./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:27:30,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:27:30,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:27:30,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:27:30,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:27:30,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:27:30,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:27:30,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:27:30,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:27:30,436 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:27:30,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:27:30,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:27:30,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:27:30,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:27:30,439 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:27:30,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:27:30,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:27:30,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:27:30,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:27:30,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:27:30,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:27:30,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:27:30,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:27:30,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:27:30,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:27:30,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:27:30,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:27:30,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:27:30,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:27:30,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:27:30,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:27:30,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:27:30,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:27:30,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:27:30,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:27:30,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:27:30,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:27:30,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:27:30,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:27:30,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:27:30,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:27:30,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:27:30,469 INFO L153 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_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 [2024-11-08 16:27:30,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:27:30,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:27:30,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:27:30,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:27:30,853 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:27:30,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c Unable to find full path for "g++" [2024-11-08 16:27:32,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:27:33,090 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:27:33,091 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-11-08 16:27:33,100 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/data/3691873a3/192d7c5ec79d4f2d99c5beaa98beb5e2/FLAG38042712a [2024-11-08 16:27:33,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/data/3691873a3/192d7c5ec79d4f2d99c5beaa98beb5e2 [2024-11-08 16:27:33,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:27:33,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:27:33,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:27:33,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:27:33,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:27:33,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738f9bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33, skipping insertion in model container [2024-11-08 16:27:33,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:27:33,723 WARN L250 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_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-11-08 16:27:33,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:27:33,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:27:33,778 WARN L250 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_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-11-08 16:27:33,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:27:33,808 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:27:33,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33 WrapperNode [2024-11-08 16:27:33,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:27:33,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:27:33,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:27:33,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:27:33,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,848 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-08 16:27:33,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:27:33,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:27:33,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:27:33,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:27:33,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,885 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 3, 7]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 1, 3]. [2024-11-08 16:27:33,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:27:33,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:27:33,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:27:33,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:27:33,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (1/1) ... [2024-11-08 16:27:33,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:27:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:33,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:27:33,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:27:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:27:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:27:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:27:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:27:34,071 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:27:34,073 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:27:34,312 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-08 16:27:34,313 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:27:34,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:27:34,326 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:27:34,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:27:34 BoogieIcfgContainer [2024-11-08 16:27:34,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:27:34,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:27:34,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:27:34,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:27:34,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:27:33" (1/3) ... [2024-11-08 16:27:34,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0571ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:27:34, skipping insertion in model container [2024-11-08 16:27:34,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:33" (2/3) ... [2024-11-08 16:27:34,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0571ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:27:34, skipping insertion in model container [2024-11-08 16:27:34,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:27:34" (3/3) ... [2024-11-08 16:27:34,338 INFO L112 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2024-11-08 16:27:34,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:27:34,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:27:34,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:27:34,448 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@535cdec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:27:34,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:27:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.59375) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:27:34,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:34,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:34,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:34,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash -256959857, now seen corresponding path program 1 times [2024-11-08 16:27:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889830333] [2024-11-08 16:27:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:34,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889830333] [2024-11-08 16:27:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889830333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:34,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:34,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:27:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748498047] [2024-11-08 16:27:34,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:34,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:27:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:27:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:34,912 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.59375) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:35,081 INFO L93 Difference]: Finished difference Result 76 states and 116 transitions. [2024-11-08 16:27:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:27:35,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 16:27:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:35,097 INFO L225 Difference]: With dead ends: 76 [2024-11-08 16:27:35,097 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 16:27:35,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:35,104 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:35,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 47 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:27:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 16:27:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-11-08 16:27:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-11-08 16:27:35,161 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 13 [2024-11-08 16:27:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:35,162 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-11-08 16:27:35,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-11-08 16:27:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 16:27:35,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:35,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:35,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:27:35,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:35,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1871726230, now seen corresponding path program 1 times [2024-11-08 16:27:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977360685] [2024-11-08 16:27:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:27:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977360685] [2024-11-08 16:27:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977360685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:35,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:27:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146328354] [2024-11-08 16:27:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:35,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:27:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:27:35,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:35,330 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:35,427 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2024-11-08 16:27:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:27:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 16:27:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:35,430 INFO L225 Difference]: With dead ends: 57 [2024-11-08 16:27:35,430 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 16:27:35,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:35,432 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:35,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 44 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:27:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 16:27:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-08 16:27:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2024-11-08 16:27:35,448 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 15 [2024-11-08 16:27:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:35,449 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2024-11-08 16:27:35,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2024-11-08 16:27:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 16:27:35,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:35,451 INFO L215 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] [2024-11-08 16:27:35,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:27:35,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:35,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1573322537, now seen corresponding path program 1 times [2024-11-08 16:27:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468184838] [2024-11-08 16:27:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:27:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468184838] [2024-11-08 16:27:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468184838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:27:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175283277] [2024-11-08 16:27:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:27:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:27:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:35,683 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:35,711 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2024-11-08 16:27:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:27:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-08 16:27:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:35,713 INFO L225 Difference]: With dead ends: 61 [2024-11-08 16:27:35,713 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 16:27:35,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:27:35,715 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:35,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 16:27:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-08 16:27:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2024-11-08 16:27:35,723 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 22 [2024-11-08 16:27:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:35,723 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2024-11-08 16:27:35,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-11-08 16:27:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 16:27:35,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:35,725 INFO L215 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] [2024-11-08 16:27:35,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:27:35,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:35,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 341743004, now seen corresponding path program 1 times [2024-11-08 16:27:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586338459] [2024-11-08 16:27:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:27:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586338459] [2024-11-08 16:27:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586338459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:35,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:35,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:27:35,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122612997] [2024-11-08 16:27:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:35,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:35,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:27:35,823 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:35,847 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-08 16:27:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 16:27:35,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:35,849 INFO L225 Difference]: With dead ends: 49 [2024-11-08 16:27:35,849 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 16:27:35,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:27:35,851 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:35,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 52 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 16:27:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 16:27:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-08 16:27:35,859 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 23 [2024-11-08 16:27:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:35,859 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-08 16:27:35,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-08 16:27:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 16:27:35,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:35,861 INFO L215 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] [2024-11-08 16:27:35,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:27:35,861 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:35,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1304521237, now seen corresponding path program 1 times [2024-11-08 16:27:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211847030] [2024-11-08 16:27:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:27:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211847030] [2024-11-08 16:27:36,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211847030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101513212] [2024-11-08 16:27:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:36,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:36,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:27:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:36,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:27:36,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:27:36,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:27:36,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101513212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:36,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:36,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:27:36,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614325330] [2024-11-08 16:27:36,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:36,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:27:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:27:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:27:36,307 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:36,623 INFO L93 Difference]: Finished difference Result 126 states and 168 transitions. [2024-11-08 16:27:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:27:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-08 16:27:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:36,625 INFO L225 Difference]: With dead ends: 126 [2024-11-08 16:27:36,625 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 16:27:36,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:27:36,626 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 140 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:36,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 81 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:27:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 16:27:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2024-11-08 16:27:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-11-08 16:27:36,648 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 28 [2024-11-08 16:27:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:36,648 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-11-08 16:27:36,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-11-08 16:27:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:27:36,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:36,650 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-08 16:27:36,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:27:36,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:36,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:36,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1982887251, now seen corresponding path program 2 times [2024-11-08 16:27:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:36,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623251411] [2024-11-08 16:27:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:36,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 16:27:36,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623251411] [2024-11-08 16:27:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623251411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:27:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914091526] [2024-11-08 16:27:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:36,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:27:36,951 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:36,975 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-11-08 16:27:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 16:27:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:36,977 INFO L225 Difference]: With dead ends: 70 [2024-11-08 16:27:36,977 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 16:27:36,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:27:36,978 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:36,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 16:27:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 16:27:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-08 16:27:36,997 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 38 [2024-11-08 16:27:36,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:36,998 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-08 16:27:36,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-08 16:27:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:27:36,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:36,999 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-08 16:27:36,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:27:37,004 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:37,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1300962795, now seen corresponding path program 1 times [2024-11-08 16:27:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236676528] [2024-11-08 16:27:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236676528] [2024-11-08 16:27:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236676528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856407226] [2024-11-08 16:27:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:37,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:37,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:37,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:37,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:27:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:27:37,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:37,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:37,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856407226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:37,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:37,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-08 16:27:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132320314] [2024-11-08 16:27:37,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:37,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:27:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:27:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:27:37,618 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:37,999 INFO L93 Difference]: Finished difference Result 209 states and 243 transitions. [2024-11-08 16:27:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:27:38,000 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 16:27:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:38,001 INFO L225 Difference]: With dead ends: 209 [2024-11-08 16:27:38,001 INFO L226 Difference]: Without dead ends: 166 [2024-11-08 16:27:38,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-08 16:27:38,002 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 355 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:38,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 97 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:27:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-08 16:27:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 66. [2024-11-08 16:27:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-08 16:27:38,015 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 38 [2024-11-08 16:27:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:38,016 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-08 16:27:38,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-08 16:27:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 16:27:38,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:38,017 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 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] [2024-11-08 16:27:38,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:27:38,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:27:38,222 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:38,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1963804745, now seen corresponding path program 2 times [2024-11-08 16:27:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065310162] [2024-11-08 16:27:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065310162] [2024-11-08 16:27:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065310162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035398440] [2024-11-08 16:27:38,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:27:38,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:38,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:38,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:27:38,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:27:38,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:27:38,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:27:38,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:39,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035398440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:39,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:39,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-08 16:27:39,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147343519] [2024-11-08 16:27:39,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:39,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 16:27:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 16:27:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 16:27:39,455 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:40,491 INFO L93 Difference]: Finished difference Result 377 states and 429 transitions. [2024-11-08 16:27:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:27:40,495 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-08 16:27:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:40,500 INFO L225 Difference]: With dead ends: 377 [2024-11-08 16:27:40,500 INFO L226 Difference]: Without dead ends: 334 [2024-11-08 16:27:40,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 16:27:40,503 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1032 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:40,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 148 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-08 16:27:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 90. [2024-11-08 16:27:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2024-11-08 16:27:40,538 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 50 [2024-11-08 16:27:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:40,539 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2024-11-08 16:27:40,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2024-11-08 16:27:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 16:27:40,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:40,544 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 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] [2024-11-08 16:27:40,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:27:40,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:40,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:40,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash 882722309, now seen corresponding path program 3 times [2024-11-08 16:27:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852799753] [2024-11-08 16:27:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:27:41,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852799753] [2024-11-08 16:27:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852799753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021880829] [2024-11-08 16:27:41,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:27:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:41,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:41,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:41,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:27:42,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:27:42,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:27:42,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:27:42,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-08 16:27:42,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-08 16:27:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021880829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:42,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 4, 4] total 30 [2024-11-08 16:27:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136906017] [2024-11-08 16:27:42,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:42,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:27:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:27:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:27:42,522 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:43,775 INFO L93 Difference]: Finished difference Result 441 states and 500 transitions. [2024-11-08 16:27:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 16:27:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-08 16:27:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:43,779 INFO L225 Difference]: With dead ends: 441 [2024-11-08 16:27:43,779 INFO L226 Difference]: Without dead ends: 398 [2024-11-08 16:27:43,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=935, Invalid=2035, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:27:43,783 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 883 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:43,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 188 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-08 16:27:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 127. [2024-11-08 16:27:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 126 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-08 16:27:43,809 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 74 [2024-11-08 16:27:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:43,809 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-08 16:27:43,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-08 16:27:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 16:27:43,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:43,811 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:27:44,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:44,016 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:44,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash 472013620, now seen corresponding path program 4 times [2024-11-08 16:27:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952813584] [2024-11-08 16:27:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-08 16:27:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952813584] [2024-11-08 16:27:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952813584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898446399] [2024-11-08 16:27:45,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:27:45,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:45,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:45,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:27:45,393 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:27:45,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:27:45,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 16:27:45,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-08 16:27:45,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:45,664 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 16:27:45,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 16:27:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-08 16:27:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898446399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:45,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:45,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 7, 7] total 33 [2024-11-08 16:27:45,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865718890] [2024-11-08 16:27:45,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:45,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 16:27:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 16:27:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=712, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:27:45,676 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:47,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:47,904 INFO L93 Difference]: Finished difference Result 641 states and 708 transitions. [2024-11-08 16:27:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-08 16:27:47,905 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 16:27:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:47,907 INFO L225 Difference]: With dead ends: 641 [2024-11-08 16:27:47,908 INFO L226 Difference]: Without dead ends: 563 [2024-11-08 16:27:47,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2099, Invalid=4707, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:27:47,911 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1585 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:47,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 241 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:27:47,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-08 16:27:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 134. [2024-11-08 16:27:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.1729323308270676) internal successors, (156), 133 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2024-11-08 16:27:47,934 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 100 [2024-11-08 16:27:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:47,935 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2024-11-08 16:27:47,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2024-11-08 16:27:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 16:27:47,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:47,937 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:47,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:27:48,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:27:48,141 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:48,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1569821215, now seen corresponding path program 1 times [2024-11-08 16:27:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122061746] [2024-11-08 16:27:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:27:49,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122061746] [2024-11-08 16:27:49,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122061746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971142744] [2024-11-08 16:27:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:49,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:49,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:49,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:49,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:27:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:49,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 16:27:49,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:27:50,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:27:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971142744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:51,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:51,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 78 [2024-11-08 16:27:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690500359] [2024-11-08 16:27:51,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:51,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 16:27:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 16:27:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=3455, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 16:27:51,567 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand has 79 states, 79 states have (on average 2.240506329113924) internal successors, (177), 78 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:54,262 INFO L93 Difference]: Finished difference Result 848 states and 965 transitions. [2024-11-08 16:27:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 16:27:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.240506329113924) internal successors, (177), 78 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 16:27:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:54,266 INFO L225 Difference]: With dead ends: 848 [2024-11-08 16:27:54,266 INFO L226 Difference]: Without dead ends: 765 [2024-11-08 16:27:54,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4082, Invalid=6630, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 16:27:54,270 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1732 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:54,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 364 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:27:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-08 16:27:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 186. [2024-11-08 16:27:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2024-11-08 16:27:54,295 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 104 [2024-11-08 16:27:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:54,296 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2024-11-08 16:27:54,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.240506329113924) internal successors, (177), 78 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:27:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2024-11-08 16:27:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-08 16:27:54,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:54,298 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:54,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:27:54,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:27:54,498 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:54,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1699922595, now seen corresponding path program 2 times [2024-11-08 16:27:54,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451463866] [2024-11-08 16:27:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:27:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451463866] [2024-11-08 16:27:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451463866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550851267] [2024-11-08 16:27:58,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:27:58,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:58,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:58,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:27:58,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:27:58,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:27:58,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 16:27:58,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:28:00,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:28:04,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550851267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:04,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 156 [2024-11-08 16:28:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670122281] [2024-11-08 16:28:04,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:04,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2024-11-08 16:28:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2024-11-08 16:28:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10819, Invalid=13673, Unknown=0, NotChecked=0, Total=24492 [2024-11-08 16:28:04,207 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 157 states, 157 states have (on average 2.121019108280255) internal successors, (333), 156 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:16,897 INFO L93 Difference]: Finished difference Result 1576 states and 1771 transitions. [2024-11-08 16:28:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-08 16:28:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 2.121019108280255) internal successors, (333), 156 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-08 16:28:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:16,904 INFO L225 Difference]: With dead ends: 1576 [2024-11-08 16:28:16,904 INFO L226 Difference]: Without dead ends: 1493 [2024-11-08 16:28:16,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15705 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=16276, Invalid=26780, Unknown=0, NotChecked=0, Total=43056 [2024-11-08 16:28:16,911 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4989 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4989 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:16,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4989 Valid, 579 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 16:28:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2024-11-08 16:28:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 290. [2024-11-08 16:28:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0795847750865053) internal successors, (312), 289 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 312 transitions. [2024-11-08 16:28:16,975 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 312 transitions. Word has length 156 [2024-11-08 16:28:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:16,975 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 312 transitions. [2024-11-08 16:28:16,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 2.121019108280255) internal successors, (333), 156 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 312 transitions. [2024-11-08 16:28:16,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-08 16:28:16,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:16,980 INFO L215 NwaCegarLoop]: trace histogram [102, 102, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:16,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:28:17,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:28:17,181 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:17,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1541835481, now seen corresponding path program 3 times [2024-11-08 16:28:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29155575] [2024-11-08 16:28:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10466 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 16:28:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:28:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29155575] [2024-11-08 16:28:27,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29155575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:28:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981918087] [2024-11-08 16:28:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:28:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:28:27,983 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:28:27,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:28:28,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:28:28,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:28:28,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:28:28,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10466 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10456 trivial. 0 not checked. [2024-11-08 16:28:28,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10466 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10456 trivial. 0 not checked. [2024-11-08 16:28:29,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981918087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:29,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 7, 7] total 116 [2024-11-08 16:28:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141881700] [2024-11-08 16:28:29,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:29,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2024-11-08 16:28:29,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2024-11-08 16:28:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6347, Invalid=7225, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 16:28:29,683 INFO L87 Difference]: Start difference. First operand 290 states and 312 transitions. Second operand has 117 states, 117 states have (on average 2.47008547008547) internal successors, (289), 116 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:53,938 INFO L93 Difference]: Finished difference Result 1867 states and 2126 transitions. [2024-11-08 16:28:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-11-08 16:28:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.47008547008547) internal successors, (289), 116 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2024-11-08 16:28:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:53,943 INFO L225 Difference]: With dead ends: 1867 [2024-11-08 16:28:53,943 INFO L226 Difference]: Without dead ends: 1784 [2024-11-08 16:28:53,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23355 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=35854, Invalid=70748, Unknown=0, NotChecked=0, Total=106602 [2024-11-08 16:28:53,952 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7109 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 1716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7109 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1716 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:53,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7109 Valid, 568 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1716 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 16:28:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2024-11-08 16:28:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 923. [2024-11-08 16:28:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 1.1366594360086768) internal successors, (1048), 922 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1048 transitions. [2024-11-08 16:28:54,398 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1048 transitions. Word has length 260 [2024-11-08 16:28:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:54,399 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1048 transitions. [2024-11-08 16:28:54,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.47008547008547) internal successors, (289), 116 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1048 transitions. [2024-11-08 16:28:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-08 16:28:54,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:54,403 INFO L215 NwaCegarLoop]: trace histogram [107, 107, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:54,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:28:54,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 16:28:54,604 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:54,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1769261204, now seen corresponding path program 1 times [2024-11-08 16:28:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334705602] [2024-11-08 16:28:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:29:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:29:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:29:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334705602] [2024-11-08 16:29:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334705602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:29:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82002579] [2024-11-08 16:29:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:29:05,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:29:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:29:05,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:29:05,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:29:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:29:05,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-08 16:29:05,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:29:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:29:14,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:29:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:29:33,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82002579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:29:33,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:29:33,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 327 [2024-11-08 16:29:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629777230] [2024-11-08 16:29:33,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:29:33,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 328 states [2024-11-08 16:29:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:29:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 328 interpolants. [2024-11-08 16:29:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47527, Invalid=59729, Unknown=0, NotChecked=0, Total=107256 [2024-11-08 16:29:33,330 INFO L87 Difference]: Start difference. First operand 923 states and 1048 transitions. Second operand has 328 states, 328 states have (on average 2.0609756097560976) internal successors, (676), 327 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:31:38,276 INFO L93 Difference]: Finished difference Result 4005 states and 4474 transitions. [2024-11-08 16:31:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-11-08 16:31:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 328 states, 328 states have (on average 2.0609756097560976) internal successors, (676), 327 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2024-11-08 16:31:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:31:38,285 INFO L225 Difference]: With dead ends: 4005 [2024-11-08 16:31:38,285 INFO L226 Difference]: Without dead ends: 3299 [2024-11-08 16:31:38,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70197 ImplicationChecksByTransitivity, 48.4s TimeCoverageRelationStatistics Valid=71395, Invalid=118265, Unknown=0, NotChecked=0, Total=189660 [2024-11-08 16:31:38,297 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 13665 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 2634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13665 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 5097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2634 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:31:38,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13665 Valid, 1138 Invalid, 5097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2634 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-08 16:31:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2024-11-08 16:31:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 1141. [2024-11-08 16:31:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.1105263157894736) internal successors, (1266), 1140 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1266 transitions. [2024-11-08 16:31:38,870 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1266 transitions. Word has length 276 [2024-11-08 16:31:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:31:38,871 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1266 transitions. [2024-11-08 16:31:38,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 328 states, 328 states have (on average 2.0609756097560976) internal successors, (676), 327 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1266 transitions. [2024-11-08 16:31:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-08 16:31:38,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:31:38,884 INFO L215 NwaCegarLoop]: trace histogram [216, 216, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:38,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:31:39,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:39,085 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:31:39,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash -405407283, now seen corresponding path program 2 times [2024-11-08 16:31:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:39,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093229000] [2024-11-08 16:31:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 46730 backedges. 0 proven. 46656 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:32:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093229000] [2024-11-08 16:32:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093229000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:32:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223711792] [2024-11-08 16:32:22,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:32:22,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:32:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:32:22,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:32:22,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a86cbe2-e9bc-4a33-a7c4-a57dfc1dfb76/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:32:24,022 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:32:24,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:32:24,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 219 conjuncts are in the unsatisfiable core [2024-11-08 16:32:24,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:32:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 46730 backedges. 0 proven. 46656 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:32:48,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:33:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 46730 backedges. 0 proven. 46656 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-08 16:33:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223711792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:33:57,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:33:57,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219, 219] total 654 [2024-11-08 16:33:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228921601] [2024-11-08 16:33:57,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:33:57,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 655 states [2024-11-08 16:33:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:33:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 655 interpolants. [2024-11-08 16:33:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190099, Invalid=238271, Unknown=0, NotChecked=0, Total=428370 [2024-11-08 16:33:58,024 INFO L87 Difference]: Start difference. First operand 1141 states and 1266 transitions. Second operand has 655 states, 655 states have (on average 2.030534351145038) internal successors, (1330), 654 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)