./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:18:38,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:18:38,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:18:38,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:18:38,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:18:38,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:18:38,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:18:38,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:18:38,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:18:38,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:18:38,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:18:38,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:18:38,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:18:38,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:18:38,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:18:38,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:18:38,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:18:38,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:18:38,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:18:38,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:18:38,152 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:18:38,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:18:38,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:18:38,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:18:38,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:18:38,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:18:38,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:18:38,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:18:38,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:18:38,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:18:38,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:18:38,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:18:38,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:18:38,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:18:38,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:18:38,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:18:38,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:18:38,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:18:38,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:18:38,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:18:38,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:18:38,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:18:38,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:18:38,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:18:38,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:18:38,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:18:38,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:18:38,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:18:38,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:18:38,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:18:38,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:18:38,199 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:18:38,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:18:38,200 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:18:38,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:18:38,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:18:38,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:18:38,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:18:38,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:18:38,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:18:38,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:18:38,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:18:38,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:18:38,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:18:38,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:18:38,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:18:38,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:18:38,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:18:38,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:18:38,204 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:18:38,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:18:38,205 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2022-07-12 08:18:38,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:18:38,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:18:38,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:18:38,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:18:38,428 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:18:38,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-07-12 08:18:38,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a4283fa/38fd6c50fdbf47a2beb582d8fff49bc8/FLAGb0f8ad950 [2022-07-12 08:18:39,157 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:18:39,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-07-12 08:18:39,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a4283fa/38fd6c50fdbf47a2beb582d8fff49bc8/FLAGb0f8ad950 [2022-07-12 08:18:39,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a4283fa/38fd6c50fdbf47a2beb582d8fff49bc8 [2022-07-12 08:18:39,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:18:39,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:18:39,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:18:39,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:18:39,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:18:39,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:18:39" (1/1) ... [2022-07-12 08:18:39,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374276fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:39, skipping insertion in model container [2022-07-12 08:18:39,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:18:39" (1/1) ... [2022-07-12 08:18:39,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:18:39,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:18:40,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-07-12 08:18:40,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-07-12 08:18:41,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:18:41,111 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:18:41,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-07-12 08:18:41,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-07-12 08:18:41,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:18:41,788 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:18:41,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41 WrapperNode [2022-07-12 08:18:41,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:18:41,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:18:41,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:18:41,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:18:41,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:41,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,102 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-07-12 08:18:42,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:18:42,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:18:42,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:18:42,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:18:42,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:18:42,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:18:42,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:18:42,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:18:42,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (1/1) ... [2022-07-12 08:18:42,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:18:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:18:42,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:18:42,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:18:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:18:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:18:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:18:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:18:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:18:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:18:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:18:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:18:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:18:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:18:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:18:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:18:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:18:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:18:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:18:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:18:42,654 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:18:42,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:18:47,399 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:18:47,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:18:47,424 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-12 08:18:47,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:18:47 BoogieIcfgContainer [2022-07-12 08:18:47,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:18:47,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:18:47,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:18:47,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:18:47,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:18:39" (1/3) ... [2022-07-12 08:18:47,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8813e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:18:47, skipping insertion in model container [2022-07-12 08:18:47,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:18:41" (2/3) ... [2022-07-12 08:18:47,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8813e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:18:47, skipping insertion in model container [2022-07-12 08:18:47,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:18:47" (3/3) ... [2022-07-12 08:18:47,432 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2022-07-12 08:18:47,441 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:18:47,442 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:18:47,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:18:47,507 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e55d5c2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67ebad98 [2022-07-12 08:18:47,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:18:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-12 08:18:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:47,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:47,552 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:47,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-07-12 08:18:47,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:47,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177419775] [2022-07-12 08:18:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:47,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177419775] [2022-07-12 08:18:47,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177419775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:47,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:47,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:18:47,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857635809] [2022-07-12 08:18:47,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:18:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:18:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:18:47,916 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:48,921 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-07-12 08:18:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:18:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:18:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:48,949 INFO L225 Difference]: With dead ends: 5081 [2022-07-12 08:18:48,949 INFO L226 Difference]: Without dead ends: 2532 [2022-07-12 08:18:48,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:18:48,961 INFO L413 NwaCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16932 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:18:48,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 16932 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:18:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-07-12 08:18:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-07-12 08:18:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-12 08:18:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-07-12 08:18:49,063 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-07-12 08:18:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:18:49,063 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-07-12 08:18:49,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-07-12 08:18:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:49,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:49,068 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:18:49,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-07-12 08:18:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:49,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808143738] [2022-07-12 08:18:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:49,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:49,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808143738] [2022-07-12 08:18:49,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808143738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:49,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:49,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:18:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000648180] [2022-07-12 08:18:49,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:49,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:18:49,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:18:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:18:49,248 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:50,972 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-07-12 08:18:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:18:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:18:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:50,985 INFO L225 Difference]: With dead ends: 3223 [2022-07-12 08:18:50,985 INFO L226 Difference]: Without dead ends: 2938 [2022-07-12 08:18:50,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:18:50,990 INFO L413 NwaCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17145 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:18:50,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 17145 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:18:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-12 08:18:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-07-12 08:18:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-12 08:18:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-07-12 08:18:51,058 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-07-12 08:18:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:18:51,058 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-07-12 08:18:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-07-12 08:18:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:51,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:51,061 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:51,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:18:51,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:51,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-07-12 08:18:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:51,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280239911] [2022-07-12 08:18:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280239911] [2022-07-12 08:18:51,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280239911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:51,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:51,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:18:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374270720] [2022-07-12 08:18:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:18:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:18:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:18:51,215 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:53,519 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-07-12 08:18:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:18:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:18:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:53,535 INFO L225 Difference]: With dead ends: 3941 [2022-07-12 08:18:53,535 INFO L226 Difference]: Without dead ends: 3358 [2022-07-12 08:18:53,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:18:53,539 INFO L413 NwaCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22069 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:18:53,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 22069 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:18:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-07-12 08:18:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-07-12 08:18:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-12 08:18:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-07-12 08:18:53,641 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-07-12 08:18:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:18:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-07-12 08:18:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-07-12 08:18:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:53,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:53,648 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:53,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:18:53,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:53,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-07-12 08:18:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:53,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933431196] [2022-07-12 08:18:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933431196] [2022-07-12 08:18:53,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933431196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:53,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:53,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:18:53,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960375016] [2022-07-12 08:18:53,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:53,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:18:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:18:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:18:53,789 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:56,136 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-07-12 08:18:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:18:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:18:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:56,151 INFO L225 Difference]: With dead ends: 4998 [2022-07-12 08:18:56,151 INFO L226 Difference]: Without dead ends: 4138 [2022-07-12 08:18:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:18:56,156 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22057 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:18:56,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 22057 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:18:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-07-12 08:18:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-07-12 08:18:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-12 08:18:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-07-12 08:18:56,257 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-07-12 08:18:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:18:56,258 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-07-12 08:18:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-07-12 08:18:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:56,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:56,264 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:56,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:18:56,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:56,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-07-12 08:18:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:56,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032804833] [2022-07-12 08:18:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:56,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:56,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032804833] [2022-07-12 08:18:56,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032804833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:56,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:56,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:18:56,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033084654] [2022-07-12 08:18:56,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:56,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:18:56,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:56,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:18:56,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:18:56,385 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:58,554 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-07-12 08:18:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:18:58,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:18:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:58,579 INFO L225 Difference]: With dead ends: 7038 [2022-07-12 08:18:58,579 INFO L226 Difference]: Without dead ends: 5620 [2022-07-12 08:18:58,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:18:58,588 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:18:58,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5196 Valid, 22052 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:18:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-07-12 08:18:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-07-12 08:18:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-12 08:18:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-07-12 08:18:58,813 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-07-12 08:18:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:18:58,814 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-07-12 08:18:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-07-12 08:18:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:18:58,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:18:58,817 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:18:58,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:18:58,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:18:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:18:58,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-07-12 08:18:58,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:18:58,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437571143] [2022-07-12 08:18:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:18:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:18:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:18:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:18:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:18:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:18:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:18:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:18:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:18:58,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:18:58,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437571143] [2022-07-12 08:18:58,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437571143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:18:58,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:18:58,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:18:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439983666] [2022-07-12 08:18:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:18:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:18:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:18:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:18:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:18:58,938 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:01,224 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-07-12 08:19:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:19:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:01,256 INFO L225 Difference]: With dead ends: 11117 [2022-07-12 08:19:01,256 INFO L226 Difference]: Without dead ends: 8582 [2022-07-12 08:19:01,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:19:01,267 INFO L413 NwaCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:01,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 22047 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 08:19:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-07-12 08:19:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-07-12 08:19:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-12 08:19:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-07-12 08:19:01,581 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-07-12 08:19:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:01,581 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-07-12 08:19:01,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-07-12 08:19:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:01,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:01,585 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:01,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:19:01,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-07-12 08:19:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:01,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38166490] [2022-07-12 08:19:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38166490] [2022-07-12 08:19:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38166490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:01,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753870331] [2022-07-12 08:19:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:01,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:01,707 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:04,076 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-07-12 08:19:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:19:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:04,117 INFO L225 Difference]: With dead ends: 19276 [2022-07-12 08:19:04,117 INFO L226 Difference]: Without dead ends: 14500 [2022-07-12 08:19:04,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:19:04,136 INFO L413 NwaCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5272 Valid, 21355 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 08:19:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-07-12 08:19:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-07-12 08:19:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-12 08:19:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-07-12 08:19:04,614 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-07-12 08:19:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:04,614 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-07-12 08:19:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-07-12 08:19:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:04,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:04,637 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:19:04,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-07-12 08:19:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185749238] [2022-07-12 08:19:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185749238] [2022-07-12 08:19:04,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185749238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:04,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896848620] [2022-07-12 08:19:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:04,744 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:06,559 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-07-12 08:19:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:19:06,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:06,630 INFO L225 Difference]: With dead ends: 23942 [2022-07-12 08:19:06,630 INFO L226 Difference]: Without dead ends: 14669 [2022-07-12 08:19:06,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:19:06,660 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21017 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:06,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 21017 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:19:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-12 08:19:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-07-12 08:19:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-12 08:19:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-07-12 08:19:07,165 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-07-12 08:19:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:07,165 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-07-12 08:19:07,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-07-12 08:19:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:07,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:07,172 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:07,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:19:07,172 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:07,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-07-12 08:19:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:07,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017776327] [2022-07-12 08:19:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:07,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017776327] [2022-07-12 08:19:07,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017776327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:07,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:07,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999991461] [2022-07-12 08:19:07,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:07,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:07,276 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:10,586 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-07-12 08:19:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:19:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:10,646 INFO L225 Difference]: With dead ends: 35561 [2022-07-12 08:19:10,646 INFO L226 Difference]: Without dead ends: 26288 [2022-07-12 08:19:10,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:19:10,668 INFO L413 NwaCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:10,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 22031 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:19:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-07-12 08:19:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-07-12 08:19:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-12 08:19:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-07-12 08:19:11,645 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-07-12 08:19:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:11,645 INFO L495 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-07-12 08:19:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-07-12 08:19:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:11,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:11,656 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:19:11,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-07-12 08:19:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870956349] [2022-07-12 08:19:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:11,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870956349] [2022-07-12 08:19:11,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870956349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:11,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:11,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452172674] [2022-07-12 08:19:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:11,747 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:16,448 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-07-12 08:19:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:19:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:16,613 INFO L225 Difference]: With dead ends: 68201 [2022-07-12 08:19:16,613 INFO L226 Difference]: Without dead ends: 49870 [2022-07-12 08:19:16,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:19:16,667 INFO L413 NwaCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22024 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:16,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5188 Valid, 22024 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:19:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-07-12 08:19:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-07-12 08:19:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-12 08:19:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-07-12 08:19:18,973 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-07-12 08:19:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:18,973 INFO L495 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-07-12 08:19:18,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-07-12 08:19:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:18,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:18,996 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:18,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:19:18,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-07-12 08:19:18,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:18,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113998862] [2022-07-12 08:19:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:18,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:19,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:19,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113998862] [2022-07-12 08:19:19,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113998862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:19,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:19,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533892163] [2022-07-12 08:19:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:19,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:19,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:19,087 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:29,505 INFO L93 Difference]: Finished difference Result 149094 states and 240779 transitions. [2022-07-12 08:19:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:19:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:29,962 INFO L225 Difference]: With dead ends: 149094 [2022-07-12 08:19:29,962 INFO L226 Difference]: Without dead ends: 112586 [2022-07-12 08:19:30,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:19:30,050 INFO L413 NwaCegarLoop]: 4832 mSDtfsCounter, 5249 mSDsluCounter, 17309 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22141 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:30,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 22141 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:19:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112586 states. [2022-07-12 08:19:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112586 to 74232. [2022-07-12 08:19:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74232 states, 67929 states have (on average 1.5573760838522575) internal successors, (105791), 68187 states have internal predecessors, (105791), 4503 states have call successors, (4503), 1542 states have call predecessors, (4503), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-12 08:19:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74232 states to 74232 states and 121614 transitions. [2022-07-12 08:19:35,393 INFO L78 Accepts]: Start accepts. Automaton has 74232 states and 121614 transitions. Word has length 145 [2022-07-12 08:19:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:19:35,393 INFO L495 AbstractCegarLoop]: Abstraction has 74232 states and 121614 transitions. [2022-07-12 08:19:35,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 74232 states and 121614 transitions. [2022-07-12 08:19:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:19:35,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:19:35,425 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:19:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:19:35,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:19:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:19:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2022-07-12 08:19:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:19:35,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103160051] [2022-07-12 08:19:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:19:35,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:19:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:19:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:19:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:19:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:19:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:19:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:19:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:19:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:19:35,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103160051] [2022-07-12 08:19:35,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103160051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:19:35,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:19:35,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:19:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048109018] [2022-07-12 08:19:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:19:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:19:35,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:19:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:19:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:19:35,540 INFO L87 Difference]: Start difference. First operand 74232 states and 121614 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:19:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:19:55,488 INFO L93 Difference]: Finished difference Result 288998 states and 474915 transitions. [2022-07-12 08:19:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:19:55,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-12 08:19:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:19:56,458 INFO L225 Difference]: With dead ends: 288998 [2022-07-12 08:19:56,459 INFO L226 Difference]: Without dead ends: 216904 [2022-07-12 08:19:56,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:19:56,670 INFO L413 NwaCegarLoop]: 4688 mSDtfsCounter, 5457 mSDsluCounter, 17312 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 22000 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:19:56,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5483 Valid, 22000 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:19:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216904 states. [2022-07-12 08:20:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216904 to 145913. [2022-07-12 08:20:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145913 states, 133594 states have (on average 1.5545683189364792) internal successors, (207681), 134108 states have internal predecessors, (207681), 8727 states have call successors, (8727), 3078 states have call predecessors, (8727), 3590 states have return successors, (28922), 9238 states have call predecessors, (28922), 8727 states have call successors, (28922) [2022-07-12 08:20:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145913 states to 145913 states and 245330 transitions. [2022-07-12 08:20:07,436 INFO L78 Accepts]: Start accepts. Automaton has 145913 states and 245330 transitions. Word has length 145 [2022-07-12 08:20:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:07,437 INFO L495 AbstractCegarLoop]: Abstraction has 145913 states and 245330 transitions. [2022-07-12 08:20:07,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 145913 states and 245330 transitions. [2022-07-12 08:20:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 08:20:07,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:07,503 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:20:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:20:07,504 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -560662113, now seen corresponding path program 1 times [2022-07-12 08:20:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236003625] [2022-07-12 08:20:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:07,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:07,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236003625] [2022-07-12 08:20:07,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236003625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:07,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:07,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464969590] [2022-07-12 08:20:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:07,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:07,592 INFO L87 Difference]: Start difference. First operand 145913 states and 245330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)