./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8 --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 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd --- 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-2329fc7 [2022-12-13 20:39:32,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:39:32,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:39:32,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:39:32,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:39:32,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:39:32,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:39:32,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:39:32,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:39:32,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:39:32,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:39:32,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:39:32,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:39:32,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:39:32,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:39:32,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:39:32,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:39:32,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:39:32,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:39:32,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:39:32,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:39:32,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:39:32,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:39:32,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:39:32,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:39:32,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:39:32,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:39:32,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:39:32,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:39:32,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:39:32,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:39:32,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:39:32,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:39:32,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:39:32,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:39:32,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:39:32,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:39:32,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:39:32,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:39:32,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:39:32,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:39:32,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:39:32,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:39:32,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:39:32,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:39:32,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:39:32,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:39:32,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:39:32,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:39:32,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:39:32,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:39:32,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:39:32,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:39:32,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:39:32,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:39:32,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:39:32,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:39:32,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:39:32,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:39:32,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:39:32,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:39:32,465 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:39:32,465 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd [2022-12-13 20:39:32,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:39:32,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:39:32,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:39:32,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:39:32,678 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:39:32,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2022-12-13 20:39:35,292 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:39:35,674 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:39:35,675 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2022-12-13 20:39:35,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/data/3c1b77ce6/e7f1f6a900c74843aaa1b961982b74e4/FLAG079162ac0 [2022-12-13 20:39:35,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/data/3c1b77ce6/e7f1f6a900c74843aaa1b961982b74e4 [2022-12-13 20:39:35,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:39:35,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:39:35,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:39:35,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:39:35,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:39:35,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:39:35" (1/1) ... [2022-12-13 20:39:35,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182e90d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:35, skipping insertion in model container [2022-12-13 20:39:35,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:39:35" (1/1) ... [2022-12-13 20:39:35,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:39:35,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:39:37,233 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_b5821b4c-d2a7-4303-a87d-2e499fbdf064/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2022-12-13 20:39:37,254 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_b5821b4c-d2a7-4303-a87d-2e499fbdf064/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2022-12-13 20:39:37,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:39:37,395 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:39:38,264 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_b5821b4c-d2a7-4303-a87d-2e499fbdf064/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2022-12-13 20:39:38,268 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_b5821b4c-d2a7-4303-a87d-2e499fbdf064/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2022-12-13 20:39:38,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:39:38,316 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:39:38,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38 WrapperNode [2022-12-13 20:39:38,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:39:38,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:39:38,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:39:38,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:39:38,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,613 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-12-13 20:39:38,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:39:38,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:39:38,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:39:38,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:39:38,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,825 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:39:38,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:39:38,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:39:38,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:39:38,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (1/1) ... [2022-12-13 20:39:38,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:39:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:39:38,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:39:38,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:39:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:39:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 20:39:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 20:39:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 20:39:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 20:39:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 20:39:38,964 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 20:39:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 20:39:38,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 20:39:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 20:39:38,964 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 20:39:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 20:39:38,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 20:39:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:39:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:39:38,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:39:39,044 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:39:39,046 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:39:44,702 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:39:44,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:39:44,721 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 20:39:44,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:39:44 BoogieIcfgContainer [2022-12-13 20:39:44,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:39:44,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:39:44,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:39:44,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:39:44,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:39:35" (1/3) ... [2022-12-13 20:39:44,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c46d911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:39:44, skipping insertion in model container [2022-12-13 20:39:44,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:39:38" (2/3) ... [2022-12-13 20:39:44,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c46d911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:39:44, skipping insertion in model container [2022-12-13 20:39:44,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:39:44" (3/3) ... [2022-12-13 20:39:44,730 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-2.c [2022-12-13 20:39:44,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:39:44,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:39:44,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:39:44,815 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;@2592c0bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:39:44,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:39:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 20:39:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:44,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:44,835 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] [2022-12-13 20:39:44,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-12-13 20:39:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:44,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146920745] [2022-12-13 20:39:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146920745] [2022-12-13 20:39:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146920745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:45,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:39:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179820016] [2022-12-13 20:39:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:45,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:39:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:39:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:39:45,229 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:46,189 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-12-13 20:39:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:39:46,191 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:46,222 INFO L225 Difference]: With dead ends: 4899 [2022-12-13 20:39:46,222 INFO L226 Difference]: Without dead ends: 2500 [2022-12-13 20:39:46,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:39:46,235 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4551 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:46,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16647 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:39:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-12-13 20:39:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-12-13 20:39:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-12-13 20:39:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-12-13 20:39:46,418 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-12-13 20:39:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:46,419 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-12-13 20:39:46,419 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-12-13 20:39:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:46,423 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:46,423 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] [2022-12-13 20:39:46,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:39:46,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-12-13 20:39:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977782616] [2022-12-13 20:39:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:46,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:46,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977782616] [2022-12-13 20:39:46,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977782616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:46,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:46,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990931733] [2022-12-13 20:39:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:46,614 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:47,639 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-12-13 20:39:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:39:47,640 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:47,652 INFO L225 Difference]: With dead ends: 2969 [2022-12-13 20:39:47,652 INFO L226 Difference]: Without dead ends: 2686 [2022-12-13 20:39:47,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:39:47,655 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4481 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:47,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4491 Valid, 20741 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:39:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-12-13 20:39:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-12-13 20:39:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-12-13 20:39:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-12-13 20:39:47,743 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-12-13 20:39:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:47,743 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-12-13 20:39:47,743 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-12-13 20:39:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:47,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:47,746 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] [2022-12-13 20:39:47,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:39:47,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-12-13 20:39:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:47,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526717694] [2022-12-13 20:39:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:47,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526717694] [2022-12-13 20:39:47,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526717694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:47,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:47,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082025593] [2022-12-13 20:39:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:47,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:47,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:47,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:47,881 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:48,835 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-12-13 20:39:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:39:48,836 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:48,845 INFO L225 Difference]: With dead ends: 3451 [2022-12-13 20:39:48,845 INFO L226 Difference]: Without dead ends: 3035 [2022-12-13 20:39:48,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:39:48,848 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4479 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:48,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20739 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:39:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-12-13 20:39:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-12-13 20:39:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-12-13 20:39:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-12-13 20:39:48,912 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-12-13 20:39:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:48,913 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-12-13 20:39:48,913 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-12-13 20:39:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:48,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:48,914 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] [2022-12-13 20:39:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:39:48,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-12-13 20:39:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:48,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136478615] [2022-12-13 20:39:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:49,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136478615] [2022-12-13 20:39:49,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136478615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:49,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:49,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:49,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350075906] [2022-12-13 20:39:49,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:49,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:49,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:49,021 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:49,906 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-12-13 20:39:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:39:49,907 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:49,921 INFO L225 Difference]: With dead ends: 4382 [2022-12-13 20:39:49,921 INFO L226 Difference]: Without dead ends: 3699 [2022-12-13 20:39:49,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:39:49,925 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4475 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:49,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 20739 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:39:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-12-13 20:39:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-12-13 20:39:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 20:39:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-12-13 20:39:50,076 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-12-13 20:39:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:50,076 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-12-13 20:39:50,076 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-12-13 20:39:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:50,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:50,078 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] [2022-12-13 20:39:50,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:39:50,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-12-13 20:39:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:50,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394850607] [2022-12-13 20:39:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:50,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:50,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394850607] [2022-12-13 20:39:50,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394850607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:50,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:50,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:50,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548517007] [2022-12-13 20:39:50,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:50,202 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:51,252 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-12-13 20:39:51,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:39:51,253 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:51,268 INFO L225 Difference]: With dead ends: 6651 [2022-12-13 20:39:51,268 INFO L226 Difference]: Without dead ends: 5433 [2022-12-13 20:39:51,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:39:51,273 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4606 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:51,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 20729 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:39:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-12-13 20:39:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-12-13 20:39:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-12-13 20:39:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-12-13 20:39:51,466 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-12-13 20:39:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-12-13 20:39:51,466 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-12-13 20:39:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:51,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:51,469 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] [2022-12-13 20:39:51,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:39:51,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-12-13 20:39:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:51,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8601676] [2022-12-13 20:39:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8601676] [2022-12-13 20:39:51,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8601676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:51,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:51,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:51,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966258997] [2022-12-13 20:39:51,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:51,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:51,582 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:52,765 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-12-13 20:39:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:39:52,765 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:52,804 INFO L225 Difference]: With dead ends: 10516 [2022-12-13 20:39:52,805 INFO L226 Difference]: Without dead ends: 8247 [2022-12-13 20:39:52,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:39:52,814 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4495 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 20725 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:52,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 20725 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:39:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-12-13 20:39:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-12-13 20:39:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-12-13 20:39:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-12-13 20:39:53,077 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-12-13 20:39:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:53,077 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-12-13 20:39:53,077 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-12-13 20:39:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:53,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:53,080 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] [2022-12-13 20:39:53,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:39:53,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-12-13 20:39:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:53,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467273860] [2022-12-13 20:39:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:53,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:53,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467273860] [2022-12-13 20:39:53,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467273860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:53,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:53,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:39:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481903944] [2022-12-13 20:39:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:39:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:39:53,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:39:53,181 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:54,445 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-12-13 20:39:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:39:54,445 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:54,491 INFO L225 Difference]: With dead ends: 17230 [2022-12-13 20:39:54,491 INFO L226 Difference]: Without dead ends: 12950 [2022-12-13 20:39:54,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:39:54,499 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4484 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:54,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20729 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:39:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-12-13 20:39:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-12-13 20:39:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-12-13 20:39:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-12-13 20:39:54,928 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-12-13 20:39:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:54,929 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-12-13 20:39:54,929 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-12-13 20:39:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:39:54,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:54,934 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] [2022-12-13 20:39:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:39:54,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-12-13 20:39:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:54,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280786141] [2022-12-13 20:39:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:39:55,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:55,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280786141] [2022-12-13 20:39:55,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280786141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:55,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:39:55,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:39:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637370293] [2022-12-13 20:39:55,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:55,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:39:55,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:55,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:39:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:39:55,007 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:56,528 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-12-13 20:39:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:39:56,528 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 20:39:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:56,562 INFO L225 Difference]: With dead ends: 25979 [2022-12-13 20:39:56,562 INFO L226 Difference]: Without dead ends: 17584 [2022-12-13 20:39:56,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:39:56,579 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4648 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:56,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 16542 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:39:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-12-13 20:39:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-12-13 20:39:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-12-13 20:39:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-12-13 20:39:57,247 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-12-13 20:39:57,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:57,247 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-12-13 20:39:57,247 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:39:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-12-13 20:39:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 20:39:57,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:57,266 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] [2022-12-13 20:39:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:39:57,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-12-13 20:39:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:57,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850708438] [2022-12-13 20:39:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:39:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:39:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:39:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:39:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:39:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:39:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:39:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:39:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:39:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850708438] [2022-12-13 20:39:57,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850708438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:39:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097935680] [2022-12-13 20:39:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:39:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:39:57,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:39:57,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:39:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:57,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:39:57,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:39:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:39:57,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:39:57,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097935680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:39:57,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:39:57,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 20:39:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048794006] [2022-12-13 20:39:57,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:39:57,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:39:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:39:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:39:57,547 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 20:39:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:58,880 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-12-13 20:39:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:39:58,880 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-12-13 20:39:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:58,940 INFO L225 Difference]: With dead ends: 39550 [2022-12-13 20:39:58,940 INFO L226 Difference]: Without dead ends: 26962 [2022-12-13 20:39:58,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:39:58,966 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 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 [2022-12-13 20:39:58,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:39:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-12-13 20:40:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-12-13 20:40:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-12-13 20:40:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-12-13 20:40:00,191 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-12-13 20:40:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:40:00,191 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-12-13 20:40:00,191 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 20:40:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-12-13 20:40:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 20:40:00,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:40:00,219 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] [2022-12-13 20:40:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:40:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:00,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:40:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-12-13 20:40:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411170805] [2022-12-13 20:40:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:00,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:40:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:40:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:40:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:40:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:40:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:40:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:40:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:40:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:00,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411170805] [2022-12-13 20:40:00,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411170805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:40:00,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225381491] [2022-12-13 20:40:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:00,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:00,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:40:00,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:40:00,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:40:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:00,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:40:00,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:40:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 20:40:00,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:40:00,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225381491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:00,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:40:00,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 20:40:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494762055] [2022-12-13 20:40:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:00,659 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 20:40:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:40:02,942 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-12-13 20:40:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:40:02,943 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-12-13 20:40:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:40:03,048 INFO L225 Difference]: With dead ends: 75333 [2022-12-13 20:40:03,048 INFO L226 Difference]: Without dead ends: 50702 [2022-12-13 20:40:03,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:03,086 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 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 [2022-12-13 20:40:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:40:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-12-13 20:40:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-12-13 20:40:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-12-13 20:40:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-12-13 20:40:06,122 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-12-13 20:40:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:40:06,123 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-12-13 20:40:06,123 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 20:40:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-12-13 20:40:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 20:40:06,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:40:06,172 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] [2022-12-13 20:40:06,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:40:06,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:40:06,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:40:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-12-13 20:40:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000351899] [2022-12-13 20:40:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:40:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:40:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:40:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:40:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:40:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:40:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:40:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:40:06,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:06,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000351899] [2022-12-13 20:40:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000351899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:40:06,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229785826] [2022-12-13 20:40:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:06,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:06,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:40:06,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:40:06,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:40:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:06,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:40:06,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:40:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:40:06,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:40:06,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229785826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:06,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:40:06,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:40:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648302994] [2022-12-13 20:40:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:06,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:06,643 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 20:40:11,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:40:11,828 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-12-13 20:40:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:40:11,829 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-12-13 20:40:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:40:12,096 INFO L225 Difference]: With dead ends: 144685 [2022-12-13 20:40:12,096 INFO L226 Difference]: Without dead ends: 96511 [2022-12-13 20:40:12,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:12,180 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 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 [2022-12-13 20:40:12,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:40:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-12-13 20:40:17,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-12-13 20:40:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-12-13 20:40:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-12-13 20:40:17,647 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-12-13 20:40:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:40:17,647 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-12-13 20:40:17,647 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 20:40:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-12-13 20:40:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 20:40:17,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:40:17,842 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] [2022-12-13 20:40:17,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:40:18,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:18,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:40:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-12-13 20:40:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:18,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054390857] [2022-12-13 20:40:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:40:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:40:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:40:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:40:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:40:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:40:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 20:40:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 20:40:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 20:40:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054390857] [2022-12-13 20:40:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054390857] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:40:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355117569] [2022-12-13 20:40:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:18,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:40:18,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:40:18,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:40:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:18,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:40:18,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:40:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:40:18,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:40:18,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355117569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:18,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:40:18,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 20:40:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057797490] [2022-12-13 20:40:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:18,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:18,425 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 20:40:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:40:27,633 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-12-13 20:40:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:40:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-12-13 20:40:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:40:28,175 INFO L225 Difference]: With dead ends: 280463 [2022-12-13 20:40:28,176 INFO L226 Difference]: Without dead ends: 186091 [2022-12-13 20:40:28,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:28,370 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 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 [2022-12-13 20:40:28,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:40:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states. [2022-12-13 20:40:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186091 to 184521. [2022-12-13 20:40:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184521 states, 159460 states have (on average 1.465803336259877) internal successors, (233737), 161263 states have internal predecessors, (233737), 14405 states have call successors, (14405), 9118 states have call predecessors, (14405), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-12-13 20:40:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184521 states to 184521 states and 280416 transitions. [2022-12-13 20:40:37,894 INFO L78 Accepts]: Start accepts. Automaton has 184521 states and 280416 transitions. Word has length 166 [2022-12-13 20:40:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:40:37,895 INFO L495 AbstractCegarLoop]: Abstraction has 184521 states and 280416 transitions. [2022-12-13 20:40:37,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 20:40:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 184521 states and 280416 transitions. [2022-12-13 20:40:38,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 20:40:38,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:40:38,268 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:40:38,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:40:38,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:38,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:40:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash 399987983, now seen corresponding path program 1 times [2022-12-13 20:40:38,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:38,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672395555] [2022-12-13 20:40:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:38,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:40:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:40:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:40:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:40:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:40:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 20:40:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 20:40:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 20:40:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 20:40:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 20:40:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672395555] [2022-12-13 20:40:38,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672395555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:40:38,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757418360] [2022-12-13 20:40:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:38,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:40:38,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:40:38,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:40:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:38,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:40:38,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:40:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:40:38,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:40:38,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757418360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:38,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:40:38,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:40:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509218372] [2022-12-13 20:40:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:38,828 INFO L87 Difference]: Start difference. First operand 184521 states and 280416 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:40:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:40:47,457 INFO L93 Difference]: Finished difference Result 279321 states and 424803 transitions. [2022-12-13 20:40:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:40:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-12-13 20:40:47,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:40:47,879 INFO L225 Difference]: With dead ends: 279321 [2022-12-13 20:40:47,879 INFO L226 Difference]: Without dead ends: 155053 [2022-12-13 20:40:48,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:48,095 INFO L413 NwaCegarLoop]: 4178 mSDtfsCounter, 4108 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:40:48,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4222 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:40:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155053 states. [2022-12-13 20:40:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155053 to 109701. [2022-12-13 20:40:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109701 states, 95360 states have (on average 1.4197671979865771) internal successors, (135389), 96271 states have internal predecessors, (135389), 8073 states have call successors, (8073), 5498 states have call predecessors, (8073), 6266 states have return successors, (14714), 7995 states have call predecessors, (14714), 8073 states have call successors, (14714) [2022-12-13 20:40:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109701 states to 109701 states and 158176 transitions. [2022-12-13 20:40:55,424 INFO L78 Accepts]: Start accepts. Automaton has 109701 states and 158176 transitions. Word has length 184 [2022-12-13 20:40:55,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:40:55,425 INFO L495 AbstractCegarLoop]: Abstraction has 109701 states and 158176 transitions. [2022-12-13 20:40:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:40:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 109701 states and 158176 transitions. [2022-12-13 20:40:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 20:40:55,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:40:55,598 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:40:55,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:40:55,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 20:40:55,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:40:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1248051052, now seen corresponding path program 1 times [2022-12-13 20:40:55,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:55,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453666764] [2022-12-13 20:40:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:40:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:40:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:40:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:40:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:40:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 20:40:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 20:40:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 20:40:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:40:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 20:40:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 20:40:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:55,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453666764] [2022-12-13 20:40:55,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453666764] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:40:55,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187283208] [2022-12-13 20:40:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:40:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:40:55,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:40:55,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:40:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:56,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:40:56,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:40:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 20:40:56,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:40:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187283208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:56,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:40:56,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:40:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96124281] [2022-12-13 20:40:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:56,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:40:56,105 INFO L87 Difference]: Start difference. First operand 109701 states and 158176 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:41:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:41:04,662 INFO L93 Difference]: Finished difference Result 190308 states and 272441 transitions. [2022-12-13 20:41:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:41:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 184 [2022-12-13 20:41:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:41:04,968 INFO L225 Difference]: With dead ends: 190308 [2022-12-13 20:41:04,968 INFO L226 Difference]: Without dead ends: 117191 [2022-12-13 20:41:05,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:41:05,086 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4120 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:41:05,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4120 Valid, 4408 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:41:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117191 states. [2022-12-13 20:41:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117191 to 116847. [2022-12-13 20:41:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116847 states, 101870 states have (on average 1.393452439383528) internal successors, (141951), 102781 states have internal predecessors, (141951), 8251 states have call successors, (8251), 5956 states have call predecessors, (8251), 6724 states have return successors, (15350), 8173 states have call predecessors, (15350), 8251 states have call successors, (15350) [2022-12-13 20:41:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116847 states to 116847 states and 165552 transitions. [2022-12-13 20:41:13,349 INFO L78 Accepts]: Start accepts. Automaton has 116847 states and 165552 transitions. Word has length 184 [2022-12-13 20:41:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:41:13,350 INFO L495 AbstractCegarLoop]: Abstraction has 116847 states and 165552 transitions. [2022-12-13 20:41:13,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:41:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 116847 states and 165552 transitions. [2022-12-13 20:41:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:41:13,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:41:13,540 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:41:13,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:41:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 20:41:13,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:41:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:41:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2008494395, now seen corresponding path program 1 times [2022-12-13 20:41:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:41:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995607303] [2022-12-13 20:41:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:41:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:41:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:41:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:41:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:41:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:41:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:41:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:41:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:41:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:41:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 20:41:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:41:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:41:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 20:41:13,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:41:13,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995607303] [2022-12-13 20:41:13,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995607303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:41:13,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163369915] [2022-12-13 20:41:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:41:13,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:41:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:41:13,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:41:13,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:41:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:41:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:41:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 20:41:13,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:41:13,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163369915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:41:13,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:41:13,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:41:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068344218] [2022-12-13 20:41:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:41:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:41:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:41:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:41:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:41:13,987 INFO L87 Difference]: Start difference. First operand 116847 states and 165552 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:41:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:41:28,579 INFO L93 Difference]: Finished difference Result 340679 states and 485500 transitions. [2022-12-13 20:41:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:41:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 20:41:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:41:29,300 INFO L225 Difference]: With dead ends: 340679 [2022-12-13 20:41:29,300 INFO L226 Difference]: Without dead ends: 225973 [2022-12-13 20:41:29,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:41:29,478 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 191 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 8556 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 [2022-12-13 20:41:29,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 8556 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:41:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225973 states. [2022-12-13 20:41:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225973 to 225767. [2022-12-13 20:41:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225767 states, 196824 states have (on average 1.3813406901597367) internal successors, (271881), 198645 states have internal predecessors, (271881), 15793 states have call successors, (15793), 11612 states have call predecessors, (15793), 13148 states have return successors, (33676), 15637 states have call predecessors, (33676), 15793 states have call successors, (33676) [2022-12-13 20:41:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225767 states to 225767 states and 321350 transitions. [2022-12-13 20:41:46,487 INFO L78 Accepts]: Start accepts. Automaton has 225767 states and 321350 transitions. Word has length 185 [2022-12-13 20:41:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:41:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 225767 states and 321350 transitions. [2022-12-13 20:41:46,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:41:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 225767 states and 321350 transitions. [2022-12-13 20:41:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:41:46,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:41:46,903 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:41:46,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:41:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 20:41:47,104 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:41:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:41:47,106 INFO L85 PathProgramCache]: Analyzing trace with hash 816176701, now seen corresponding path program 1 times [2022-12-13 20:41:47,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:41:47,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218674175] [2022-12-13 20:41:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:41:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:41:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:41:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:41:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:41:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:41:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:41:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:41:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:41:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:41:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 20:41:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:41:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:41:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 20:41:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:41:47,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218674175] [2022-12-13 20:41:47,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218674175] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:41:47,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874384506] [2022-12-13 20:41:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:41:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:41:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:41:47,251 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:41:47,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:41:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:41:47,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:41:47,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:41:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 20:41:47,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:41:47,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874384506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:41:47,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:41:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:41:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186699012] [2022-12-13 20:41:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:41:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:41:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:41:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:41:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:41:47,421 INFO L87 Difference]: Start difference. First operand 225767 states and 321350 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:42:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:01,563 INFO L93 Difference]: Finished difference Result 369281 states and 531477 transitions. [2022-12-13 20:42:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:42:01,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 20:42:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:02,075 INFO L225 Difference]: With dead ends: 369281 [2022-12-13 20:42:02,076 INFO L226 Difference]: Without dead ends: 190739 [2022-12-13 20:42:02,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:42:02,361 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4104 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:02,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4218 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190739 states. [2022-12-13 20:42:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190739 to 135487. [2022-12-13 20:42:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135487 states, 118716 states have (on average 1.3443933420937364) internal successors, (159601), 119645 states have internal predecessors, (159601), 9029 states have call successors, (9029), 6972 states have call predecessors, (9029), 7740 states have return successors, (17046), 8933 states have call predecessors, (17046), 9029 states have call successors, (17046) [2022-12-13 20:42:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135487 states to 135487 states and 185676 transitions. [2022-12-13 20:42:14,673 INFO L78 Accepts]: Start accepts. Automaton has 135487 states and 185676 transitions. Word has length 185 [2022-12-13 20:42:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:14,673 INFO L495 AbstractCegarLoop]: Abstraction has 135487 states and 185676 transitions. [2022-12-13 20:42:14,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:42:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 135487 states and 185676 transitions. [2022-12-13 20:42:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:42:14,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:14,873 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:42:14,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:42:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:42:15,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 78079386, now seen corresponding path program 1 times [2022-12-13 20:42:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:15,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700301402] [2022-12-13 20:42:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:42:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:42:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:42:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:42:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:42:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:42:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:42:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:42:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 20:42:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:42:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:42:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 20:42:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:15,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700301402] [2022-12-13 20:42:15,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700301402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:42:15,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513429281] [2022-12-13 20:42:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:15,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:15,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:15,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:42:15,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:42:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:42:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:42:15,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:15,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513429281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:15,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:42:15,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:42:15,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604282379] [2022-12-13 20:42:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:15,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:42:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:42:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:42:15,335 INFO L87 Difference]: Start difference. First operand 135487 states and 185676 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:42:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:35,523 INFO L93 Difference]: Finished difference Result 383435 states and 531276 transitions. [2022-12-13 20:42:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:42:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 20:42:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:36,269 INFO L225 Difference]: With dead ends: 383435 [2022-12-13 20:42:36,269 INFO L226 Difference]: Without dead ends: 250101 [2022-12-13 20:42:36,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:42:36,511 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 176 mSDsluCounter, 4174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 8544 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 [2022-12-13 20:42:36,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 8544 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250101 states. [2022-12-13 20:42:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250101 to 250099. [2022-12-13 20:42:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250099 states, 218288 states have (on average 1.3349382467199296) internal successors, (291401), 220145 states have internal predecessors, (291401), 17193 states have call successors, (17193), 13080 states have call predecessors, (17193), 14616 states have return successors, (38444), 17001 states have call predecessors, (38444), 17193 states have call successors, (38444) [2022-12-13 20:42:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250099 states to 250099 states and 347038 transitions. [2022-12-13 20:42:58,612 INFO L78 Accepts]: Start accepts. Automaton has 250099 states and 347038 transitions. Word has length 185 [2022-12-13 20:42:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:58,613 INFO L495 AbstractCegarLoop]: Abstraction has 250099 states and 347038 transitions. [2022-12-13 20:42:58,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:42:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 250099 states and 347038 transitions. [2022-12-13 20:42:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:42:58,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:58,960 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:42:58,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:42:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 20:42:59,162 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1176543660, now seen corresponding path program 1 times [2022-12-13 20:42:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110202315] [2022-12-13 20:42:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:42:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:42:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:42:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:42:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:42:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:42:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:42:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:42:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 20:42:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:42:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:42:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 20:42:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110202315] [2022-12-13 20:42:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110202315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:42:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58746919] [2022-12-13 20:42:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:59,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:42:59,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:42:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:42:59,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:42:59,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:59,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58746919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:59,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:42:59,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:42:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044911167] [2022-12-13 20:42:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:42:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:42:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:42:59,375 INFO L87 Difference]: Start difference. First operand 250099 states and 347038 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:43:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:35,695 INFO L93 Difference]: Finished difference Result 708523 states and 997486 transitions. [2022-12-13 20:43:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:43:35,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 20:43:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:37,202 INFO L225 Difference]: With dead ends: 708523 [2022-12-13 20:43:37,202 INFO L226 Difference]: Without dead ends: 460593 [2022-12-13 20:43:37,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:43:37,732 INFO L413 NwaCegarLoop]: 4372 mSDtfsCounter, 178 mSDsluCounter, 4174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 8546 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 [2022-12-13 20:43:37,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 8546 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:43:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460593 states. [2022-12-13 20:44:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460593 to 460591. [2022-12-13 20:44:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460591 states, 400428 states have (on average 1.3251645739059206) internal successors, (530633), 404141 states have internal predecessors, (530633), 32657 states have call successors, (32657), 24432 states have call predecessors, (32657), 27504 states have return successors, (86058), 32273 states have call predecessors, (86058), 32657 states have call successors, (86058) [2022-12-13 20:44:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460591 states to 460591 states and 649348 transitions. [2022-12-13 20:44:18,174 INFO L78 Accepts]: Start accepts. Automaton has 460591 states and 649348 transitions. Word has length 185 [2022-12-13 20:44:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:18,174 INFO L495 AbstractCegarLoop]: Abstraction has 460591 states and 649348 transitions. [2022-12-13 20:44:18,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:44:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 460591 states and 649348 transitions. [2022-12-13 20:44:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:44:18,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:18,874 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:44:18,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 20:44:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:44:19,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 675112091, now seen corresponding path program 1 times [2022-12-13 20:44:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:19,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270051135] [2022-12-13 20:44:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:44:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:44:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:44:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:44:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 20:44:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 20:44:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:44:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 20:44:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:44:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:44:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 20:44:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:19,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270051135] [2022-12-13 20:44:19,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270051135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:44:19,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337867139] [2022-12-13 20:44:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:44:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:44:19,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:44:19,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:44:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:19,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:44:19,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:44:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 20:44:19,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:44:19,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337867139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:19,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:44:19,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:44:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146753360] [2022-12-13 20:44:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:44:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:44:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:44:19,309 INFO L87 Difference]: Start difference. First operand 460591 states and 649348 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:44:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:58,506 INFO L93 Difference]: Finished difference Result 823187 states and 1161230 transitions. [2022-12-13 20:44:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:44:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-12-13 20:44:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:00,082 INFO L225 Difference]: With dead ends: 823187 [2022-12-13 20:45:00,082 INFO L226 Difference]: Without dead ends: 471361 [2022-12-13 20:45:00,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:45:00,685 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4129 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4129 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4129 Valid, 4419 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471361 states. [2022-12-13 20:45:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471361 to 459711. [2022-12-13 20:45:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459711 states, 399548 states have (on average 1.3181720343988708) internal successors, (526673), 403261 states have internal predecessors, (526673), 32657 states have call successors, (32657), 24432 states have call predecessors, (32657), 27504 states have return successors, (86058), 32273 states have call predecessors, (86058), 32657 states have call successors, (86058) [2022-12-13 20:45:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459711 states to 459711 states and 645388 transitions. [2022-12-13 20:45:42,084 INFO L78 Accepts]: Start accepts. Automaton has 459711 states and 645388 transitions. Word has length 185 [2022-12-13 20:45:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:42,084 INFO L495 AbstractCegarLoop]: Abstraction has 459711 states and 645388 transitions. [2022-12-13 20:45:42,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:45:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 459711 states and 645388 transitions. [2022-12-13 20:45:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:45:42,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:42,855 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:45:42,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:45:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:43,056 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -824437031, now seen corresponding path program 1 times [2022-12-13 20:45:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611200511] [2022-12-13 20:45:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:45:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:45:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:45:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:45:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:45:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 20:45:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 20:45:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:45:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 20:45:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:45:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:45:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 20:45:43,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:43,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611200511] [2022-12-13 20:45:43,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611200511] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:45:43,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777744612] [2022-12-13 20:45:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:43,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:43,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:43,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:45:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:45:43,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:45:43,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:43,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777744612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:43,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:45:43,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:45:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493094303] [2022-12-13 20:45:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:45:43,334 INFO L87 Difference]: Start difference. First operand 459711 states and 645388 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:46:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:46:39,316 INFO L93 Difference]: Finished difference Result 1072657 states and 1577046 transitions. [2022-12-13 20:46:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:46:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 20:46:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:46:41,547 INFO L225 Difference]: With dead ends: 1072657 [2022-12-13 20:46:41,547 INFO L226 Difference]: Without dead ends: 615151 [2022-12-13 20:46:42,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:46:42,614 INFO L413 NwaCegarLoop]: 4185 mSDtfsCounter, 4128 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:46:42,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 4248 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:46:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615151 states. [2022-12-13 20:47:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615151 to 613839. [2022-12-13 20:47:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613839 states, 539412 states have (on average 1.3131502450816814) internal successors, (708329), 543125 states have internal predecessors, (708329), 39729 states have call successors, (39729), 31472 states have call predecessors, (39729), 34696 states have return successors, (135265), 39497 states have call predecessors, (135265), 39729 states have call successors, (135265) [2022-12-13 20:47:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613839 states to 613839 states and 883323 transitions. [2022-12-13 20:47:42,359 INFO L78 Accepts]: Start accepts. Automaton has 613839 states and 883323 transitions. Word has length 185 [2022-12-13 20:47:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:42,359 INFO L495 AbstractCegarLoop]: Abstraction has 613839 states and 883323 transitions. [2022-12-13 20:47:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 20:47:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 613839 states and 883323 transitions. [2022-12-13 20:47:43,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:47:43,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:43,393 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:47:43,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 20:47:43,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:47:43,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1935967205, now seen corresponding path program 1 times [2022-12-13 20:47:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:43,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589697767] [2022-12-13 20:47:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:47:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:47:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:47:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:47:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 20:47:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 20:47:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:47:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 20:47:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:47:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:47:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 20:47:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:43,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589697767] [2022-12-13 20:47:43,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589697767] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:47:43,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392898741] [2022-12-13 20:47:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:47:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:47:43,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:47:43,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:47:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:43,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:47:43,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:47:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 20:47:43,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:47:43,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392898741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:43,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:47:43,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 20:47:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689603285] [2022-12-13 20:47:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:47:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:47:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:47:43,859 INFO L87 Difference]: Start difference. First operand 613839 states and 883323 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:48:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:47,546 INFO L93 Difference]: Finished difference Result 1110883 states and 1597043 transitions. [2022-12-13 20:48:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:48:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-12-13 20:48:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:49,795 INFO L225 Difference]: With dead ends: 1110883 [2022-12-13 20:48:49,795 INFO L226 Difference]: Without dead ends: 647553 [2022-12-13 20:48:50,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:48:50,783 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4126 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 4431 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:50,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4126 Valid, 4431 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:48:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647553 states. [2022-12-13 20:49:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647553 to 637455. [2022-12-13 20:49:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637455 states, 562148 states have (on average 1.3076502984979044) internal successors, (735093), 565861 states have internal predecessors, (735093), 39729 states have call successors, (39729), 32352 states have call predecessors, (39729), 35576 states have return successors, (138235), 39497 states have call predecessors, (138235), 39729 states have call successors, (138235) [2022-12-13 20:49:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637455 states to 637455 states and 913057 transitions. [2022-12-13 20:49:58,168 INFO L78 Accepts]: Start accepts. Automaton has 637455 states and 913057 transitions. Word has length 185 [2022-12-13 20:49:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:49:58,168 INFO L495 AbstractCegarLoop]: Abstraction has 637455 states and 913057 transitions. [2022-12-13 20:49:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 20:49:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 637455 states and 913057 transitions. [2022-12-13 20:49:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:49:59,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:49:59,214 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 20:49:59,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 20:49:59,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5821b4c-d2a7-4303-a87d-2e499fbdf064/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 20:49:59,416 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:49:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:49:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 903341151, now seen corresponding path program 1 times [2022-12-13 20:49:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:49:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642542174] [2022-12-13 20:49:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:49:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:49:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:49:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:49:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:49:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:49:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:49:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 20:49:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 20:49:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:49:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 20:49:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 20:49:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:49:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-13 20:49:59,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:49:59,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642542174] [2022-12-13 20:49:59,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642542174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:49:59,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:49:59,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:49:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517040476] [2022-12-13 20:49:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:49:59,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:49:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:49:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:49:59,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:49:59,482 INFO L87 Difference]: Start difference. First operand 637455 states and 913057 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)