/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/Problem06_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:25:07,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:25:07,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:25:07,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:25:07,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:25:07,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:25:07,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:25:07,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:25:07,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:25:07,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:25:07,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:25:07,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:25:07,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:25:07,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:25:07,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:25:07,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:25:07,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:25:07,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:25:07,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:25:07,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:25:07,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:25:07,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:25:07,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:25:07,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:25:07,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:25:07,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:25:07,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:25:07,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:25:07,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:25:07,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:25:07,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:25:07,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:25:07,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:25:07,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:25:07,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:25:07,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:25:07,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:25:07,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:25:07,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:25:07,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:25:07,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:25:07,408 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 16:25:07,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:25:07,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:25:07,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:25:07,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:25:07,440 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:25:07,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:25:07,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:25:07,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:25:07,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:25:07,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:25:07,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:25:07,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:25:07,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:25:07,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:25:07,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:25:07,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:25:07,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:25:07,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:25:07,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:25:07,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:25:07,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:25:07,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:25:07,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:25:07,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:25:07,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:25:07,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:25:07,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:25:07,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:25:07,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:25:07,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:25:07,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:25:07,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:25:07,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:25:07,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:25:07,950 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:25:07,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label07.c [2020-10-27 16:25:08,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cc2bffe/b0772c80b0524d488f2f10cebed29048/FLAG12c87cb9a [2020-10-27 16:25:09,194 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:25:09,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label07.c [2020-10-27 16:25:09,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cc2bffe/b0772c80b0524d488f2f10cebed29048/FLAG12c87cb9a [2020-10-27 16:25:09,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cc2bffe/b0772c80b0524d488f2f10cebed29048 [2020-10-27 16:25:09,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:25:09,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:25:09,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:25:09,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:25:09,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:25:09,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:25:09" (1/1) ... [2020-10-27 16:25:09,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6584cba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:09, skipping insertion in model container [2020-10-27 16:25:09,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:25:09" (1/1) ... [2020-10-27 16:25:09,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:25:09,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:25:11,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:25:12,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:25:13,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:25:13,292 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:25:13,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13 WrapperNode [2020-10-27 16:25:13,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:25:13,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:25:13,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:25:13,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:25:13,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (1/1) ... [2020-10-27 16:25:13,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:25:13,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:25:13,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:25:13,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:25:13,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (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 16:25:14,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:25:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:25:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:25:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:25:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:25:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:25:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:25:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:25:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:25:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:25:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:25:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:25:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:25:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:25:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:25:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:25:22,204 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:25:22,205 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:25:22,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:25:22 BoogieIcfgContainer [2020-10-27 16:25:22,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:25:22,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:25:22,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:25:22,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:25:22,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:25:09" (1/3) ... [2020-10-27 16:25:22,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a38da2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:25:22, skipping insertion in model container [2020-10-27 16:25:22,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:13" (2/3) ... [2020-10-27 16:25:22,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a38da2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:25:22, skipping insertion in model container [2020-10-27 16:25:22,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:25:22" (3/3) ... [2020-10-27 16:25:22,219 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label07.c [2020-10-27 16:25:22,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:25:22,239 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:25:22,255 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:25:22,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:25:22,291 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:25:22,291 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:25:22,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:25:22,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:25:22,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:25:22,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:25:22,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:25:22,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:25:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-27 16:25:22,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:25:22,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:22,406 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:25:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:25:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1281464492, now seen corresponding path program 1 times [2020-10-27 16:25:22,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:25:22,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090926330] [2020-10-27 16:25:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:25:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:28,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-27 16:25:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:25:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-27 16:25:28,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 16:25:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:25:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 986 [2020-10-27 16:25:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 16:25:30,363 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:25:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:25:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:25:30,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:25:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:25:30,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:25:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 16:25:30,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:25:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:25:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:25:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:25:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:25:31,878 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 16:25:31,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090926330] [2020-10-27 16:25:31,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:25:31,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:25:31,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046208011] [2020-10-27 16:25:31,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:25:31,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:25:31,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:25:31,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:25:31,913 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-27 16:25:32,154 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:25:32,607 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:25:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:25:58,646 INFO L93 Difference]: Finished difference Result 4885 states and 9214 transitions. [2020-10-27 16:25:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:25:58,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 977 [2020-10-27 16:25:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:25:58,714 INFO L225 Difference]: With dead ends: 4885 [2020-10-27 16:25:58,715 INFO L226 Difference]: Without dead ends: 3498 [2020-10-27 16:25:58,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:25:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-10-27 16:25:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3404. [2020-10-27 16:25:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-10-27 16:25:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5931 transitions. [2020-10-27 16:25:59,003 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5931 transitions. Word has length 977 [2020-10-27 16:25:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:25:59,006 INFO L481 AbstractCegarLoop]: Abstraction has 3404 states and 5931 transitions. [2020-10-27 16:25:59,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:25:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5931 transitions. [2020-10-27 16:25:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-27 16:25:59,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:25:59,064 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:59,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:25:59,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:25:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:25:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1830766667, now seen corresponding path program 1 times [2020-10-27 16:25:59,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:25:59,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406824083] [2020-10-27 16:25:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:25:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:25:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-27 16:26:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:26:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 16:26:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:26:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 16:26:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 983 [2020-10-27 16:26:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:05,268 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:26:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:26:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:05,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:26:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:26:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:26:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:26:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:26:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:26:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:26:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:26:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:26:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:26:06,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406824083] [2020-10-27 16:26:06,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:26:06,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:26:06,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534804963] [2020-10-27 16:26:06,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:26:06,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:26:06,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:26:06,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:26:06,783 INFO L87 Difference]: Start difference. First operand 3404 states and 5931 transitions. Second operand 6 states. [2020-10-27 16:26:07,162 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:26:07,586 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:26:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:26:35,077 INFO L93 Difference]: Finished difference Result 13188 states and 23514 transitions. [2020-10-27 16:26:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:26:35,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 985 [2020-10-27 16:26:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:26:35,138 INFO L225 Difference]: With dead ends: 13188 [2020-10-27 16:26:35,139 INFO L226 Difference]: Without dead ends: 9790 [2020-10-27 16:26:35,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:26:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2020-10-27 16:26:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 9712. [2020-10-27 16:26:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9712 states. [2020-10-27 16:26:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 15896 transitions. [2020-10-27 16:26:35,515 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 15896 transitions. Word has length 985 [2020-10-27 16:26:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:26:35,518 INFO L481 AbstractCegarLoop]: Abstraction has 9712 states and 15896 transitions. [2020-10-27 16:26:35,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:26:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 15896 transitions. [2020-10-27 16:26:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-27 16:26:35,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:26:35,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:35,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:26:35,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:26:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:26:35,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1331846222, now seen corresponding path program 1 times [2020-10-27 16:26:35,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:26:35,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117860111] [2020-10-27 16:26:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:26:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-27 16:26:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:26:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-27 16:26:40,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:26:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 16:26:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 983 [2020-10-27 16:26:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:41,874 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:26:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:26:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:26:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:26:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:26:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:26:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:26:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:42,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:26:42,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 16:26:42,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:26:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 16:26:42,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:26:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:26:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:26:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:26:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:26:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:26:42,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117860111] [2020-10-27 16:26:42,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:26:42,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:26:42,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768060267] [2020-10-27 16:26:42,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:26:42,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:26:42,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:26:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:26:42,926 INFO L87 Difference]: Start difference. First operand 9712 states and 15896 transitions. Second operand 6 states. [2020-10-27 16:26:43,184 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:26:43,537 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:27:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:27:08,347 INFO L93 Difference]: Finished difference Result 37995 states and 64538 transitions. [2020-10-27 16:27:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:27:08,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1002 [2020-10-27 16:27:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:27:08,512 INFO L225 Difference]: With dead ends: 37995 [2020-10-27 16:27:08,512 INFO L226 Difference]: Without dead ends: 28289 [2020-10-27 16:27:08,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:27:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28289 states. [2020-10-27 16:27:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28289 to 28231. [2020-10-27 16:27:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28231 states. [2020-10-27 16:27:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28231 states to 28231 states and 43933 transitions. [2020-10-27 16:27:09,423 INFO L78 Accepts]: Start accepts. Automaton has 28231 states and 43933 transitions. Word has length 1002 [2020-10-27 16:27:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:27:09,425 INFO L481 AbstractCegarLoop]: Abstraction has 28231 states and 43933 transitions. [2020-10-27 16:27:09,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:27:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 28231 states and 43933 transitions. [2020-10-27 16:27:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-27 16:27:09,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:27:09,540 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:09,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:27:09,541 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:27:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:27:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash 47653954, now seen corresponding path program 1 times [2020-10-27 16:27:09,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:27:09,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355650735] [2020-10-27 16:27:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:27:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:14,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 16:27:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 16:27:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:15,237 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:15,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:15,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:15,378 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:27:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:27:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:27:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:27:15,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:27:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:15,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:15,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:27:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:27:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 16:27:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:27:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:27:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 16:27:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 16:27:16,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355650735] [2020-10-27 16:27:16,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:27:16,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:27:16,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700098443] [2020-10-27 16:27:16,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:27:16,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:16,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:27:16,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:27:16,094 INFO L87 Difference]: Start difference. First operand 28231 states and 43933 transitions. Second operand 7 states. [2020-10-27 16:27:16,612 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:27:17,291 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:27:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:27:49,036 INFO L93 Difference]: Finished difference Result 76066 states and 124691 transitions. [2020-10-27 16:27:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:27:49,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-27 16:27:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:27:49,306 INFO L225 Difference]: With dead ends: 76066 [2020-10-27 16:27:49,306 INFO L226 Difference]: Without dead ends: 47841 [2020-10-27 16:27:49,408 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 16:27:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47841 states. [2020-10-27 16:27:50,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47841 to 47595. [2020-10-27 16:27:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47595 states. [2020-10-27 16:27:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47595 states to 47595 states and 72893 transitions. [2020-10-27 16:27:51,104 INFO L78 Accepts]: Start accepts. Automaton has 47595 states and 72893 transitions. Word has length 1034 [2020-10-27 16:27:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:27:51,105 INFO L481 AbstractCegarLoop]: Abstraction has 47595 states and 72893 transitions. [2020-10-27 16:27:51,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:27:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 47595 states and 72893 transitions. [2020-10-27 16:27:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-27 16:27:51,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:27:51,285 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:51,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:27:51,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:27:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:27:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1882291180, now seen corresponding path program 1 times [2020-10-27 16:27:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:27:51,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948460982] [2020-10-27 16:27:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:27:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1076 [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:27:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 16:27:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 16:27:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:56,986 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:56,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:56,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:27:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:27:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:57,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:57,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:27:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 16:27:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:57,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:27:57,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 16:27:57,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:27:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:27:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:27:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 16:27:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 16:27:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 16:27:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:27:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 16:27:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:27:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 86 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 16:27:58,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948460982] [2020-10-27 16:27:58,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:27:58,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:27:58,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472963037] [2020-10-27 16:27:58,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:27:58,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:58,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:27:58,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:27:58,062 INFO L87 Difference]: Start difference. First operand 47595 states and 72893 transitions. Second operand 7 states. [2020-10-27 16:27:58,333 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:27:59,244 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:28:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:19,398 INFO L93 Difference]: Finished difference Result 143541 states and 238113 transitions. [2020-10-27 16:28:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 16:28:19,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1050 [2020-10-27 16:28:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:19,952 INFO L225 Difference]: With dead ends: 143541 [2020-10-27 16:28:19,952 INFO L226 Difference]: Without dead ends: 95952 [2020-10-27 16:28:20,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:28:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95952 states. [2020-10-27 16:28:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95952 to 95855. [2020-10-27 16:28:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95855 states. [2020-10-27 16:28:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95855 states to 95855 states and 151488 transitions. [2020-10-27 16:28:24,350 INFO L78 Accepts]: Start accepts. Automaton has 95855 states and 151488 transitions. Word has length 1050 [2020-10-27 16:28:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:24,351 INFO L481 AbstractCegarLoop]: Abstraction has 95855 states and 151488 transitions. [2020-10-27 16:28:24,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:28:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 95855 states and 151488 transitions. [2020-10-27 16:28:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-27 16:28:25,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:25,022 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:25,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:28:25,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash 486386803, now seen corresponding path program 1 times [2020-10-27 16:28:25,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:25,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659653728] [2020-10-27 16:28:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:30,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-27 16:28:30,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:28:30,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-27 16:28:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:28:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 16:28:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 16:28:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:30,909 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:30,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:31,046 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:28:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:28:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:28:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 37 [2020-10-27 16:28:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:28:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:31,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:31,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:28:31,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:28:31,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:28:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 16:28:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:31,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:28:31,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 16:28:31,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:28:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 16:28:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 16:28:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 16:28:31,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 16:28:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 16:28:32,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659653728] [2020-10-27 16:28:32,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:32,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:28:32,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110105071] [2020-10-27 16:28:32,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:28:32,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:32,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:28:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:28:32,049 INFO L87 Difference]: Start difference. First operand 95855 states and 151488 transitions. Second operand 8 states. [2020-10-27 16:28:32,314 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:34,002 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159