./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN --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 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:05:54,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:05:54,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:05:54,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:05:54,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:05:54,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:05:54,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:05:54,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:05:54,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:05:54,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:05:54,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:05:54,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:05:54,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:05:54,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:05:54,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:05:54,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:05:54,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:05:54,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:05:54,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:05:54,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:05:54,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:05:54,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:05:54,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:05:54,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:05:54,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:05:54,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:05:54,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:05:54,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:05:54,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:05:54,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:05:54,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:05:54,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:05:54,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:05:54,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:05:54,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:05:54,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:05:54,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:05:54,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:05:54,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:05:54,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:05:54,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:05:54,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:05:54,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:05:54,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:05:54,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:05:54,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:05:54,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:05:54,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:05:54,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:05:54,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:05:54,706 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:05:54,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:05:54,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:05:54,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:05:54,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:05:54,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:05:54,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:05:54,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:05:54,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:05:54,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:05:54,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:05:54,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:05:54,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:05:54,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:05:54,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:05:54,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:05:54,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:05:54,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:05:54,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:05:54,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:05:54,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:05:54,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:05:54,715 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:05:54,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:05:54,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:05:54,716 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 [2022-11-20 12:05:55,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:05:55,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:05:55,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:05:55,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:05:55,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:05:55,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2022-11-20 12:05:58,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:05:59,136 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:05:59,137 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2022-11-20 12:05:59,205 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/data/e4a34afe2/de3568a6e6ea45159d2dea76614aff00/FLAG5091266bb [2022-11-20 12:05:59,229 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/data/e4a34afe2/de3568a6e6ea45159d2dea76614aff00 [2022-11-20 12:05:59,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:05:59,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:05:59,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:05:59,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:05:59,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:05:59,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:59" (1/1) ... [2022-11-20 12:05:59,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623f439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:59, skipping insertion in model container [2022-11-20 12:05:59,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:59" (1/1) ... [2022-11-20 12:05:59,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:05:59,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:06:02,396 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[380593,380606] [2022-11-20 12:06:02,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[383339,383352] [2022-11-20 12:06:02,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:02,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:06:04,023 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[380593,380606] [2022-11-20 12:06:04,030 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[383339,383352] [2022-11-20 12:06:04,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:04,144 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:06:04,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04 WrapperNode [2022-11-20 12:06:04,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:06:04,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:04,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:06:04,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:06:04,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:04,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:04,629 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-11-20 12:06:04,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:04,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:06:04,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:06:04,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:06:04,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:04,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:04,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:04,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:06:05,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:06:05,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:06:05,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:06:05,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (1/1) ... [2022-11-20 12:06:05,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:06:05,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:05,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:06:05,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:06:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:06:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 12:06:05,645 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 12:06:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 12:06:05,645 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 12:06:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 12:06:05,646 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 12:06:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-20 12:06:05,646 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-20 12:06:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 12:06:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 12:06:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 12:06:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 12:06:05,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:06:05,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:06:05,865 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:06:05,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:06:16,096 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:06:16,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:06:16,133 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 12:06:16,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:16 BoogieIcfgContainer [2022-11-20 12:06:16,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:06:16,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:06:16,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:06:16,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:06:16,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:05:59" (1/3) ... [2022-11-20 12:06:16,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe7f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:16, skipping insertion in model container [2022-11-20 12:06:16,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04" (2/3) ... [2022-11-20 12:06:16,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe7f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:16, skipping insertion in model container [2022-11-20 12:06:16,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:16" (3/3) ... [2022-11-20 12:06:16,158 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-1.c [2022-11-20 12:06:16,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:06:16,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:06:16,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:06:16,337 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2495e760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:06:16,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:06:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-20 12:06:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:16,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:16,370 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] [2022-11-20 12:06:16,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash 520182233, now seen corresponding path program 1 times [2022-11-20 12:06:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:16,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921920291] [2022-11-20 12:06:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:17,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:17,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921920291] [2022-11-20 12:06:17,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921920291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:17,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:17,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:06:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089637090] [2022-11-20 12:06:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:17,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:17,194 INFO L87 Difference]: Start difference. First operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:19,078 INFO L93 Difference]: Finished difference Result 4921 states and 9054 transitions. [2022-11-20 12:06:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:06:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:19,122 INFO L225 Difference]: With dead ends: 4921 [2022-11-20 12:06:19,123 INFO L226 Difference]: Without dead ends: 2514 [2022-11-20 12:06:19,137 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 [2022-11-20 12:06:19,145 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4567 mSDsluCounter, 12506 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:19,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 16696 Invalid, 895 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [80 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:06:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-11-20 12:06:19,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2427. [2022-11-20 12:06:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2381 states have (on average 1.8299034019319613) internal successors, (4357), 2385 states have internal predecessors, (4357), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-20 12:06:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4420 transitions. [2022-11-20 12:06:19,389 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4420 transitions. Word has length 80 [2022-11-20 12:06:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:19,392 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 4420 transitions. [2022-11-20 12:06:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4420 transitions. [2022-11-20 12:06:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:19,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:19,407 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] [2022-11-20 12:06:19,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:06:19,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash -721258283, now seen corresponding path program 1 times [2022-11-20 12:06:19,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:19,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558320670] [2022-11-20 12:06:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:19,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:19,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558320670] [2022-11-20 12:06:19,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558320670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:19,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:19,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:19,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479812795] [2022-11-20 12:06:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:19,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:19,825 INFO L87 Difference]: Start difference. First operand 2427 states and 4420 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:21,760 INFO L93 Difference]: Finished difference Result 3000 states and 5300 transitions. [2022-11-20 12:06:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:06:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:21,775 INFO L225 Difference]: With dead ends: 3000 [2022-11-20 12:06:21,775 INFO L226 Difference]: Without dead ends: 2705 [2022-11-20 12:06:21,781 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 [2022-11-20 12:06:21,784 INFO L413 NwaCegarLoop]: 4208 mSDtfsCounter, 4495 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 20846 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4505 Valid, 20846 Invalid, 1288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:06:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-11-20 12:06:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2565. [2022-11-20 12:06:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2500 states have (on average 1.8144) internal successors, (4536), 2505 states have internal predecessors, (4536), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-11-20 12:06:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4625 transitions. [2022-11-20 12:06:21,902 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4625 transitions. Word has length 80 [2022-11-20 12:06:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:21,902 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 4625 transitions. [2022-11-20 12:06:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4625 transitions. [2022-11-20 12:06:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:21,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:21,905 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] [2022-11-20 12:06:21,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:06:21,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1887529175, now seen corresponding path program 1 times [2022-11-20 12:06:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465540555] [2022-11-20 12:06:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:22,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465540555] [2022-11-20 12:06:22,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465540555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:22,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:22,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025157235] [2022-11-20 12:06:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:22,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:22,119 INFO L87 Difference]: Start difference. First operand 2565 states and 4625 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:23,892 INFO L93 Difference]: Finished difference Result 3497 states and 6053 transitions. [2022-11-20 12:06:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:06:23,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:23,912 INFO L225 Difference]: With dead ends: 3497 [2022-11-20 12:06:23,919 INFO L226 Difference]: Without dead ends: 3064 [2022-11-20 12:06:23,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:06:23,925 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4493 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20844 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:23,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20844 Invalid, 1286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:06:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-11-20 12:06:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2842. [2022-11-20 12:06:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2739 states have (on average 1.78714859437751) internal successors, (4895), 2746 states have internal predecessors, (4895), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-11-20 12:06:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5040 transitions. [2022-11-20 12:06:24,093 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5040 transitions. Word has length 80 [2022-11-20 12:06:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:24,093 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 5040 transitions. [2022-11-20 12:06:24,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5040 transitions. [2022-11-20 12:06:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:24,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:24,096 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] [2022-11-20 12:06:24,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:06:24,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1833136277, now seen corresponding path program 1 times [2022-11-20 12:06:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:24,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859231003] [2022-11-20 12:06:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:24,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:24,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:24,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859231003] [2022-11-20 12:06:24,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859231003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:24,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:24,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168059931] [2022-11-20 12:06:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:24,302 INFO L87 Difference]: Start difference. First operand 2842 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:26,149 INFO L93 Difference]: Finished difference Result 4458 states and 7508 transitions. [2022-11-20 12:06:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:06:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:26,170 INFO L225 Difference]: With dead ends: 4458 [2022-11-20 12:06:26,170 INFO L226 Difference]: Without dead ends: 3748 [2022-11-20 12:06:26,175 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 [2022-11-20 12:06:26,176 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4489 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 20844 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:26,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 20844 Invalid, 1277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:06:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-11-20 12:06:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3397. [2022-11-20 12:06:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3218 states have (on average 1.7442510876320696) internal successors, (5613), 3229 states have internal predecessors, (5613), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-11-20 12:06:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5876 transitions. [2022-11-20 12:06:26,439 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5876 transitions. Word has length 80 [2022-11-20 12:06:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:26,439 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5876 transitions. [2022-11-20 12:06:26,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5876 transitions. [2022-11-20 12:06:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:26,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:26,443 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] [2022-11-20 12:06:26,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:06:26,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1415739671, now seen corresponding path program 1 times [2022-11-20 12:06:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225335830] [2022-11-20 12:06:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:26,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225335830] [2022-11-20 12:06:26,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225335830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:26,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:26,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765455057] [2022-11-20 12:06:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:26,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:26,609 INFO L87 Difference]: Start difference. First operand 3397 states and 5876 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:28,562 INFO L93 Difference]: Finished difference Result 6787 states and 11028 transitions. [2022-11-20 12:06:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:06:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:28,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:28,594 INFO L225 Difference]: With dead ends: 6787 [2022-11-20 12:06:28,594 INFO L226 Difference]: Without dead ends: 5522 [2022-11-20 12:06:28,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:06:28,602 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4620 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4634 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:28,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4634 Valid, 20834 Invalid, 1266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:06:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2022-11-20 12:06:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4488. [2022-11-20 12:06:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4165 states have (on average 1.6900360144057622) internal successors, (7039), 4184 states have internal predecessors, (7039), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-11-20 12:06:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 7540 transitions. [2022-11-20 12:06:28,977 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 7540 transitions. Word has length 80 [2022-11-20 12:06:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:28,978 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 7540 transitions. [2022-11-20 12:06:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 7540 transitions. [2022-11-20 12:06:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:28,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:28,989 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] [2022-11-20 12:06:28,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:06:28,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2095011925, now seen corresponding path program 1 times [2022-11-20 12:06:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:28,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439900473] [2022-11-20 12:06:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439900473] [2022-11-20 12:06:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439900473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:29,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798180481] [2022-11-20 12:06:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:29,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:29,212 INFO L87 Difference]: Start difference. First operand 4488 states and 7540 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:31,620 INFO L93 Difference]: Finished difference Result 10772 states and 17130 transitions. [2022-11-20 12:06:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:06:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:31,697 INFO L225 Difference]: With dead ends: 10772 [2022-11-20 12:06:31,697 INFO L226 Difference]: Without dead ends: 8416 [2022-11-20 12:06:31,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:06:31,717 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4509 mSDsluCounter, 16627 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 20830 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:31,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4518 Valid, 20830 Invalid, 1436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:06:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-11-20 12:06:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6499. [2022-11-20 12:06:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 5896 states have (on average 1.6290705563093624) internal successors, (9605), 5931 states have internal predecessors, (9605), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-11-20 12:06:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 10620 transitions. [2022-11-20 12:06:32,414 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 10620 transitions. Word has length 80 [2022-11-20 12:06:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:32,414 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 10620 transitions. [2022-11-20 12:06:32,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 10620 transitions. [2022-11-20 12:06:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:32,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:32,423 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] [2022-11-20 12:06:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:06:32,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash -238380713, now seen corresponding path program 1 times [2022-11-20 12:06:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701669194] [2022-11-20 12:06:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:32,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:32,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701669194] [2022-11-20 12:06:32,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701669194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:32,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:32,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803933266] [2022-11-20 12:06:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:32,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:32,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:32,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:32,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:32,635 INFO L87 Difference]: Start difference. First operand 6499 states and 10620 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:35,120 INFO L93 Difference]: Finished difference Result 17486 states and 27496 transitions. [2022-11-20 12:06:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:06:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:35,186 INFO L225 Difference]: With dead ends: 17486 [2022-11-20 12:06:35,186 INFO L226 Difference]: Without dead ends: 13119 [2022-11-20 12:06:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:06:35,210 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4498 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:35,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 20834 Invalid, 1223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:06:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2022-11-20 12:06:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 10695. [2022-11-20 12:06:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10695 states, 9548 states have (on average 1.581587767071638) internal successors, (15101), 9615 states have internal predecessors, (15101), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-11-20 12:06:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10695 states to 10695 states and 17274 transitions. [2022-11-20 12:06:36,290 INFO L78 Accepts]: Start accepts. Automaton has 10695 states and 17274 transitions. Word has length 80 [2022-11-20 12:06:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:36,294 INFO L495 AbstractCegarLoop]: Abstraction has 10695 states and 17274 transitions. [2022-11-20 12:06:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 10695 states and 17274 transitions. [2022-11-20 12:06:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:06:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:36,305 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] [2022-11-20 12:06:36,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:06:36,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 322319065, now seen corresponding path program 1 times [2022-11-20 12:06:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:36,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297908669] [2022-11-20 12:06:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:36,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:06:36,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:36,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297908669] [2022-11-20 12:06:36,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297908669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:36,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:36,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:06:36,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795653037] [2022-11-20 12:06:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:36,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:36,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:36,460 INFO L87 Difference]: Start difference. First operand 10695 states and 17274 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:38,997 INFO L93 Difference]: Finished difference Result 26313 states and 41362 transitions. [2022-11-20 12:06:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:06:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-11-20 12:06:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:39,077 INFO L225 Difference]: With dead ends: 26313 [2022-11-20 12:06:39,077 INFO L226 Difference]: Without dead ends: 17751 [2022-11-20 12:06:39,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:06:39,120 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 4662 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4689 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:39,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4689 Valid, 16580 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:06:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2022-11-20 12:06:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 14888. [2022-11-20 12:06:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 13146 states have (on average 1.5442720219078045) internal successors, (20301), 13278 states have internal predecessors, (20301), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-11-20 12:06:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 23448 transitions. [2022-11-20 12:06:40,828 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 23448 transitions. Word has length 80 [2022-11-20 12:06:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:40,829 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 23448 transitions. [2022-11-20 12:06:40,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:06:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 23448 transitions. [2022-11-20 12:06:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:06:40,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:40,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:40,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:06:40,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2072406432, now seen corresponding path program 1 times [2022-11-20 12:06:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:40,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603796355] [2022-11-20 12:06:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:40,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:06:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:06:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:06:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603796355] [2022-11-20 12:06:41,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603796355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:41,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958966910] [2022-11-20 12:06:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:41,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:41,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:41,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:06:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:06:41,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:06:41,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:41,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958966910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:41,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:41,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 12:06:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692994282] [2022-11-20 12:06:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:41,426 INFO L87 Difference]: Start difference. First operand 14888 states and 23448 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:06:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:43,404 INFO L93 Difference]: Finished difference Result 40051 states and 62244 transitions. [2022-11-20 12:06:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-11-20 12:06:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:43,532 INFO L225 Difference]: With dead ends: 40051 [2022-11-20 12:06:43,532 INFO L226 Difference]: Without dead ends: 27296 [2022-11-20 12:06:43,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:43,583 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:43,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:06:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-11-20 12:06:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 27096. [2022-11-20 12:06:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 23670 states have (on average 1.514321926489227) internal successors, (35844), 23931 states have internal predecessors, (35844), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-11-20 12:06:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 41965 transitions. [2022-11-20 12:06:45,794 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 41965 transitions. Word has length 129 [2022-11-20 12:06:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:45,795 INFO L495 AbstractCegarLoop]: Abstraction has 27096 states and 41965 transitions. [2022-11-20 12:06:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:06:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 41965 transitions. [2022-11-20 12:06:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:06:45,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:45,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:45,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:46,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash -853257536, now seen corresponding path program 1 times [2022-11-20 12:06:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:46,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828975939] [2022-11-20 12:06:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:06:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:06:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:06:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828975939] [2022-11-20 12:06:46,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828975939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757363327] [2022-11-20 12:06:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:46,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:46,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:46,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:46,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:06:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:06:46,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:46,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:46,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757363327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:46,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:46,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 12:06:46,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124815349] [2022-11-20 12:06:46,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:46,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:46,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:46,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:46,605 INFO L87 Difference]: Start difference. First operand 27096 states and 41965 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:06:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:49,941 INFO L93 Difference]: Finished difference Result 76329 states and 117663 transitions. [2022-11-20 12:06:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-11-20 12:06:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:50,251 INFO L225 Difference]: With dead ends: 76329 [2022-11-20 12:06:50,252 INFO L226 Difference]: Without dead ends: 51366 [2022-11-20 12:06:50,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:50,354 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4142 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:06:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51366 states. [2022-11-20 12:06:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51366 to 50970. [2022-11-20 12:06:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50970 states, 44226 states have (on average 1.4955908289241622) internal successors, (66144), 44745 states have internal predecessors, (66144), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-11-20 12:06:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50970 states to 50970 states and 78113 transitions. [2022-11-20 12:06:54,575 INFO L78 Accepts]: Start accepts. Automaton has 50970 states and 78113 transitions. Word has length 129 [2022-11-20 12:06:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:54,576 INFO L495 AbstractCegarLoop]: Abstraction has 50970 states and 78113 transitions. [2022-11-20 12:06:54,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:06:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 50970 states and 78113 transitions. [2022-11-20 12:06:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:06:54,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:54,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:54,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:06:54,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2127588384, now seen corresponding path program 1 times [2022-11-20 12:06:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:54,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619345308] [2022-11-20 12:06:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:06:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:06:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:06:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:06:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:06:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:06:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:06:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:06:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:55,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619345308] [2022-11-20 12:06:55,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619345308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:55,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190342484] [2022-11-20 12:06:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:55,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:55,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:55,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:06:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:06:55,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 12:06:55,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190342484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:55,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:55,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-20 12:06:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880963942] [2022-11-20 12:06:55,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:55,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:55,419 INFO L87 Difference]: Start difference. First operand 50970 states and 78113 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:07:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:02,120 INFO L93 Difference]: Finished difference Result 146009 states and 224673 transitions. [2022-11-20 12:07:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:07:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-11-20 12:07:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:02,968 INFO L225 Difference]: With dead ends: 146009 [2022-11-20 12:07:02,968 INFO L226 Difference]: Without dead ends: 97173 [2022-11-20 12:07:03,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:07:03,124 INFO L413 NwaCegarLoop]: 4394 mSDtfsCounter, 194 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8586 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:03,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8586 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:07:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97173 states. [2022-11-20 12:07:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97173 to 97173. [2022-11-20 12:07:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97173 states, 83954 states have (on average 1.4752245277175595) internal successors, (123851), 84858 states have internal predecessors, (123851), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-11-20 12:07:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97173 states to 97173 states and 148642 transitions. [2022-11-20 12:07:11,769 INFO L78 Accepts]: Start accepts. Automaton has 97173 states and 148642 transitions. Word has length 129 [2022-11-20 12:07:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:11,770 INFO L495 AbstractCegarLoop]: Abstraction has 97173 states and 148642 transitions. [2022-11-20 12:07:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:07:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 97173 states and 148642 transitions. [2022-11-20 12:07:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:07:12,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:12,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:12,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:07:12,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash -318020336, now seen corresponding path program 1 times [2022-11-20 12:07:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:12,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209128169] [2022-11-20 12:07:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:07:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:07:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:07:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:07:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:07:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:07:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:07:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:07:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:07:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 12:07:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:07:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209128169] [2022-11-20 12:07:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209128169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337698083] [2022-11-20 12:07:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:12,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:12,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:12,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658c65e7-3095-42d1-83f1-68a61ef3422b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:07:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:07:12,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 12:07:13,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:07:13,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337698083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:13,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:13,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 12:07:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140733977] [2022-11-20 12:07:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:07:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:07:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:07:13,050 INFO L87 Difference]: Start difference. First operand 97173 states and 148642 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)