transitions. Word has length 250 [2020-10-27 15:41:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:46,473 INFO L481 AbstractCegarLoop]: Abstraction has 5282 states and 7443 transitions. [2020-10-27 15:41:46,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7443 transitions. [2020-10-27 15:41:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 15:41:46,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:46,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:46,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:41:46,494 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash -647175917, now seen corresponding path program 1 times [2020-10-27 15:41:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:46,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494091325] [2020-10-27 15:41:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:48,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:48,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 15:41:48,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:41:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2382 [2020-10-27 15:41:48,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:41:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:41:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:41:49,255 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:41:49,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:41:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:49,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:49,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:41:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:41:49,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494091325] [2020-10-27 15:41:49,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:49,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:49,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443651825] [2020-10-27 15:41:49,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:49,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:49,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:49,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:49,766 INFO L87 Difference]: Start difference. First operand 5282 states and 7443 transitions. Second operand 7 states. [2020-10-27 15:41:50,324 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:41:51,335 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:41:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:56,686 INFO L93 Difference]: Finished difference Result 16699 states and 26537 transitions. [2020-10-27 15:41:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:41:56,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-27 15:41:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:56,785 INFO L225 Difference]: With dead ends: 16699 [2020-10-27 15:41:56,785 INFO L226 Difference]: Without dead ends: 11538 [2020-10-27 15:41:56,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11538 states. [2020-10-27 15:41:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11538 to 11317. [2020-10-27 15:41:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11317 states. [2020-10-27 15:41:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11317 states to 11317 states and 16075 transitions. [2020-10-27 15:41:57,278 INFO L78 Accepts]: Start accepts. Automaton has 11317 states and 16075 transitions. Word has length 260 [2020-10-27 15:41:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:57,278 INFO L481 AbstractCegarLoop]: Abstraction has 11317 states and 16075 transitions. [2020-10-27 15:41:57,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11317 states and 16075 transitions. [2020-10-27 15:41:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-27 15:41:57,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:57,330 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:57,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:41:57,331 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:57,332 INFO L82 PathProgramCache]: Analyzing trace with hash -110367257, now seen corresponding path program 1 times [2020-10-27 15:41:57,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:57,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18700247] [2020-10-27 15:41:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:02,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:42:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:02,749 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:42:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:02,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:02,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:42:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:42:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:03,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:42:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 15:42:03,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18700247] [2020-10-27 15:42:03,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:03,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:42:03,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650459561] [2020-10-27 15:42:03,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:42:03,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:03,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:42:03,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:42:03,253 INFO L87 Difference]: Start difference. First operand 11317 states and 16075 transitions. Second operand 6 states. [2020-10-27 15:42:03,511 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:42:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:05,681 INFO L93 Difference]: Finished difference Result 18692 states and 26702 transitions. [2020-10-27 15:42:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:42:05,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-27 15:42:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:05,731 INFO L225 Difference]: With dead ends: 18692 [2020-10-27 15:42:05,731 INFO L226 Difference]: Without dead ends: 11315 [2020-10-27 15:42:05,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11315 states. [2020-10-27 15:42:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11315 to 11315. [2020-10-27 15:42:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2020-10-27 15:42:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 16071 transitions. [2020-10-27 15:42:06,107 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 16071 transitions. Word has length 270 [2020-10-27 15:42:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:06,107 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states and 16071 transitions. [2020-10-27 15:42:06,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:42:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 16071 transitions. [2020-10-27 15:42:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-27 15:42:06,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:06,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:06,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:42:06,152 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:06,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:06,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1645763927, now seen corresponding path program 1 times [2020-10-27 15:42:06,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:06,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622482732] [2020-10-27 15:42:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:42:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:11,527 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:11,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:11,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:11,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:42:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:11,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:11,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:11,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:42:11,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:42:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:42:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:42:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 15:42:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:42:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:42:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622482732] [2020-10-27 15:42:12,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:12,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:12,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019175237] [2020-10-27 15:42:12,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:12,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:12,604 INFO L87 Difference]: Start difference. First operand 11315 states and 16071 transitions. Second operand 7 states. [2020-10-27 15:42:12,887 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:15,328 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 15:42:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:17,276 INFO L93 Difference]: Finished difference Result 25195 states and 36528 transitions. [2020-10-27 15:42:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:42:17,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-27 15:42:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:17,348 INFO L225 Difference]: With dead ends: 25195 [2020-10-27 15:42:17,349 INFO L226 Difference]: Without dead ends: 16106 [2020-10-27 15:42:17,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:42:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16106 states. [2020-10-27 15:42:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16106 to 16059. [2020-10-27 15:42:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16059 states. [2020-10-27 15:42:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16059 states to 16059 states and 22944 transitions. [2020-10-27 15:42:17,865 INFO L78 Accepts]: Start accepts. Automaton has 16059 states and 22944 transitions. Word has length 270 [2020-10-27 15:42:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:17,866 INFO L481 AbstractCegarLoop]: Abstraction has 16059 states and 22944 transitions. [2020-10-27 15:42:17,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 16059 states and 22944 transitions. [2020-10-27 15:42:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 15:42:17,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:17,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:17,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:42:17,937 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash -542705306, now seen corresponding path program 1 times [2020-10-27 15:42:17,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:17,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97676827] [2020-10-27 15:42:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 15:42:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:42:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 15:42:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 15:42:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:42:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,313 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:42:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:42:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:42:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:42:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:42:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 15:42:23,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:42:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 15:42:23,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97676827] [2020-10-27 15:42:23,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:23,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:23,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026557404] [2020-10-27 15:42:23,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:23,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:23,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:23,912 INFO L87 Difference]: Start difference. First operand 16059 states and 22944 transitions. Second operand 7 states. [2020-10-27 15:42:24,182 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:42:24,656 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:42:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:28,608 INFO L93 Difference]: Finished difference Result 42569 states and 63838 transitions. [2020-10-27 15:42:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:42:28,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-27 15:42:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:28,729 INFO L225 Difference]: With dead ends: 42569 [2020-10-27 15:42:28,730 INFO L226 Difference]: Without dead ends: 26659 [2020-10-27 15:42:28,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:42:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26659 states. [2020-10-27 15:42:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26659 to 26434. [2020-10-27 15:42:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26434 states. [2020-10-27 15:42:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 37181 transitions. [2020-10-27 15:42:29,690 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 37181 transitions. Word has length 280 [2020-10-27 15:42:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:29,690 INFO L481 AbstractCegarLoop]: Abstraction has 26434 states and 37181 transitions. [2020-10-27 15:42:29,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 37181 transitions. [2020-10-27 15:42:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-27 15:42:29,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:29,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:29,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:42:29,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1111011570, now seen corresponding path program 1 times [2020-10-27 15:42:29,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:29,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549618342] [2020-10-27 15:42:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:42:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 15:42:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:30,884 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:30,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:30,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:30,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:31,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:42:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:42:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:31,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:31,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:42:31,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:31,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 15:42:31,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:31,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:31,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:31,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:42:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:42:31,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549618342] [2020-10-27 15:42:31,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:31,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:31,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796104864] [2020-10-27 15:42:31,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:31,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:31,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:31,538 INFO L87 Difference]: Start difference. First operand 26434 states and 37181 transitions. Second operand 7 states. [2020-10-27 15:42:32,138 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:42:33,417 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:35,884 INFO L93 Difference]: Finished difference Result 49209 states and 73663 transitions. [2020-10-27 15:42:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:42:35,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-27 15:42:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:36,005 INFO L225 Difference]: With dead ends: 49209 [2020-10-27 15:42:36,005 INFO L226 Difference]: Without dead ends: 22900 [2020-10-27 15:42:36,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:42:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22900 states. [2020-10-27 15:42:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22900 to 21993. [2020-10-27 15:42:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21993 states. [2020-10-27 15:42:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21993 states to 21993 states and 28064 transitions. [2020-10-27 15:42:36,706 INFO L78 Accepts]: Start accepts. Automaton has 21993 states and 28064 transitions. Word has length 284 [2020-10-27 15:42:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:36,707 INFO L481 AbstractCegarLoop]: Abstraction has 21993 states and 28064 transitions. [2020-10-27 15:42:36,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 21993 states and 28064 transitions. [2020-10-27 15:42:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 15:42:36,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:36,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:36,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:42:36,749 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:36,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1817988042, now seen corresponding path program 1 times [2020-10-27 15:42:36,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:36,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063806622] [2020-10-27 15:42:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 15:42:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,145 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:42,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:42:42,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:42:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:42:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:42,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:42:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:42:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:42:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 157 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:42:42,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063806622] [2020-10-27 15:42:42,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:42,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:42:42,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265919390] [2020-10-27 15:42:42,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:42:42,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:42,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:42:42,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:42:42,906 INFO L87 Difference]: Start difference. First operand 21993 states and 28064 transitions. Second operand 9 states. [2020-10-27 15:42:43,205 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:42:43,843 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-27 15:42:46,330 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 15:42:46,765 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:42:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:50,286 INFO L93 Difference]: Finished difference Result 54462 states and 74266 transitions. [2020-10-27 15:42:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:42:50,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2020-10-27 15:42:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:50,443 INFO L225 Difference]: With dead ends: 54462 [2020-10-27 15:42:50,443 INFO L226 Difference]: Without dead ends: 37087 [2020-10-27 15:42:50,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:42:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37087 states. [2020-10-27 15:42:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37087 to 36409. [2020-10-27 15:42:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36409 states. [2020-10-27 15:42:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36409 states to 36409 states and 46884 transitions. [2020-10-27 15:42:51,700 INFO L78 Accepts]: Start accepts. Automaton has 36409 states and 46884 transitions. Word has length 314 [2020-10-27 15:42:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:51,701 INFO L481 AbstractCegarLoop]: Abstraction has 36409 states and 46884 transitions. [2020-10-27 15:42:51,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:42:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 36409 states and 46884 transitions. [2020-10-27 15:42:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-27 15:42:51,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:51,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:51,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:42:51,783 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1625796806, now seen corresponding path program 1 times [2020-10-27 15:42:51,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:51,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203953955] [2020-10-27 15:42:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:56,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:56,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 15:42:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 15:42:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:57,137 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:57,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:42:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:57,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:42:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:57,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:42:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 15:42:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:42:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 15:42:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:57,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:42:57,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 15:42:57,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:42:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 15:42:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 251 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 15:42:58,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203953955] [2020-10-27 15:42:58,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:58,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:42:58,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273695253] [2020-10-27 15:42:58,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:42:58,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:42:58,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:42:58,088 INFO L87 Difference]: Start difference. First operand 36409 states and 46884 transitions. Second operand 9 states. [2020-10-27 15:42:58,347 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:42:59,960 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-27 15:43:03,547 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 15:43:04,858 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 15:43:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:06,058 INFO L93 Difference]: Finished difference Result 105138 states and 144053 transitions. [2020-10-27 15:43:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:43:06,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 346 [2020-10-27 15:43:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:06,419 INFO L225 Difference]: With dead ends: 105138 [2020-10-27 15:43:06,420 INFO L226 Difference]: Without dead ends: 71422 [2020-10-27 15:43:06,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:43:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71422 states. [2020-10-27 15:43:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71422 to 70730. [2020-10-27 15:43:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70730 states. [2020-10-27 15:43:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70730 states to 70730 states and 94531 transitions. [2020-10-27 15:43:09,195 INFO L78 Accepts]: Start accepts. Automaton has 70730 states and 94531 transitions. Word has length 346 [2020-10-27 15:43:09,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:09,196 INFO L481 AbstractCegarLoop]: Abstraction has 70730 states and 94531 transitions. [2020-10-27 15:43:09,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:43:09,196 INFO L276 IsEmpty]: Start isEmpty. Operand 70730 states and 94531 transitions. [2020-10-27 15:43:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-27 15:43:09,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:09,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:09,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:43:09,595 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1809767339, now seen corresponding path program 1 times [2020-10-27 15:43:09,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:09,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972214629] [2020-10-27 15:43:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-27 15:43:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 15:43:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:15,142 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:15,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:15,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:15,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:43:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:43:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:43:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 15:43:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:43:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:43:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 15:43:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972214629] [2020-10-27 15:43:16,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:16,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:43:16,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605661432] [2020-10-27 15:43:16,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:43:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:43:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:43:16,104 INFO L87 Difference]: Start difference. First operand 70730 states and 94531 transitions. Second operand 7 states. [2020-10-27 15:43:16,587 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:18,006 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:23,040 INFO L93 Difference]: Finished difference Result 150011 states and 212079 transitions. [2020-10-27 15:43:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:43:23,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-27 15:43:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:23,477 INFO L225 Difference]: With dead ends: 150011 [2020-10-27 15:43:23,477 INFO L226 Difference]: Without dead ends: 79414 [2020-10-27 15:43:23,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:43:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79414 states. [2020-10-27 15:43:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79414 to 74064. [2020-10-27 15:43:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74064 states. [2020-10-27 15:43:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74064 states to 74064 states and 95621 transitions. [2020-10-27 15:43:26,976 INFO L78 Accepts]: Start accepts. Automaton has 74064 states and 95621 transitions. Word has length 353 [2020-10-27 15:43:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:26,977 INFO L481 AbstractCegarLoop]: Abstraction has 74064 states and 95621 transitions. [2020-10-27 15:43:26,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:43:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 74064 states and 95621 transitions. [2020-10-27 15:43:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-27 15:43:27,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:27,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:27,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:43:27,496 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1545449928, now seen corresponding path program 1 times [2020-10-27 15:43:27,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:27,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695861480] [2020-10-27 15:43:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 15:43:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:32,966 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:33,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:43:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:43:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:33,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:43:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:33,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 15:43:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-27 15:43:33,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695861480] [2020-10-27 15:43:33,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:33,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:43:33,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523981703] [2020-10-27 15:43:33,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:43:33,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:33,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:43:33,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:43:33,680 INFO L87 Difference]: Start difference. First operand 74064 states and 95621 transitions. Second operand 8 states. [2020-10-27 15:43:33,960 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:36,506 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:38,190 INFO L93 Difference]: Finished difference Result 124209 states and 160935 transitions. [2020-10-27 15:43:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:43:38,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2020-10-27 15:43:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:38,377 INFO L225 Difference]: With dead ends: 124209 [2020-10-27 15:43:38,377 INFO L226 Difference]: Without dead ends: 63483 [2020-10-27 15:43:38,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:43:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63483 states. [2020-10-27 15:43:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63483 to 62945. [2020-10-27 15:43:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62945 states. [2020-10-27 15:43:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62945 states to 62945 states and 79421 transitions. [2020-10-27 15:43:40,797 INFO L78 Accepts]: Start accepts. Automaton has 62945 states and 79421 transitions. Word has length 362 [2020-10-27 15:43:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:40,798 INFO L481 AbstractCegarLoop]: Abstraction has 62945 states and 79421 transitions. [2020-10-27 15:43:40,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:43:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 62945 states and 79421 transitions. [2020-10-27 15:43:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-27 15:43:41,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:41,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:41,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:43:41,288 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:41,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1000823078, now seen corresponding path program 1 times [2020-10-27 15:43:41,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:41,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728067361] [2020-10-27 15:43:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 15:43:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:42,734 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:42,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:43:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 15:43:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 15:43:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:43:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:43:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:43:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:43:43,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728067361] [2020-10-27 15:43:43,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:43,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:43:43,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440921273] [2020-10-27 15:43:43,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:43:43,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:43:43,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:43:43,444 INFO L87 Difference]: Start difference. First operand 62945 states and 79421 transitions. Second operand 7 states. [2020-10-27 15:43:43,831 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:44,222 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:50,028 INFO L93 Difference]: Finished difference Result 140151 states and 179784 transitions. [2020-10-27 15:43:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:43:50,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-27 15:43:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:50,288 INFO L225 Difference]: With dead ends: 140151 [2020-10-27 15:43:50,288 INFO L226 Difference]: Without dead ends: 77762 [2020-10-27 15:43:50,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:43:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77762 states. [2020-10-27 15:43:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77762 to 76596. [2020-10-27 15:43:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76596 states. [2020-10-27 15:43:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76596 states to 76596 states and 93155 transitions. [2020-10-27 15:43:52,702 INFO L78 Accepts]: Start accepts. Automaton has 76596 states and 93155 transitions. Word has length 363 [2020-10-27 15:43:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:52,703 INFO L481 AbstractCegarLoop]: Abstraction has 76596 states and 93155 transitions. [2020-10-27 15:43:52,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:43:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 76596 states and 93155 transitions. [2020-10-27 15:43:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-27 15:43:52,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:52,852 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:52,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:43:52,853 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:52,853 INFO L82 PathProgramCache]: Analyzing trace with hash 211064239, now seen corresponding path program 1 times [2020-10-27 15:43:52,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:52,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213518104] [2020-10-27 15:43:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 15:43:57,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 15:43:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,248 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:43:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 15:43:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:43:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:43:58,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:43:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 15:43:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:43:58,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:43:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:43:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 15:43:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:43:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:43:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 15:43:59,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213518104] [2020-10-27 15:43:59,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:59,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:43:59,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928682715] [2020-10-27 15:43:59,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:43:59,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:43:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:43:59,222 INFO L87 Difference]: Start difference. First operand 76596 states and 93155 transitions. Second operand 7 states. [2020-10-27 15:43:59,782 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159