/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/Problem05_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:22:18,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:22:18,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:22:18,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:22:18,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:22:18,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:22:18,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:22:18,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:22:18,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:22:18,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:22:18,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:22:18,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:22:18,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:22:18,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:22:18,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:22:18,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:22:18,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:22:18,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:22:18,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:22:18,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:22:18,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:22:18,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:22:18,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:22:18,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:22:18,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:22:18,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:22:18,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:22:18,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:22:18,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:22:18,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:22:18,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:22:18,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:22:18,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:22:18,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:22:18,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:22:18,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:22:18,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:22:18,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:22:18,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:22:18,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:22:18,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:22:18,379 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 16:22:18,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:22:18,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:22:18,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:22:18,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:22:18,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:22:18,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:22:18,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:22:18,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:22:18,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:22:18,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:22:18,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:22:18,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:22:18,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:22:18,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:22:18,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:22:18,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:22:18,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:22:18,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:22:18,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:22:18,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:22:18,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:22:18,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:22:18,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:22:18,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:22:18,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:22:18,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:22:18,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:22:18,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:22:18,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:22:18,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:22:18,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:22:18,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:22:18,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:22:18,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:22:18,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:22:18,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label58.c [2020-10-27 16:22:18,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b18ace5/04ec1a4389b94df4b4331df310348e04/FLAG30a250edf [2020-10-27 16:22:20,236 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:22:20,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label58.c [2020-10-27 16:22:20,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b18ace5/04ec1a4389b94df4b4331df310348e04/FLAG30a250edf [2020-10-27 16:22:20,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b18ace5/04ec1a4389b94df4b4331df310348e04 [2020-10-27 16:22:20,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:22:20,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:22:20,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:22:20,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:22:20,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:22:20,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:22:20" (1/1) ... [2020-10-27 16:22:20,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388af41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:20, skipping insertion in model container [2020-10-27 16:22:20,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:22:20" (1/1) ... [2020-10-27 16:22:20,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:22:20,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:22:23,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:22:23,256 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:22:24,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:22:24,562 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:22:24,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24 WrapperNode [2020-10-27 16:22:24,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:22:24,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:22:24,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:22:24,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:22:24,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:24,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:24,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:24,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:24,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:24,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:25,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (1/1) ... [2020-10-27 16:22:25,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:22:25,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:22:25,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:22:25,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:22:25,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (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 16:22:25,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:22:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:22:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:22:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:22:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:22:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:22:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:22:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:22:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:22:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:22:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:22:35,216 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:22:35,217 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:22:35,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:22:35 BoogieIcfgContainer [2020-10-27 16:22:35,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:22:35,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:22:35,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:22:35,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:22:35,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:22:20" (1/3) ... [2020-10-27 16:22:35,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc436bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:22:35, skipping insertion in model container [2020-10-27 16:22:35,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:22:24" (2/3) ... [2020-10-27 16:22:35,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc436bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:22:35, skipping insertion in model container [2020-10-27 16:22:35,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:22:35" (3/3) ... [2020-10-27 16:22:35,233 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label58.c [2020-10-27 16:22:35,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:22:35,253 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:22:35,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:22:35,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:22:35,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:22:35,311 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:22:35,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:22:35,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:22:35,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:22:35,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:22:35,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:22:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:22:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2020-10-27 16:22:35,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:22:35,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:35,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:22:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:22:35,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1539662105, now seen corresponding path program 1 times [2020-10-27 16:22:35,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:22:35,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302847263] [2020-10-27 16:22:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:22:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:37,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:41,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1681 [2020-10-27 16:22:41,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-27 16:22:41,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:22:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:22:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1672 [2020-10-27 16:22:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:22:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:22:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:44,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:22:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 16:22:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:22:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:22:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:22:47,058 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 16:22:47,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302847263] [2020-10-27 16:22:47,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:22:47,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:22:47,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930457082] [2020-10-27 16:22:47,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:22:47,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:47,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:22:47,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:22:47,096 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:23:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:23:11,652 INFO L93 Difference]: Finished difference Result 6314 states and 11856 transitions. [2020-10-27 16:23:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:23:11,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1657 [2020-10-27 16:23:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:23:11,709 INFO L225 Difference]: With dead ends: 6314 [2020-10-27 16:23:11,709 INFO L226 Difference]: Without dead ends: 4024 [2020-10-27 16:23:11,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:23:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-27 16:23:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4009. [2020-10-27 16:23:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-27 16:23:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6272 transitions. [2020-10-27 16:23:11,939 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6272 transitions. Word has length 1657 [2020-10-27 16:23:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:23:11,943 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6272 transitions. [2020-10-27 16:23:11,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:23:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6272 transitions. [2020-10-27 16:23:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-27 16:23:12,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:23:12,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:12,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:23:12,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:23:12,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:23:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2139541859, now seen corresponding path program 1 times [2020-10-27 16:23:12,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:23:12,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021080379] [2020-10-27 16:23:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:23:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:17,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1692 [2020-10-27 16:23:17,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:23:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-27 16:23:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:23:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:23:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1669 [2020-10-27 16:23:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:23:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:23:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:19,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:23:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:19,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:23:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:23:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:23:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:23:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:23:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:23:21,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021080379] [2020-10-27 16:23:21,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:23:21,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:23:21,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967421269] [2020-10-27 16:23:21,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:23:21,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:23:21,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:23:21,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:23:21,866 INFO L87 Difference]: Start difference. First operand 4009 states and 6272 transitions. Second operand 5 states. [2020-10-27 16:23:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:23:48,123 INFO L93 Difference]: Finished difference Result 11601 states and 18304 transitions. [2020-10-27 16:23:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:23:48,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1666 [2020-10-27 16:23:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:23:48,174 INFO L225 Difference]: With dead ends: 11601 [2020-10-27 16:23:48,174 INFO L226 Difference]: Without dead ends: 7598 [2020-10-27 16:23:48,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:23:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2020-10-27 16:23:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 7589. [2020-10-27 16:23:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7589 states. [2020-10-27 16:23:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 10623 transitions. [2020-10-27 16:23:48,438 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 10623 transitions. Word has length 1666 [2020-10-27 16:23:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:23:48,442 INFO L481 AbstractCegarLoop]: Abstraction has 7589 states and 10623 transitions. [2020-10-27 16:23:48,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:23:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 10623 transitions. [2020-10-27 16:23:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-27 16:23:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:23:48,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:48,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:23:48,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:23:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:23:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash -5085684, now seen corresponding path program 1 times [2020-10-27 16:23:48,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:23:48,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098280466] [2020-10-27 16:23:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:23:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:53,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:53,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-27 16:23:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-27 16:23:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:58,077 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-27 16:23:58,205 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 16:23:58,337 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 16:23:58,469 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 16:23:58,613 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 16:23:58,757 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 16:23:58,905 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 16:23:59,054 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 16:23:59,198 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-27 16:23:59,344 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-27 16:23:59,495 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-27 16:23:59,741 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-27 16:24:00,003 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45 [2020-10-27 16:24:00,270 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 40 [2020-10-27 16:24:00,455 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2020-10-27 16:24:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:24:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:24:00,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:24:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:24:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:24:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:24:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:24:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:24:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:00,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:00,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:24:00,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:24:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:24:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:24:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:24:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:24:00,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:24:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:24:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:24:00,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:24:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:24:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:24:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:24:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 16:24:24,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098280466] [2020-10-27 16:24:24,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:24:24,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:24:24,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336284285] [2020-10-27 16:24:24,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:24:24,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:24:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:24:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:24:24,475 INFO L87 Difference]: Start difference. First operand 7589 states and 10623 transitions. Second operand 23 states. [2020-10-27 16:24:24,970 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:24:25,215 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 16:24:26,285 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 16:24:32,291 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:24:32,553 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:24:39,844 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:24:40,086 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:24:43,855 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 16:24:44,180 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:24:47,698 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 16:24:47,929 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:24:54,834 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:24:55,098 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:24:57,181 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2020-10-27 16:24:59,153 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-27 16:25:03,231 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:25:03,453 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:25:04,778 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:25:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:25:13,052 INFO L93 Difference]: Finished difference Result 16465 states and 23867 transitions. [2020-10-27 16:25:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 16:25:13,053 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1681 [2020-10-27 16:25:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:25:13,099 INFO L225 Difference]: With dead ends: 16465 [2020-10-27 16:25:13,100 INFO L226 Difference]: Without dead ends: 8882 [2020-10-27 16:25:13,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 16:25:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2020-10-27 16:25:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8877. [2020-10-27 16:25:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-27 16:25:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 11945 transitions. [2020-10-27 16:25:13,339 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 11945 transitions. Word has length 1681 [2020-10-27 16:25:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:25:13,340 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 11945 transitions. [2020-10-27 16:25:13,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 16:25:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 11945 transitions. [2020-10-27 16:25:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-27 16:25:13,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:25:13,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:13,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:25:13,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:25:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:25:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1507170893, now seen corresponding path program 1 times [2020-10-27 16:25:13,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:25:13,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468535152] [2020-10-27 16:25:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:25:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:13,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:18,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-27 16:25:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:25:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:25:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:25:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:25:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:25:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:25:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:19,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:25:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:25:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:25:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 16:25:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:25:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:25:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 16:25:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:25:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 16:25:20,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468535152] [2020-10-27 16:25:20,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:25:20,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 16:25:20,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384905900] [2020-10-27 16:25:20,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:25:20,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:25:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:25:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:25:20,498 INFO L87 Difference]: Start difference. First operand 8877 states and 11945 transitions. Second operand 5 states. [2020-10-27 16:25:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:25:53,955 INFO L93 Difference]: Finished difference Result 24911 states and 34371 transitions. [2020-10-27 16:25:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:25:53,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1684 [2020-10-27 16:25:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:25:54,030 INFO L225 Difference]: With dead ends: 24911 [2020-10-27 16:25:54,031 INFO L226 Difference]: Without dead ends: 16040 [2020-10-27 16:25:54,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:25:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16040 states. [2020-10-27 16:25:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16040 to 15946. [2020-10-27 16:25:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15946 states. [2020-10-27 16:25:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15946 states to 15946 states and 21039 transitions. [2020-10-27 16:25:54,456 INFO L78 Accepts]: Start accepts. Automaton has 15946 states and 21039 transitions. Word has length 1684 [2020-10-27 16:25:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:25:54,457 INFO L481 AbstractCegarLoop]: Abstraction has 15946 states and 21039 transitions. [2020-10-27 16:25:54,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:25:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15946 states and 21039 transitions. [2020-10-27 16:25:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2020-10-27 16:25:54,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:25:54,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:54,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:25:54,526 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:25:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:25:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1125709003, now seen corresponding path program 1 times [2020-10-27 16:25:54,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:25:54,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351043040] [2020-10-27 16:25:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:25:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:59,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:25:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 16:25:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1669 [2020-10-27 16:25:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:26:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:26:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:26:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:26:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:00,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 16:26:00,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 16:26:00,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:26:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 16:26:00,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0