./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB --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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:32:22,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:32:22,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:32:22,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:32:22,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:32:23,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:32:23,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:32:23,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:32:23,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:32:23,034 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:32:23,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:32:23,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:32:23,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:32:23,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:32:23,035 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:32:23,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:32:23,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:32:23,037 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:32:23,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:32:23,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:32:23,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:32:23,038 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:32:23,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:23,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:32:23,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:23,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:32:23,040 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2024-11-27 23:32:23,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:32:23,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:32:23,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:32:23,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:32:23,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:32:23,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-11-27 23:32:26,462 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/data/05736272f/7b216d1f9d7349f39d2ec96b61d71d1f/FLAG9b16d2ac4 [2024-11-27 23:32:26,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:32:26,752 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-11-27 23:32:26,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/data/05736272f/7b216d1f9d7349f39d2ec96b61d71d1f/FLAG9b16d2ac4 [2024-11-27 23:32:26,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/data/05736272f/7b216d1f9d7349f39d2ec96b61d71d1f [2024-11-27 23:32:26,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:32:26,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:32:26,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:26,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:32:26,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:32:26,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:26" (1/1) ... [2024-11-27 23:32:26,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472c681a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:26, skipping insertion in model container [2024-11-27 23:32:26,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:26" (1/1) ... [2024-11-27 23:32:26,865 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:32:27,048 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_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2024-11-27 23:32:27,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:27,084 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:32:27,092 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_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2024-11-27 23:32:27,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:27,115 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:32:27,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27 WrapperNode [2024-11-27 23:32:27,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:27,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:27,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:32:27,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:32:27,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,149 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-27 23:32:27,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:27,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:32:27,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:32:27,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:32:27,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,173 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:32:27,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,176 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:32:27,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:32:27,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:32:27,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:32:27,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (1/1) ... [2024-11-27 23:32:27,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:27,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:32:27,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:32:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:32:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:32:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:32:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:32:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:32:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:32:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:32:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:32:27,313 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:32:27,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:32:27,501 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-27 23:32:27,502 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:32:27,512 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:32:27,513 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:32:27,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:27 BoogieIcfgContainer [2024-11-27 23:32:27,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:32:27,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:32:27,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:32:27,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:32:27,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:32:26" (1/3) ... [2024-11-27 23:32:27,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9a1348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:27, skipping insertion in model container [2024-11-27 23:32:27,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:27" (2/3) ... [2024-11-27 23:32:27,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9a1348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:27, skipping insertion in model container [2024-11-27 23:32:27,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:27" (3/3) ... [2024-11-27 23:32:27,524 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2024-11-27 23:32:27,540 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:32:27,541 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-ll_valuebound2.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:32:27,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:32:27,620 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;@61784046, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:32:27,620 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:32:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:32:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:32:27,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:27,633 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:27,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:27,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1636017688, now seen corresponding path program 1 times [2024-11-27 23:32:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:27,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467309836] [2024-11-27 23:32:27,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:32:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467309836] [2024-11-27 23:32:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467309836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311446812] [2024-11-27 23:32:27,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:27,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:27,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:27,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:27,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:32:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:27,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:32:27,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:32:27,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:27,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311446812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:27,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:27,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:32:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836494206] [2024-11-27 23:32:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:27,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:32:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:27,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:32:27,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:32:27,976 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:32:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:28,004 INFO L93 Difference]: Finished difference Result 59 states and 100 transitions. [2024-11-27 23:32:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:32:28,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-27 23:32:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:28,019 INFO L225 Difference]: With dead ends: 59 [2024-11-27 23:32:28,019 INFO L226 Difference]: Without dead ends: 27 [2024-11-27 23:32:28,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:32:28,030 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:28,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-27 23:32:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-27 23:32:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:32:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-11-27 23:32:28,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 23 [2024-11-27 23:32:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:28,079 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-11-27 23:32:28,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:32:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-11-27 23:32:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:32:28,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:28,082 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:28,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:32:28,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:32:28,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:28,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash -426146774, now seen corresponding path program 1 times [2024-11-27 23:32:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902565012] [2024-11-27 23:32:28,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:32:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902565012] [2024-11-27 23:32:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902565012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:28,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:32:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909258340] [2024-11-27 23:32:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:28,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:28,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:28,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:28,543 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:32:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:28,613 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-27 23:32:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:28,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-11-27 23:32:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:28,615 INFO L225 Difference]: With dead ends: 39 [2024-11-27 23:32:28,615 INFO L226 Difference]: Without dead ends: 37 [2024-11-27 23:32:28,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:28,616 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:28,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-27 23:32:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-11-27 23:32:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:32:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-27 23:32:28,626 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 23 [2024-11-27 23:32:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:28,629 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-27 23:32:28,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:32:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-27 23:32:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:32:28,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:28,631 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:28,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:32:28,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:28,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash -300538825, now seen corresponding path program 1 times [2024-11-27 23:32:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:28,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357671656] [2024-11-27 23:32:28,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:32:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:28,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357671656] [2024-11-27 23:32:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357671656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:28,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:32:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104273765] [2024-11-27 23:32:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:28,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:28,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:28,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:28,848 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 23:32:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:28,932 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-27 23:32:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-27 23:32:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:28,934 INFO L225 Difference]: With dead ends: 43 [2024-11-27 23:32:28,934 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 23:32:28,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:28,935 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:28,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 23:32:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-11-27 23:32:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:32:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-27 23:32:28,952 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 28 [2024-11-27 23:32:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:28,953 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-27 23:32:28,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 23:32:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-27 23:32:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-27 23:32:28,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:28,956 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:28,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:32:28,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:28,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1372167178, now seen corresponding path program 1 times [2024-11-27 23:32:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471570511] [2024-11-27 23:32:28,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:29,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113023713] [2024-11-27 23:32:29,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:29,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:29,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:29,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:29,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:32:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:29,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:29,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:32:29,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471570511] [2024-11-27 23:32:29,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113023713] [2024-11-27 23:32:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113023713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:29,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:29,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:32:29,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88690364] [2024-11-27 23:32:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:29,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:29,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:29,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:29,195 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:32:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:29,314 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-27 23:32:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-27 23:32:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:29,318 INFO L225 Difference]: With dead ends: 58 [2024-11-27 23:32:29,318 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:32:29,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:29,320 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:29,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:32:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-27 23:32:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:32:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-11-27 23:32:29,340 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 33 [2024-11-27 23:32:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:29,340 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-11-27 23:32:29,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:32:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-11-27 23:32:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 23:32:29,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:29,342 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:29,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:29,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:29,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:29,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash 404303124, now seen corresponding path program 1 times [2024-11-27 23:32:29,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:29,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073068071] [2024-11-27 23:32:29,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:29,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170469171] [2024-11-27 23:32:29,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:29,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:29,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:29,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:29,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:32:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:29,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:32:29,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:32:29,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:32:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073068071] [2024-11-27 23:32:30,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170469171] [2024-11-27 23:32:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170469171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:30,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-27 23:32:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858507871] [2024-11-27 23:32:30,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:30,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:32:30,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:30,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:32:30,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:30,091 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 23:32:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:30,298 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-11-27 23:32:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:32:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 39 [2024-11-27 23:32:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:30,300 INFO L225 Difference]: With dead ends: 59 [2024-11-27 23:32:30,301 INFO L226 Difference]: Without dead ends: 57 [2024-11-27 23:32:30,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:30,302 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:30,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 136 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:32:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-27 23:32:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-27 23:32:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:32:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-27 23:32:30,315 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 39 [2024-11-27 23:32:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:30,315 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-27 23:32:30,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 23:32:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-27 23:32:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:32:30,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:30,317 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:30,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:30,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:30,518 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:30,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2023308484, now seen corresponding path program 1 times [2024-11-27 23:32:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345536274] [2024-11-27 23:32:30,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073857589] [2024-11-27 23:32:30,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:30,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:30,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:32:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:30,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:32:30,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 23:32:30,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 23:32:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345536274] [2024-11-27 23:32:30,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073857589] [2024-11-27 23:32:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073857589] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-27 23:32:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147960695] [2024-11-27 23:32:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:30,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:30,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:30,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:30,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:32:30,874 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 23:32:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:30,989 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2024-11-27 23:32:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:30,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-11-27 23:32:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:30,991 INFO L225 Difference]: With dead ends: 64 [2024-11-27 23:32:30,991 INFO L226 Difference]: Without dead ends: 62 [2024-11-27 23:32:30,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:30,993 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:30,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-27 23:32:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-27 23:32:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:32:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2024-11-27 23:32:31,022 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 49 [2024-11-27 23:32:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:31,022 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2024-11-27 23:32:31,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 23:32:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2024-11-27 23:32:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 23:32:31,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:31,028 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:31,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:31,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:31,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:31,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1831809599, now seen corresponding path program 1 times [2024-11-27 23:32:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:31,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746927112] [2024-11-27 23:32:31,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:31,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 23:32:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746927112] [2024-11-27 23:32:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746927112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:31,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:32:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547694201] [2024-11-27 23:32:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:31,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:31,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:31,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:31,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:31,497 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:32:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:31,591 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-27 23:32:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-11-27 23:32:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:31,593 INFO L225 Difference]: With dead ends: 69 [2024-11-27 23:32:31,594 INFO L226 Difference]: Without dead ends: 58 [2024-11-27 23:32:31,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:31,595 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:31,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-27 23:32:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-27 23:32:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:32:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-27 23:32:31,621 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 55 [2024-11-27 23:32:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:31,622 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-27 23:32:31,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:32:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-27 23:32:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:32:31,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:31,623 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:31,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:32:31,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:31,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1805297171, now seen corresponding path program 1 times [2024-11-27 23:32:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287129228] [2024-11-27 23:32:31,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340921590] [2024-11-27 23:32:31,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:31,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:31,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:31,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:32:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:31,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 23:32:31,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-27 23:32:32,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-27 23:32:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287129228] [2024-11-27 23:32:35,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340921590] [2024-11-27 23:32:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340921590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:35,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:35,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-27 23:32:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159943481] [2024-11-27 23:32:35,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:35,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:32:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:35,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:32:35,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:32:35,827 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-27 23:32:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:38,185 INFO L93 Difference]: Finished difference Result 134 states and 191 transitions. [2024-11-27 23:32:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:32:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 67 [2024-11-27 23:32:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:38,188 INFO L225 Difference]: With dead ends: 134 [2024-11-27 23:32:38,188 INFO L226 Difference]: Without dead ends: 113 [2024-11-27 23:32:38,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:32:38,190 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:38,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 219 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:32:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-27 23:32:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2024-11-27 23:32:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 55 states have internal predecessors, (62), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-27 23:32:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2024-11-27 23:32:38,237 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 67 [2024-11-27 23:32:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:38,237 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2024-11-27 23:32:38,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-27 23:32:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2024-11-27 23:32:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:32:38,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:38,239 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:38,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:38,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:32:38,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:38,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash 644856999, now seen corresponding path program 1 times [2024-11-27 23:32:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970126960] [2024-11-27 23:32:38,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:38,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313555045] [2024-11-27 23:32:38,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:38,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:38,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:38,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:38,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:32:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:38,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:32:38,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-27 23:32:39,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-27 23:32:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:40,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970126960] [2024-11-27 23:32:40,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:40,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313555045] [2024-11-27 23:32:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313555045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:40,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:40,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-27 23:32:40,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74028019] [2024-11-27 23:32:40,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:40,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:32:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:40,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:32:40,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:32:40,109 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-27 23:32:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:40,844 INFO L93 Difference]: Finished difference Result 130 states and 165 transitions. [2024-11-27 23:32:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:32:40,845 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 78 [2024-11-27 23:32:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:40,847 INFO L225 Difference]: With dead ends: 130 [2024-11-27 23:32:40,847 INFO L226 Difference]: Without dead ends: 99 [2024-11-27 23:32:40,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:32:40,849 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:40,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 268 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:32:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-27 23:32:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2024-11-27 23:32:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 49 states have (on average 1.183673469387755) internal successors, (58), 51 states have internal predecessors, (58), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:32:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2024-11-27 23:32:40,891 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 78 [2024-11-27 23:32:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:40,892 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2024-11-27 23:32:40,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-27 23:32:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2024-11-27 23:32:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 23:32:40,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:40,895 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:40,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:41,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:41,099 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:41,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1470657900, now seen corresponding path program 2 times [2024-11-27 23:32:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457091390] [2024-11-27 23:32:41,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:41,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:41,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-27 23:32:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457091390] [2024-11-27 23:32:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457091390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673503801] [2024-11-27 23:32:41,414 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:41,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:41,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:41,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:32:41,491 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:41,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:41,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:41,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-27 23:32:41,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-27 23:32:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673503801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:41,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-27 23:32:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587372581] [2024-11-27 23:32:41,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:41,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:41,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:41,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:41,657 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-27 23:32:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:41,739 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2024-11-27 23:32:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:41,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 79 [2024-11-27 23:32:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:41,742 INFO L225 Difference]: With dead ends: 110 [2024-11-27 23:32:41,742 INFO L226 Difference]: Without dead ends: 90 [2024-11-27 23:32:41,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:41,743 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:41,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-27 23:32:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-27 23:32:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-27 23:32:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2024-11-27 23:32:41,784 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 79 [2024-11-27 23:32:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:41,785 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2024-11-27 23:32:41,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-27 23:32:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2024-11-27 23:32:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 23:32:41,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:41,786 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:41,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:32:41,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:41,991 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:41,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1992152934, now seen corresponding path program 1 times [2024-11-27 23:32:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:41,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085831849] [2024-11-27 23:32:41,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-27 23:32:42,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085831849] [2024-11-27 23:32:42,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085831849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491189035] [2024-11-27 23:32:42,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:42,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:42,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:42,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:42,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:32:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:42,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 23:32:42,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-27 23:32:43,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-27 23:32:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491189035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:43,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-27 23:32:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597768754] [2024-11-27 23:32:43,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:43,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:32:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:43,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:32:43,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:32:43,529 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 23:32:44,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:44,067 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2024-11-27 23:32:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:32:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 83 [2024-11-27 23:32:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:44,069 INFO L225 Difference]: With dead ends: 104 [2024-11-27 23:32:44,069 INFO L226 Difference]: Without dead ends: 89 [2024-11-27 23:32:44,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:32:44,071 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:44,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 330 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:32:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-27 23:32:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-11-27 23:32:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 50 states have internal predecessors, (56), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 23:32:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-27 23:32:44,099 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 83 [2024-11-27 23:32:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:44,099 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-27 23:32:44,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 23:32:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-27 23:32:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:32:44,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:44,101 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:44,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:32:44,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:44,305 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:44,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1871784667, now seen corresponding path program 1 times [2024-11-27 23:32:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:44,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551495996] [2024-11-27 23:32:44,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-27 23:32:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551495996] [2024-11-27 23:32:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551495996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272578058] [2024-11-27 23:32:44,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:44,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:44,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:44,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:32:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:44,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:32:44,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-27 23:32:44,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:44,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272578058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:44,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:44,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-27 23:32:44,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547996874] [2024-11-27 23:32:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:44,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:44,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:44,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:44,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:44,568 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 23:32:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:44,654 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2024-11-27 23:32:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:44,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 87 [2024-11-27 23:32:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:44,657 INFO L225 Difference]: With dead ends: 90 [2024-11-27 23:32:44,657 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 23:32:44,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:44,658 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:44,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 23:32:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-27 23:32:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:32:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-11-27 23:32:44,679 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 87 [2024-11-27 23:32:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:44,680 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-11-27 23:32:44,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 23:32:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-11-27 23:32:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 23:32:44,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:44,681 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:44,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:32:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:32:44,882 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:44,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 551807558, now seen corresponding path program 3 times [2024-11-27 23:32:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333133009] [2024-11-27 23:32:44,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:44,959 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:32:44,959 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-27 23:32:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333133009] [2024-11-27 23:32:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333133009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35227455] [2024-11-27 23:32:45,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:45,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:45,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:45,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:32:45,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:32:45,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:45,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 23:32:45,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-27 23:32:46,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-27 23:32:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35227455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:47,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:47,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 23:32:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493633405] [2024-11-27 23:32:47,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:47,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:32:47,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:47,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:32:47,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:32:47,201 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 15 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 14 states have call successors, (44) [2024-11-27 23:32:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:47,662 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2024-11-27 23:32:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:32:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 15 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 14 states have call successors, (44) Word has length 95 [2024-11-27 23:32:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:47,664 INFO L225 Difference]: With dead ends: 136 [2024-11-27 23:32:47,665 INFO L226 Difference]: Without dead ends: 89 [2024-11-27 23:32:47,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:32:47,668 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 18 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:47,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 433 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:32:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-27 23:32:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2024-11-27 23:32:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:32:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-27 23:32:47,701 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 95 [2024-11-27 23:32:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:47,702 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-27 23:32:47,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 15 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 14 states have call successors, (44) [2024-11-27 23:32:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-27 23:32:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 23:32:47,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:47,705 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:47,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:32:47,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:47,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:47,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1190307559, now seen corresponding path program 1 times [2024-11-27 23:32:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021677412] [2024-11-27 23:32:47,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013111249] [2024-11-27 23:32:47,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:47,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:47,970 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:47,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:32:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:48,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:32:48,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-27 23:32:48,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-27 23:32:52,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021677412] [2024-11-27 23:32:52,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013111249] [2024-11-27 23:32:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013111249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:52,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 29 [2024-11-27 23:32:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440702428] [2024-11-27 23:32:52,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:52,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:32:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:52,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:32:52,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:32:52,193 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 29 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2024-11-27 23:32:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:53,718 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-27 23:32:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:32:53,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) Word has length 100 [2024-11-27 23:32:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:53,720 INFO L225 Difference]: With dead ends: 106 [2024-11-27 23:32:53,721 INFO L226 Difference]: Without dead ends: 86 [2024-11-27 23:32:53,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:32:53,722 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:53,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:32:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-27 23:32:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-27 23:32:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:32:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2024-11-27 23:32:53,757 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 100 [2024-11-27 23:32:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:53,757 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2024-11-27 23:32:53,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2024-11-27 23:32:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2024-11-27 23:32:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 23:32:53,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:53,759 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:53,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:32:53,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:32:53,964 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:53,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -602053012, now seen corresponding path program 1 times [2024-11-27 23:32:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338470482] [2024-11-27 23:32:53,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:32:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628685150] [2024-11-27 23:32:54,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:54,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:54,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:54,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:54,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:32:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:54,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 23:32:54,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 64 proven. 66 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-27 23:32:55,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:57,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338470482] [2024-11-27 23:32:57,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:32:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628685150] [2024-11-27 23:32:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628685150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:57,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:57,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-27 23:32:57,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332200007] [2024-11-27 23:32:57,747 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:57,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:32:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:57,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:32:57,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:32:57,749 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-27 23:32:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:58,390 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2024-11-27 23:32:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:32:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 106 [2024-11-27 23:32:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:58,392 INFO L225 Difference]: With dead ends: 92 [2024-11-27 23:32:58,392 INFO L226 Difference]: Without dead ends: 88 [2024-11-27 23:32:58,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:32:58,393 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:58,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 357 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:32:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-27 23:32:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-27 23:32:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:32:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2024-11-27 23:32:58,422 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 106 [2024-11-27 23:32:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:58,423 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2024-11-27 23:32:58,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-27 23:32:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2024-11-27 23:32:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:32:58,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:58,426 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:58,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:32:58,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:32:58,630 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:58,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash 182505973, now seen corresponding path program 1 times [2024-11-27 23:32:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856540192] [2024-11-27 23:32:58,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-27 23:32:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856540192] [2024-11-27 23:32:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856540192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151427758] [2024-11-27 23:32:59,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:59,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:59,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:59,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:59,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:32:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:59,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:32:59,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-27 23:32:59,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-27 23:33:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151427758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:33:00,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:33:00,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 26 [2024-11-27 23:33:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469302808] [2024-11-27 23:33:00,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:00,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:33:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:00,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:33:00,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:33:00,797 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 26 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-27 23:33:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:01,479 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2024-11-27 23:33:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:33:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) Word has length 111 [2024-11-27 23:33:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:01,480 INFO L225 Difference]: With dead ends: 88 [2024-11-27 23:33:01,480 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:33:01,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:33:01,481 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:01,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 427 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:33:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:33:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:33:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-27 23:33:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:33:01,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2024-11-27 23:33:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:01,483 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:33:01,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-27 23:33:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:33:01,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:33:01,488 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 23:33:01,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:33:01,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:33:01,696 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:01,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 23:33:03,135 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:33:03,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:33:03 BoogieIcfgContainer [2024-11-27 23:33:03,158 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:33:03,158 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:33:03,158 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:33:03,159 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:33:03,159 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:27" (3/4) ... [2024-11-27 23:33:03,162 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:33:03,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-27 23:33:03,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-27 23:33:03,179 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-27 23:33:03,179 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 23:33:03,180 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 23:33:03,180 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:33:03,284 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:33:03,285 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:33:03,285 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:33:03,287 INFO L158 Benchmark]: Toolchain (without parser) took 36455.78ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 119.7MB in the beginning and 112.9MB in the end (delta: 6.8MB). Peak memory consumption was 131.3MB. Max. memory is 16.1GB. [2024-11-27 23:33:03,287 INFO L158 Benchmark]: CDTParser took 1.47ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:33:03,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.90ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:33:03,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.66ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:33:03,288 INFO L158 Benchmark]: Boogie Preprocessor took 33.96ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:33:03,288 INFO L158 Benchmark]: RCFGBuilder took 329.10ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 93.7MB in the end (delta: 11.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:33:03,289 INFO L158 Benchmark]: TraceAbstraction took 35641.82ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 93.2MB in the beginning and 118.1MB in the end (delta: -24.9MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. [2024-11-27 23:33:03,289 INFO L158 Benchmark]: Witness Printer took 127.03ms. Allocated memory is still 268.4MB. Free memory was 118.1MB in the beginning and 112.9MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:33:03,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.90ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.66ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.96ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 329.10ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 93.7MB in the end (delta: 11.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 35641.82ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 93.2MB in the beginning and 118.1MB in the end (delta: -24.9MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. * Witness Printer took 127.03ms. Allocated memory is still 268.4MB. Free memory was 118.1MB in the beginning and 112.9MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.1s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 244 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 3343 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2794 mSDsCounter, 312 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2635 IncrementalHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 312 mSolverCounterUnsat, 549 mSDtfsCounter, 2635 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1768 GetRequests, 1531 SyntacticMatches, 9 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 65 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 2006 NumberOfCodeBlocks, 1954 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2204 ConstructedInterpolants, 0 QuantifiedInterpolants, 11547 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2109 ConjunctsInSsa, 265 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 6735/7219 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((d == 1) && (p == 1)) && (B == 1)) && (r == 0)) && (2 == q)) && (2 == A)) || ((((((p == 1) && (((long long) A + 1) <= ((__int128) 2 * d))) && (d <= A)) && (q == 1)) && (((__int128) d + r) == A)) && (((__int128) d + A) == ((__int128) ((long long) 2 * B) + r)))) || ((((((2 == p) && (((long long) 2 * B) == d)) && (q == 0)) && (r == A)) && (((__int128) r + 1) <= d)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) || ((((((2 == p) && (B == 1)) && (r == 0)) && (2 == q)) && (2 == A)) && (2 == d))) || ((((((((p == 4) && (1 <= B)) && ((((long long) 2 * B) + 1) <= d)) && (r <= 2)) && (q == 0)) && (r == A)) && (((d >= 0) ? (d % 2) : ((d % 2) + 2)) == 0)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) || ((((p == 1) && (d == B)) && (q == 0)) && (r == A))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((p == 1) && (d == B)) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == A)) || (((((((((p == 4) && (1 <= B)) && (2 <= ((d >= 0) ? (d / 2) : ((d / 2) - 1)))) && (((long long) 2 * B) <= r)) && (r <= 2)) && (q == 0)) && (r == A)) && (((d >= 0) ? (d % 2) : ((d % 2) + 2)) == 0)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) || (((((((2 == p) && (((long long) 2 * B) == d)) && (r <= 2)) && (2 <= d)) && (q == 0)) && (r == A)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) RESULT: Ultimate proved your program to be correct! [2024-11-27 23:33:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d01c2f8a-eaf9-4b34-85ec-10b5a2b25741/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE