./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.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_label43+token_ring.10.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 dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:16:39,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:16:39,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:16:39,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:16:39,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:16:39,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:16:39,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:16:39,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:16:39,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:16:39,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:16:39,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:16:39,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:16:39,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:16:39,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:16:39,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:16:39,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:16:39,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:16:39,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:16:39,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:16:39,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:16:39,416 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:16:39,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:16:39,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:16:39,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:16:39,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:16:39,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:16:39,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:16:39,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:16:39,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:16:39,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:16:39,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:16:39,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:16:39,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:16:39,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:16:39,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:16:39,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:16:39,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:16:39,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:16:39,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:16:39,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:16:39,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:16:39,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:16:39,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:16:39,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:16:39,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:16:39,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:16:39,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:16:39,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:16:39,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:16:39,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:16:39,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:16:39,476 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:16:39,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:16:39,477 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:16:39,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:16:39,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:16:39,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:16:39,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:16:39,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:16:39,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:16:39,478 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:16:39,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:16:39,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:16:39,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:16:39,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:16:39,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:16:39,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:16:39,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:16:39,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:16:39,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:16:39,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:16:39,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:16:39,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:16:39,482 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:16:39,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:16:39,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:16:39,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd [2022-07-12 08:16:39,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:16:39,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:16:39,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:16:39,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:16:39,733 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:16:39,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2022-07-12 08:16:39,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4988448d0/418eab354ddc46089bc2bdb8cceff615/FLAGf1a238b2c [2022-07-12 08:16:40,680 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:16:40,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2022-07-12 08:16:40,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4988448d0/418eab354ddc46089bc2bdb8cceff615/FLAGf1a238b2c [2022-07-12 08:16:40,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4988448d0/418eab354ddc46089bc2bdb8cceff615 [2022-07-12 08:16:40,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:16:40,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:16:40,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:16:40,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:16:40,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:16:40,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:16:40" (1/1) ... [2022-07-12 08:16:40,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a4340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:40, skipping insertion in model container [2022-07-12 08:16:40,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:16:40" (1/1) ... [2022-07-12 08:16:40,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:16:40,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:16:42,668 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_label43+token_ring.10.cil-1.c[381679,381692] [2022-07-12 08:16:42,692 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_label43+token_ring.10.cil-1.c[383339,383352] [2022-07-12 08:16:42,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:16:42,989 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:16:43,714 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_label43+token_ring.10.cil-1.c[381679,381692] [2022-07-12 08:16:43,719 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_label43+token_ring.10.cil-1.c[383339,383352] [2022-07-12 08:16:43,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:16:43,841 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:16:43,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43 WrapperNode [2022-07-12 08:16:43,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:16:43,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:16:43,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:16:43,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:16:43,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:43,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,379 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2022-07-12 08:16:44,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:16:44,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:16:44,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:16:44,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:16:44,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:44,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:45,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:45,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:16:45,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:16:45,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:16:45,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:16:45,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (1/1) ... [2022-07-12 08:16:45,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:16:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:16:45,136 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 08:16:45,159 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 08:16:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:16:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:16:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:16:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:16:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:16:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:16:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:16:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:16:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:16:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:16:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:16:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:16:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:16:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:16:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:16:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:16:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:16:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:16:45,337 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:16:45,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:16:51,345 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:16:51,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:16:51,376 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-12 08:16:51,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:16:51 BoogieIcfgContainer [2022-07-12 08:16:51,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:16:51,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:16:51,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:16:51,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:16:51,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:16:40" (1/3) ... [2022-07-12 08:16:51,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b10604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:16:51, skipping insertion in model container [2022-07-12 08:16:51,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:16:43" (2/3) ... [2022-07-12 08:16:51,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b10604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:16:51, skipping insertion in model container [2022-07-12 08:16:51,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:16:51" (3/3) ... [2022-07-12 08:16:51,388 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-1.c [2022-07-12 08:16:51,400 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:16:51,400 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:16:51,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:16:51,501 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@28b40362, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d377c85 [2022-07-12 08:16:51,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:16:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 08:16:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:16:51,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:16:51,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:16:51,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:16:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:16:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2022-07-12 08:16:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:16:51,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122123241] [2022-07-12 08:16:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:16:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:16:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:16:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:16:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:16:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:16:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:16:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:51,916 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 08:16:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:16:51,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122123241] [2022-07-12 08:16:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122123241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:16:51,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:16:51,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:16:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114152012] [2022-07-12 08:16:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:16:51,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:16:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:16:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:16:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:16:51,953 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:16:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:16:53,571 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2022-07-12 08:16:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:16:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:16:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:16:53,602 INFO L225 Difference]: With dead ends: 5155 [2022-07-12 08:16:53,603 INFO L226 Difference]: Without dead ends: 2575 [2022-07-12 08:16:53,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:16:53,620 INFO L413 NwaCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:16:53,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 17032 Invalid, 678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:16:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-07-12 08:16:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2022-07-12 08:16:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-12 08:16:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2022-07-12 08:16:53,874 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2022-07-12 08:16:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:16:53,876 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2022-07-12 08:16:53,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:16:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2022-07-12 08:16:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:16:53,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:16:53,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:16:53,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:16:53,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:16:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:16:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2022-07-12 08:16:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:16:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911071282] [2022-07-12 08:16:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:16:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:16:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:16:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:16:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:16:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:16:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:16:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:54,207 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 08:16:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:16:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911071282] [2022-07-12 08:16:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911071282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:16:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:16:54,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:16:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679389695] [2022-07-12 08:16:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:16:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:16:54,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:16:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:16:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:16:54,218 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:16:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:16:57,329 INFO L93 Difference]: Finished difference Result 3362 states and 5958 transitions. [2022-07-12 08:16:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:16:57,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:16:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:16:57,346 INFO L225 Difference]: With dead ends: 3362 [2022-07-12 08:16:57,346 INFO L226 Difference]: Without dead ends: 3046 [2022-07-12 08:16:57,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:16:57,351 INFO L413 NwaCegarLoop]: 4852 mSDtfsCounter, 5234 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 22385 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:16:57,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5251 Valid, 22385 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 08:16:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-07-12 08:16:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2787. [2022-07-12 08:16:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.8050660792951543) internal successors, (4917), 2729 states have internal predecessors, (4917), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-07-12 08:16:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5016 transitions. [2022-07-12 08:16:57,451 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5016 transitions. Word has length 157 [2022-07-12 08:16:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:16:57,451 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 5016 transitions. [2022-07-12 08:16:57,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:16:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5016 transitions. [2022-07-12 08:16:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:16:57,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:16:57,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:16:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:16:57,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:16:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:16:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2022-07-12 08:16:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:16:57,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063549857] [2022-07-12 08:16:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:16:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:16:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:16:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:16:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:16:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:16:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:16:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:16:57,594 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 08:16:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:16:57,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063549857] [2022-07-12 08:16:57,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063549857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:16:57,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:16:57,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:16:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969503811] [2022-07-12 08:16:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:16:57,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:16:57,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:16:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:16:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:16:57,597 INFO L87 Difference]: Start difference. First operand 2787 states and 5016 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:00,580 INFO L93 Difference]: Finished difference Result 4512 states and 7800 transitions. [2022-07-12 08:17:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:00,600 INFO L225 Difference]: With dead ends: 4512 [2022-07-12 08:17:00,601 INFO L226 Difference]: Without dead ends: 3866 [2022-07-12 08:17:00,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:00,614 INFO L413 NwaCegarLoop]: 4779 mSDtfsCounter, 5274 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 22237 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:00,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 22237 Invalid, 2757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 08:17:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2022-07-12 08:17:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3399. [2022-07-12 08:17:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3284 states have (on average 1.7649208282582216) internal successors, (5796), 3291 states have internal predecessors, (5796), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-07-12 08:17:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5981 transitions. [2022-07-12 08:17:00,755 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5981 transitions. Word has length 157 [2022-07-12 08:17:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:00,755 INFO L495 AbstractCegarLoop]: Abstraction has 3399 states and 5981 transitions. [2022-07-12 08:17:00,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5981 transitions. [2022-07-12 08:17:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:00,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:00,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:00,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:17:00,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2022-07-12 08:17:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:00,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801612568] [2022-07-12 08:17:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:00,932 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 08:17:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801612568] [2022-07-12 08:17:00,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801612568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:00,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:00,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043198763] [2022-07-12 08:17:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:00,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:00,935 INFO L87 Difference]: Start difference. First operand 3399 states and 5981 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:03,826 INFO L93 Difference]: Finished difference Result 6762 states and 11393 transitions. [2022-07-12 08:17:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:03,854 INFO L225 Difference]: With dead ends: 6762 [2022-07-12 08:17:03,855 INFO L226 Difference]: Without dead ends: 5504 [2022-07-12 08:17:03,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:03,864 INFO L413 NwaCegarLoop]: 4843 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22376 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:03,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22376 Invalid, 2897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 08:17:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2022-07-12 08:17:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4625. [2022-07-12 08:17:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4406 states have (on average 1.7149341806627327) internal successors, (7556), 4417 states have internal predecessors, (7556), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-07-12 08:17:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7919 transitions. [2022-07-12 08:17:04,088 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7919 transitions. Word has length 157 [2022-07-12 08:17:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:04,093 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 7919 transitions. [2022-07-12 08:17:04,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7919 transitions. [2022-07-12 08:17:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:04,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:04,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:17:04,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2022-07-12 08:17:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:04,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634573833] [2022-07-12 08:17:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:04,241 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 08:17:04,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:04,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634573833] [2022-07-12 08:17:04,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634573833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:04,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:04,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:04,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164610315] [2022-07-12 08:17:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:04,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:04,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:04,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:04,246 INFO L87 Difference]: Start difference. First operand 4625 states and 7919 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:07,211 INFO L93 Difference]: Finished difference Result 11260 states and 18593 transitions. [2022-07-12 08:17:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:07,256 INFO L225 Difference]: With dead ends: 11260 [2022-07-12 08:17:07,256 INFO L226 Difference]: Without dead ends: 8776 [2022-07-12 08:17:07,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:07,270 INFO L413 NwaCegarLoop]: 4840 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22373 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:07,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22373 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 08:17:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-07-12 08:17:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7083. [2022-07-12 08:17:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 6656 states have (on average 1.6652644230769231) internal successors, (11084), 6675 states have internal predecessors, (11084), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-07-12 08:17:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11821 transitions. [2022-07-12 08:17:07,695 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 11821 transitions. Word has length 157 [2022-07-12 08:17:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:07,696 INFO L495 AbstractCegarLoop]: Abstraction has 7083 states and 11821 transitions. [2022-07-12 08:17:07,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 11821 transitions. [2022-07-12 08:17:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:07,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:07,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:17:07,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2022-07-12 08:17:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:07,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320937864] [2022-07-12 08:17:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:07,847 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 08:17:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320937864] [2022-07-12 08:17:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320937864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:07,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:07,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290689511] [2022-07-12 08:17:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:07,850 INFO L87 Difference]: Start difference. First operand 7083 states and 11821 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:11,037 INFO L93 Difference]: Finished difference Result 20254 states and 33049 transitions. [2022-07-12 08:17:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:11,108 INFO L225 Difference]: With dead ends: 20254 [2022-07-12 08:17:11,108 INFO L226 Difference]: Without dead ends: 15312 [2022-07-12 08:17:11,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:11,134 INFO L413 NwaCegarLoop]: 4837 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22370 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:11,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22370 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:17:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2022-07-12 08:17:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 12013. [2022-07-12 08:17:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 11170 states have (on average 1.6257833482542525) internal successors, (18160), 11205 states have internal predecessors, (18160), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-07-12 08:17:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19699 transitions. [2022-07-12 08:17:11,844 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19699 transitions. Word has length 157 [2022-07-12 08:17:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:11,844 INFO L495 AbstractCegarLoop]: Abstraction has 12013 states and 19699 transitions. [2022-07-12 08:17:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19699 transitions. [2022-07-12 08:17:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:11,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:11,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:11,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:17:11,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:11,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2022-07-12 08:17:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:11,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356013550] [2022-07-12 08:17:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:11,991 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 08:17:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356013550] [2022-07-12 08:17:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356013550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:11,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:11,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135688463] [2022-07-12 08:17:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:11,994 INFO L87 Difference]: Start difference. First operand 12013 states and 19699 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:15,905 INFO L93 Difference]: Finished difference Result 38240 states and 62149 transitions. [2022-07-12 08:17:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:16,016 INFO L225 Difference]: With dead ends: 38240 [2022-07-12 08:17:16,016 INFO L226 Difference]: Without dead ends: 28368 [2022-07-12 08:17:16,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:16,062 INFO L413 NwaCegarLoop]: 4834 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22367 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:16,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22367 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 08:17:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28368 states. [2022-07-12 08:17:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28368 to 21903. [2022-07-12 08:17:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5995649594621317) internal successors, (32356), 20295 states have internal predecessors, (32356), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-07-12 08:17:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35661 transitions. [2022-07-12 08:17:17,305 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35661 transitions. Word has length 157 [2022-07-12 08:17:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:17,306 INFO L495 AbstractCegarLoop]: Abstraction has 21903 states and 35661 transitions. [2022-07-12 08:17:17,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35661 transitions. [2022-07-12 08:17:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:17,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:17,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:17:17,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2022-07-12 08:17:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622288818] [2022-07-12 08:17:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:17,450 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 08:17:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:17,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622288818] [2022-07-12 08:17:17,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622288818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:17,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:17,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247643335] [2022-07-12 08:17:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:17,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:17,452 INFO L87 Difference]: Start difference. First operand 21903 states and 35661 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:20,067 INFO L93 Difference]: Finished difference Result 48585 states and 79664 transitions. [2022-07-12 08:17:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:17:20,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:20,179 INFO L225 Difference]: With dead ends: 48585 [2022-07-12 08:17:20,179 INFO L226 Difference]: Without dead ends: 28821 [2022-07-12 08:17:20,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:17:20,234 INFO L413 NwaCegarLoop]: 4508 mSDtfsCounter, 5073 mSDsluCounter, 12536 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17044 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:20,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5091 Valid, 17044 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:17:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2022-07-12 08:17:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 21903. [2022-07-12 08:17:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5963515918528772) internal successors, (32291), 20295 states have internal predecessors, (32291), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-07-12 08:17:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35596 transitions. [2022-07-12 08:17:21,666 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35596 transitions. Word has length 157 [2022-07-12 08:17:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:21,666 INFO L495 AbstractCegarLoop]: Abstraction has 21903 states and 35596 transitions. [2022-07-12 08:17:21,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35596 transitions. [2022-07-12 08:17:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:21,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:21,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:17:21,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2022-07-12 08:17:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:21,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47502035] [2022-07-12 08:17:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:21,814 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 08:17:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47502035] [2022-07-12 08:17:21,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47502035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:21,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:21,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954554133] [2022-07-12 08:17:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:21,817 INFO L87 Difference]: Start difference. First operand 21903 states and 35596 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:27,232 INFO L93 Difference]: Finished difference Result 74083 states and 120373 transitions. [2022-07-12 08:17:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:27,432 INFO L225 Difference]: With dead ends: 74083 [2022-07-12 08:17:27,432 INFO L226 Difference]: Without dead ends: 54321 [2022-07-12 08:17:27,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:27,493 INFO L413 NwaCegarLoop]: 4818 mSDtfsCounter, 5261 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:27,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22351 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:17:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54321 states. [2022-07-12 08:17:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54321 to 41872. [2022-07-12 08:17:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41872 states, 38533 states have (on average 1.5805154023823735) internal successors, (60902), 38664 states have internal predecessors, (60902), 2441 states have call successors, (2441), 769 states have call predecessors, (2441), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-07-12 08:17:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41872 states to 41872 states and 68225 transitions. [2022-07-12 08:17:30,090 INFO L78 Accepts]: Start accepts. Automaton has 41872 states and 68225 transitions. Word has length 157 [2022-07-12 08:17:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:30,091 INFO L495 AbstractCegarLoop]: Abstraction has 41872 states and 68225 transitions. [2022-07-12 08:17:30,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 41872 states and 68225 transitions. [2022-07-12 08:17:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:30,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:30,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:17:30,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2022-07-12 08:17:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312375723] [2022-07-12 08:17:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:30,245 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 08:17:30,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312375723] [2022-07-12 08:17:30,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312375723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:30,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:30,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:30,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996975770] [2022-07-12 08:17:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:30,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:30,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:30,248 INFO L87 Difference]: Start difference. First operand 41872 states and 68225 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:17:39,106 INFO L93 Difference]: Finished difference Result 146022 states and 239430 transitions. [2022-07-12 08:17:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:17:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:17:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:17:39,489 INFO L225 Difference]: With dead ends: 146022 [2022-07-12 08:17:39,489 INFO L226 Difference]: Without dead ends: 106291 [2022-07-12 08:17:39,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:17:39,590 INFO L413 NwaCegarLoop]: 4762 mSDtfsCounter, 5287 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22220 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:17:39,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5304 Valid, 22220 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 08:17:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2022-07-12 08:17:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 81938. [2022-07-12 08:17:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81938 states, 75271 states have (on average 1.57186698728594) internal successors, (118316), 75530 states have internal predecessors, (118316), 4873 states have call successors, (4873), 1537 states have call predecessors, (4873), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2022-07-12 08:17:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81938 states to 81938 states and 135133 transitions. [2022-07-12 08:17:45,551 INFO L78 Accepts]: Start accepts. Automaton has 81938 states and 135133 transitions. Word has length 157 [2022-07-12 08:17:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:17:45,551 INFO L495 AbstractCegarLoop]: Abstraction has 81938 states and 135133 transitions. [2022-07-12 08:17:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:17:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 81938 states and 135133 transitions. [2022-07-12 08:17:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 08:17:45,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:17:45,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:17:45,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:17:45,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:17:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:17:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2022-07-12 08:17:45,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:17:45,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998268946] [2022-07-12 08:17:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:17:45,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:17:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:17:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 08:17:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 08:17:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:17:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 08:17:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:17:45,708 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 08:17:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:17:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998268946] [2022-07-12 08:17:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998268946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:17:45,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:17:45,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:17:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72416055] [2022-07-12 08:17:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:17:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:17:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:17:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:17:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:17:45,711 INFO L87 Difference]: Start difference. First operand 81938 states and 135133 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:18:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:18:08,361 INFO L93 Difference]: Finished difference Result 328044 states and 541554 transitions. [2022-07-12 08:18:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:18:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-12 08:18:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:18:09,554 INFO L225 Difference]: With dead ends: 328044 [2022-07-12 08:18:09,554 INFO L226 Difference]: Without dead ends: 248247