./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_label49+token_ring.08.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 cc9459d71a43b78b6be6f61a2c5766a75503f0e4a415faec33f88f27c796c833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:07:29,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:07:29,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:07:29,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:07:29,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:07:29,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:07:29,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:07:29,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:07:29,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:07:29,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:07:29,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:07:29,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:07:29,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:07:29,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:07:29,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:07:29,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:07:29,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:07:29,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:07:29,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:07:29,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:07:29,412 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:07:29,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:07:29,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:07:29,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:07:29,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:07:29,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:07:29,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:07:29,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:07:29,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:07:29,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:07:29,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:07:29,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:07:29,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:07:29,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:07:29,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:07:29,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:07:29,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:07:29,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:07:29,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:07:29,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:07:29,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:07:29,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:07:29,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:07:29,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:07:29,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:07:29,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:07:29,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:07:29,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:07:29,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:07:29,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:07:29,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:07:29,471 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:07:29,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:07:29,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:07:29,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:07:29,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:07:29,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:07:29,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:07:29,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:07:29,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:07:29,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:07:29,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:07:29,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:07:29,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:07:29,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:07:29,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:07:29,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:07:29,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:07:29,476 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:07:29,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:07:29,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:07:29,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc9459d71a43b78b6be6f61a2c5766a75503f0e4a415faec33f88f27c796c833 [2022-07-21 07:07:29,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:07:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:07:29,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:07:29,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:07:29,797 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:07:29,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c [2022-07-21 07:07:29,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42f6047/2ddebcbac03c4fb3b4a2efb4f6b0b4b1/FLAGf1f23d94a [2022-07-21 07:07:30,750 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:07:30,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c [2022-07-21 07:07:30,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42f6047/2ddebcbac03c4fb3b4a2efb4f6b0b4b1/FLAGf1f23d94a [2022-07-21 07:07:30,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42f6047/2ddebcbac03c4fb3b4a2efb4f6b0b4b1 [2022-07-21 07:07:30,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:07:30,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:07:30,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:07:30,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:07:30,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:07:30,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:07:30" (1/1) ... [2022-07-21 07:07:30,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0a65f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:30, skipping insertion in model container [2022-07-21 07:07:30,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:07:30" (1/1) ... [2022-07-21 07:07:30,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:07:31,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:07:32,608 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_label49+token_ring.08.cil-1.c[380593,380606] [2022-07-21 07:07:32,632 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_label49+token_ring.08.cil-1.c[383339,383352] [2022-07-21 07:07:32,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:07:32,853 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:07:33,759 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_label49+token_ring.08.cil-1.c[380593,380606] [2022-07-21 07:07:33,775 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_label49+token_ring.08.cil-1.c[383339,383352] [2022-07-21 07:07:33,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:07:33,858 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:07:33,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33 WrapperNode [2022-07-21 07:07:33,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:07:33,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:07:33,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:07:33,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:07:33,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:33,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,327 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-07-21 07:07:34,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:07:34,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:07:34,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:07:34,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:07:34,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:07:34,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:07:34,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:07:34,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:07:34,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (1/1) ... [2022-07-21 07:07:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:07:34,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:07:34,877 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) [2022-07-21 07:07:34,940 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 [2022-07-21 07:07:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:07:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 07:07:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 07:07:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 07:07:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 07:07:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 07:07:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 07:07:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 07:07:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 07:07:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 07:07:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 07:07:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 07:07:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 07:07:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:07:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:07:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:07:35,153 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:07:35,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:07:41,104 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:07:41,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:07:41,130 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 07:07:41,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:07:41 BoogieIcfgContainer [2022-07-21 07:07:41,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:07:41,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:07:41,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:07:41,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:07:41,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:07:30" (1/3) ... [2022-07-21 07:07:41,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f287ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:07:41, skipping insertion in model container [2022-07-21 07:07:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:33" (2/3) ... [2022-07-21 07:07:41,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f287ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:07:41, skipping insertion in model container [2022-07-21 07:07:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:07:41" (3/3) ... [2022-07-21 07:07:41,141 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.08.cil-1.c [2022-07-21 07:07:41,152 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:07:41,153 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:07:41,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:07:41,236 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@316ab78f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8ea0d46 [2022-07-21 07:07:41,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:07:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 07:07:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:41,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:41,265 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] [2022-07-21 07:07:41,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-07-21 07:07:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:41,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982232253] [2022-07-21 07:07:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:41,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982232253] [2022-07-21 07:07:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982232253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:41,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:41,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:07:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074354921] [2022-07-21 07:07:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:07:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:07:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:07:41,679 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:42,901 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-07-21 07:07:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:07:42,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:42,937 INFO L225 Difference]: With dead ends: 5022 [2022-07-21 07:07:42,937 INFO L226 Difference]: Without dead ends: 2496 [2022-07-21 07:07:42,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:07:42,951 INFO L413 NwaCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16860 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:42,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 16860 Invalid, 563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 07:07:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-07-21 07:07:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-07-21 07:07:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 07:07:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-07-21 07:07:43,088 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-07-21 07:07:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:43,089 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-07-21 07:07:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-07-21 07:07:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:43,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:43,099 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] [2022-07-21 07:07:43,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:07:43,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-07-21 07:07:43,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:43,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610133094] [2022-07-21 07:07:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:43,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610133094] [2022-07-21 07:07:43,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610133094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:43,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:43,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:07:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138962550] [2022-07-21 07:07:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:07:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:07:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:07:43,347 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:45,293 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-07-21 07:07:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:07:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:45,308 INFO L225 Difference]: With dead ends: 3126 [2022-07-21 07:07:45,308 INFO L226 Difference]: Without dead ends: 2865 [2022-07-21 07:07:45,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:07:45,311 INFO L413 NwaCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:45,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 17032 Invalid, 1531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 07:07:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-07-21 07:07:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-07-21 07:07:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 07:07:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-07-21 07:07:45,472 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-07-21 07:07:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:45,473 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-07-21 07:07:45,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-07-21 07:07:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:45,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:45,475 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] [2022-07-21 07:07:45,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:07:45,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-07-21 07:07:45,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741845825] [2022-07-21 07:07:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741845825] [2022-07-21 07:07:45,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741845825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:45,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:45,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231751180] [2022-07-21 07:07:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:45,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:45,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:45,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:45,646 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:47,963 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-07-21 07:07:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:47,979 INFO L225 Difference]: With dead ends: 3779 [2022-07-21 07:07:47,979 INFO L226 Difference]: Without dead ends: 3246 [2022-07-21 07:07:47,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:47,983 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:47,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5079 Valid, 21869 Invalid, 2287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 07:07:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-07-21 07:07:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-07-21 07:07:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-21 07:07:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-07-21 07:07:48,079 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-07-21 07:07:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:48,079 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-07-21 07:07:48,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-07-21 07:07:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:48,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:48,082 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] [2022-07-21 07:07:48,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:07:48,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-07-21 07:07:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560235356] [2022-07-21 07:07:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560235356] [2022-07-21 07:07:48,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560235356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:48,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:48,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280876130] [2022-07-21 07:07:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:48,224 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:50,382 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-07-21 07:07:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:50,401 INFO L225 Difference]: With dead ends: 4741 [2022-07-21 07:07:50,403 INFO L226 Difference]: Without dead ends: 3955 [2022-07-21 07:07:50,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:50,419 INFO L413 NwaCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:50,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 21232 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 07:07:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-21 07:07:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-07-21 07:07:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 07:07:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-07-21 07:07:50,579 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-07-21 07:07:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:50,580 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-07-21 07:07:50,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-07-21 07:07:50,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:50,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:50,588 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] [2022-07-21 07:07:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:07:50,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-07-21 07:07:50,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:50,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40888224] [2022-07-21 07:07:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:50,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40888224] [2022-07-21 07:07:50,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40888224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:50,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:50,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:50,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576841108] [2022-07-21 07:07:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:50,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:50,724 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:53,059 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-07-21 07:07:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:53,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:53,082 INFO L225 Difference]: With dead ends: 6592 [2022-07-21 07:07:53,082 INFO L226 Difference]: Without dead ends: 5299 [2022-07-21 07:07:53,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:53,089 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21857 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:53,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 21857 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 07:07:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-07-21 07:07:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-07-21 07:07:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 07:07:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-07-21 07:07:53,317 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-07-21 07:07:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:53,317 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-07-21 07:07:53,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-07-21 07:07:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:53,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:53,322 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] [2022-07-21 07:07:53,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:07:53,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:53,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-07-21 07:07:53,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:53,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282047334] [2022-07-21 07:07:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:53,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282047334] [2022-07-21 07:07:53,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282047334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:53,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:53,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578628289] [2022-07-21 07:07:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:53,462 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:55,925 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-07-21 07:07:55,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:55,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:55,963 INFO L225 Difference]: With dead ends: 10286 [2022-07-21 07:07:55,963 INFO L226 Difference]: Without dead ends: 7978 [2022-07-21 07:07:55,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:55,976 INFO L413 NwaCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21849 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:55,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 21849 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:07:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-07-21 07:07:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-07-21 07:07:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-21 07:07:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-07-21 07:07:56,372 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-07-21 07:07:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:56,372 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-07-21 07:07:56,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-07-21 07:07:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:56,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:56,377 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] [2022-07-21 07:07:56,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:07:56,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-07-21 07:07:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675271337] [2022-07-21 07:07:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:56,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675271337] [2022-07-21 07:07:56,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675271337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:56,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:56,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:56,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215506628] [2022-07-21 07:07:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:56,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:56,506 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:58,779 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-07-21 07:07:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:58,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:07:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:58,837 INFO L225 Difference]: With dead ends: 17692 [2022-07-21 07:07:58,838 INFO L226 Difference]: Without dead ends: 13340 [2022-07-21 07:07:58,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:58,860 INFO L413 NwaCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21844 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:58,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5068 Valid, 21844 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 07:07:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-07-21 07:07:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-07-21 07:07:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 07:07:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-07-21 07:07:59,409 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-07-21 07:07:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:59,409 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-07-21 07:07:59,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-07-21 07:07:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:07:59,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:59,417 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] [2022-07-21 07:07:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:07:59,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-07-21 07:07:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333029429] [2022-07-21 07:07:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:07:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:07:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:07:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:07:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333029429] [2022-07-21 07:07:59,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333029429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:59,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:59,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425200164] [2022-07-21 07:07:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:59,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:59,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:59,546 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:01,256 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-07-21 07:08:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:08:01,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:08:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:01,378 INFO L225 Difference]: With dead ends: 21934 [2022-07-21 07:08:01,378 INFO L226 Difference]: Without dead ends: 13481 [2022-07-21 07:08:01,402 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 [2022-07-21 07:08:01,404 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20905 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:01,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 20905 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 07:08:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-07-21 07:08:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-07-21 07:08:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 07:08:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-07-21 07:08:01,958 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-07-21 07:08:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:01,958 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-07-21 07:08:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-07-21 07:08:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:08:01,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:01,966 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] [2022-07-21 07:08:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:08:01,966 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-07-21 07:08:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:01,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368580438] [2022-07-21 07:08:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:08:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:08:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:08:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:08:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368580438] [2022-07-21 07:08:02,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368580438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:02,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:02,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142535580] [2022-07-21 07:08:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:02,089 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:05,297 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-07-21 07:08:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:08:05,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:08:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:05,383 INFO L225 Difference]: With dead ends: 32469 [2022-07-21 07:08:05,383 INFO L226 Difference]: Without dead ends: 24016 [2022-07-21 07:08:05,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:08:05,423 INFO L413 NwaCegarLoop]: 4641 mSDtfsCounter, 5045 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5060 SdHoareTripleChecker+Valid, 21833 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:05,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5060 Valid, 21833 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:08:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-07-21 07:08:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-07-21 07:08:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-21 07:08:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-07-21 07:08:06,526 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-07-21 07:08:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:06,527 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-07-21 07:08:06,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-07-21 07:08:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:08:06,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:06,539 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] [2022-07-21 07:08:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:08:06,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-07-21 07:08:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052081679] [2022-07-21 07:08:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:08:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:08:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:08:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:08:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:06,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052081679] [2022-07-21 07:08:06,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052081679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:06,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:06,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:06,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550615774] [2022-07-21 07:08:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:06,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:06,670 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:11,993 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-07-21 07:08:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:08:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:08:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:12,330 INFO L225 Difference]: With dead ends: 69837 [2022-07-21 07:08:12,331 INFO L226 Difference]: Without dead ends: 53118 [2022-07-21 07:08:12,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:08:12,377 INFO L413 NwaCegarLoop]: 4634 mSDtfsCounter, 5374 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 21818 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:12,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5398 Valid, 21818 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 07:08:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-07-21 07:08:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-07-21 07:08:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-07-21 07:08:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-07-21 07:08:14,708 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-07-21 07:08:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:14,709 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-07-21 07:08:14,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-07-21 07:08:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:08:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:14,731 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] [2022-07-21 07:08:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:08:14,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-07-21 07:08:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978836172] [2022-07-21 07:08:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:08:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:08:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:08:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:08:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:14,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:14,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978836172] [2022-07-21 07:08:14,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978836172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:14,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:14,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:14,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428459008] [2022-07-21 07:08:14,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:14,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:14,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:14,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:14,860 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:24,399 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2022-07-21 07:08:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:08:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:08:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:24,884 INFO L225 Difference]: With dead ends: 134716 [2022-07-21 07:08:24,884 INFO L226 Difference]: Without dead ends: 101596 [2022-07-21 07:08:24,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:08:24,996 INFO L413 NwaCegarLoop]: 4603 mSDtfsCounter, 5181 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 21361 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:24,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 21361 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 07:08:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2022-07-21 07:08:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2022-07-21 07:08:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-07-21 07:08:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2022-07-21 07:08:30,307 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2022-07-21 07:08:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:30,308 INFO L495 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2022-07-21 07:08:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2022-07-21 07:08:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 07:08:30,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:30,356 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] [2022-07-21 07:08:30,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:08:30,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2022-07-21 07:08:30,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:30,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661337880] [2022-07-21 07:08:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:30,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:08:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:08:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:08:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:08:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:30,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:30,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661337880] [2022-07-21 07:08:30,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661337880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:30,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:30,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462110910] [2022-07-21 07:08:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:30,490 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:08:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:47,334 INFO L93 Difference]: Finished difference Result 260187 states and 427554 transitions. [2022-07-21 07:08:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:08:47,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 07:08:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:48,311 INFO L225 Difference]: With dead ends: 260187 [2022-07-21 07:08:48,311 INFO L226 Difference]: Without dead ends: 194970 [2022-07-21 07:08:48,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:08:48,748 INFO L413 NwaCegarLoop]: 4622 mSDtfsCounter, 5297 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 21806 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:48,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5321 Valid, 21806 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:08:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194970 states.