./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/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 6977cec8a403ff3f16926270da45a38f7b1f51a39c72ba3797fb74b9637fd796 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:41:15,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:41:15,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:41:15,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:41:15,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:41:15,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:41:15,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:41:15,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:41:15,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:41:15,478 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:41:15,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:41:15,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:41:15,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:41:15,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:41:15,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:41:15,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:41:15,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:41:15,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:41:15,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:41:15,482 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:41:15,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:15,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:15,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:41:15,483 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:41:15,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:41:15,484 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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/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 -> 6977cec8a403ff3f16926270da45a38f7b1f51a39c72ba3797fb74b9637fd796 [2024-11-28 04:41:15,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:41:15,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:41:15,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:41:15,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:41:15,796 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:41:15,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2024-11-28 04:41:18,762 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/data/e62d2dd29/c257ee8ef4ff4a59abdd56f36c0e753b/FLAG7e1329cde [2024-11-28 04:41:19,002 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:41:19,002 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2024-11-28 04:41:19,012 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/data/e62d2dd29/c257ee8ef4ff4a59abdd56f36c0e753b/FLAG7e1329cde [2024-11-28 04:41:19,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/data/e62d2dd29/c257ee8ef4ff4a59abdd56f36c0e753b [2024-11-28 04:41:19,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:41:19,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:41:19,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:41:19,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:41:19,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:41:19,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10eb664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19, skipping insertion in model container [2024-11-28 04:41:19,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:41:19,500 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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c[538,551] [2024-11-28 04:41:19,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:41:19,532 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:41:19,544 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_28cd0f0e-ded1-4016-8c4c-73b6174981f2/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c[538,551] [2024-11-28 04:41:19,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:41:19,578 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:41:19,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19 WrapperNode [2024-11-28 04:41:19,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:41:19,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:41:19,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:41:19,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:41:19,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,613 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-28 04:41:19,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:41:19,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:41:19,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:41:19,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:41:19,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,643 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]. [2024-11-28 04:41:19,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,648 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:41:19,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:41:19,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:41:19,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:41:19,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (1/1) ... [2024-11-28 04:41:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:19,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:19,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:41:19,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:41:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:41:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:41:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:41:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:41:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:41:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:41:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:41:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:41:19,784 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:41:19,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:41:19,978 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 04:41:19,978 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:41:19,988 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:41:19,988 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:41:19,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:19 BoogieIcfgContainer [2024-11-28 04:41:19,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:41:19,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:41:19,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:41:19,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:41:19,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:19" (1/3) ... [2024-11-28 04:41:19,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44b50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:19, skipping insertion in model container [2024-11-28 04:41:19,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:19" (2/3) ... [2024-11-28 04:41:19,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44b50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:19, skipping insertion in model container [2024-11-28 04:41:19,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:19" (3/3) ... [2024-11-28 04:41:19,999 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound20.c [2024-11-28 04:41:20,015 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:41:20,017 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-ll_valuebound20.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:41:20,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:41:20,089 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;@7da10d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:41:20,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:41:20,094 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) [2024-11-28 04:41:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:41:20,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:20,103 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:20,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:20,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1636017688, now seen corresponding path program 1 times [2024-11-28 04:41:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:20,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639283161] [2024-11-28 04:41:20,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:41:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:20,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639283161] [2024-11-28 04:41:20,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639283161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:20,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674322803] [2024-11-28 04:41:20,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:20,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:20,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:20,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:41:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:20,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:41:20,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:41:20,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:41:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674322803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:20,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:20,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:41:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466987998] [2024-11-28 04:41:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:20,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:41:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:20,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:41:20,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:41:20,542 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) [2024-11-28 04:41:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:20,575 INFO L93 Difference]: Finished difference Result 59 states and 100 transitions. [2024-11-28 04:41:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:41:20,577 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 [2024-11-28 04:41:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:20,591 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:41:20,591 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:41:20,596 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 [2024-11-28 04:41:20,602 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 [2024-11-28 04:41:20,603 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] [2024-11-28 04:41:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:41:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 04:41:20,641 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) [2024-11-28 04:41:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-11-28 04:41:20,649 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 23 [2024-11-28 04:41:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:20,651 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-11-28 04:41:20,651 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) [2024-11-28 04:41:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-11-28 04:41:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:41:20,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:20,653 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:20,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:41:20,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:41:20,854 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:20,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash -426146774, now seen corresponding path program 1 times [2024-11-28 04:41:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107376959] [2024-11-28 04:41:20,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:41:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107376959] [2024-11-28 04:41:21,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107376959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:21,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:41:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303523961] [2024-11-28 04:41:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:21,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:21,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:21,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:21,086 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) [2024-11-28 04:41:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:21,171 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-28 04:41:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:21,172 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 [2024-11-28 04:41:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:21,174 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:41:21,175 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 04:41:21,176 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 [2024-11-28 04:41:21,177 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:21,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:41:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 04:41:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-11-28 04:41:21,192 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) [2024-11-28 04:41:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-28 04:41:21,193 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 23 [2024-11-28 04:41:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:21,193 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-28 04:41:21,194 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) [2024-11-28 04:41:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-28 04:41:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:41:21,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:21,195 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] [2024-11-28 04:41:21,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:41:21,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:21,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -300538825, now seen corresponding path program 1 times [2024-11-28 04:41:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133166125] [2024-11-28 04:41:21,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:41:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133166125] [2024-11-28 04:41:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133166125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:21,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:41:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160465202] [2024-11-28 04:41:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:21,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:21,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:21,447 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) [2024-11-28 04:41:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:21,546 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-28 04:41:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:21,551 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 [2024-11-28 04:41:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:21,552 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:41:21,552 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:41:21,552 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 [2024-11-28 04:41:21,553 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-28 04:41:21,556 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] [2024-11-28 04:41:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:41:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-11-28 04:41:21,571 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) [2024-11-28 04:41:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-28 04:41:21,573 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 28 [2024-11-28 04:41:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:21,577 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-28 04:41:21,577 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) [2024-11-28 04:41:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-28 04:41:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:41:21,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:21,579 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] [2024-11-28 04:41:21,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:41:21,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:21,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1372167178, now seen corresponding path program 1 times [2024-11-28 04:41:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390536339] [2024-11-28 04:41:21,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:21,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609284363] [2024-11-28 04:41:21,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:21,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:21,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:21,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:41:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:21,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:41:21,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:41:21,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:41:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390536339] [2024-11-28 04:41:21,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609284363] [2024-11-28 04:41:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609284363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:21,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:21,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:41:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210743363] [2024-11-28 04:41:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:21,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:21,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:21,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:21,872 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) [2024-11-28 04:41:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:22,000 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-28 04:41:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:22,000 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 [2024-11-28 04:41:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:22,002 INFO L225 Difference]: With dead ends: 58 [2024-11-28 04:41:22,002 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 04:41:22,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:41:22,003 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 [2024-11-28 04:41:22,003 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] [2024-11-28 04:41:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 04:41:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-28 04:41:22,019 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) [2024-11-28 04:41:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-11-28 04:41:22,020 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 33 [2024-11-28 04:41:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:22,021 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-11-28 04:41:22,021 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) [2024-11-28 04:41:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-11-28 04:41:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:41:22,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:22,026 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] [2024-11-28 04:41:22,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:41:22,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:22,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:22,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash 404303124, now seen corresponding path program 1 times [2024-11-28 04:41:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:22,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378880968] [2024-11-28 04:41:22,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:22,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210732421] [2024-11-28 04:41:22,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:22,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:22,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:22,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:41:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:22,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:41:22,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:41:22,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:41:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378880968] [2024-11-28 04:41:22,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210732421] [2024-11-28 04:41:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210732421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:22,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:41:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-28 04:41:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24962784] [2024-11-28 04:41:22,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:22,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:41:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:22,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:41:22,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:41:22,796 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) [2024-11-28 04:41:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:22,978 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-11-28 04:41:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:41:22,980 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 [2024-11-28 04:41:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:22,982 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:41:22,982 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:41:22,983 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 [2024-11-28 04:41:22,985 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:22,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 136 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:41:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:41:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-28 04:41:23,005 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) [2024-11-28 04:41:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-28 04:41:23,007 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 39 [2024-11-28 04:41:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:23,009 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-28 04:41:23,009 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) [2024-11-28 04:41:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-28 04:41:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:41:23,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:23,012 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] [2024-11-28 04:41:23,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:41:23,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:23,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:23,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2023308484, now seen corresponding path program 1 times [2024-11-28 04:41:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11147292] [2024-11-28 04:41:23,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:23,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875759262] [2024-11-28 04:41:23,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:23,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:23,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:41:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:23,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:41:23,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 04:41:23,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 04:41:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11147292] [2024-11-28 04:41:23,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875759262] [2024-11-28 04:41:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875759262] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-28 04:41:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306401681] [2024-11-28 04:41:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:23,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:23,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:23,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:41:23,578 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) [2024-11-28 04:41:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:23,684 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2024-11-28 04:41:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:23,685 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 [2024-11-28 04:41:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:23,690 INFO L225 Difference]: With dead ends: 64 [2024-11-28 04:41:23,690 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 04:41:23,690 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 [2024-11-28 04:41:23,691 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 [2024-11-28 04:41:23,691 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] [2024-11-28 04:41:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 04:41:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-28 04:41:23,718 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) [2024-11-28 04:41:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2024-11-28 04:41:23,719 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 49 [2024-11-28 04:41:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:23,719 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2024-11-28 04:41:23,719 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) [2024-11-28 04:41:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2024-11-28 04:41:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:41:23,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:23,721 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] [2024-11-28 04:41:23,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:41:23,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:23,921 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:23,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1831809599, now seen corresponding path program 1 times [2024-11-28 04:41:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399080134] [2024-11-28 04:41:23,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:41:24,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:24,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399080134] [2024-11-28 04:41:24,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399080134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:24,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:41:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829791415] [2024-11-28 04:41:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:24,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:24,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:24,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:24,126 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) [2024-11-28 04:41:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:24,208 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-28 04:41:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:24,208 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 [2024-11-28 04:41:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:24,209 INFO L225 Difference]: With dead ends: 69 [2024-11-28 04:41:24,209 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:41:24,210 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 [2024-11-28 04:41:24,210 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 [2024-11-28 04:41:24,211 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] [2024-11-28 04:41:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:41:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-28 04:41:24,230 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) [2024-11-28 04:41:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-28 04:41:24,234 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 55 [2024-11-28 04:41:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:24,235 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-28 04:41:24,235 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) [2024-11-28 04:41:24,235 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-28 04:41:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:41:24,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:24,236 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] [2024-11-28 04:41:24,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:41:24,237 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:24,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1805297171, now seen corresponding path program 1 times [2024-11-28 04:41:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4401770] [2024-11-28 04:41:24,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:24,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388138799] [2024-11-28 04:41:24,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:24,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:24,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:24,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:24,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:41:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:24,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:41:24,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-28 04:41:25,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:41:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4401770] [2024-11-28 04:41:28,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388138799] [2024-11-28 04:41:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388138799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:28,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:41:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-28 04:41:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026625953] [2024-11-28 04:41:28,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:28,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:41:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:28,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:41:28,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:41:28,151 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) [2024-11-28 04:41:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:30,269 INFO L93 Difference]: Finished difference Result 134 states and 191 transitions. [2024-11-28 04:41:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:41:30,270 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 [2024-11-28 04:41:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:30,273 INFO L225 Difference]: With dead ends: 134 [2024-11-28 04:41:30,274 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 04:41:30,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:41:30,277 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:30,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 219 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:41:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 04:41:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2024-11-28 04:41:30,316 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) [2024-11-28 04:41:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2024-11-28 04:41:30,319 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 67 [2024-11-28 04:41:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:30,319 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2024-11-28 04:41:30,319 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) [2024-11-28 04:41:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2024-11-28 04:41:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:41:30,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:30,321 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] [2024-11-28 04:41:30,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:41:30,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:30,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:30,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash 644856999, now seen corresponding path program 1 times [2024-11-28 04:41:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483312937] [2024-11-28 04:41:30,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:30,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020280383] [2024-11-28 04:41:30,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:30,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:30,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:41:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:30,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:41:30,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 04:41:31,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:41:32,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483312937] [2024-11-28 04:41:32,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020280383] [2024-11-28 04:41:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020280383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:32,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:41:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-28 04:41:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520758578] [2024-11-28 04:41:32,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:32,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:41:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:32,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:41:32,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:41:32,026 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) [2024-11-28 04:41:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:32,653 INFO L93 Difference]: Finished difference Result 130 states and 165 transitions. [2024-11-28 04:41:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:41:32,654 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 [2024-11-28 04:41:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:32,656 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:41:32,656 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 04:41:32,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:41:32,657 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:32,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 268 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:41:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 04:41:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2024-11-28 04:41:32,680 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) [2024-11-28 04:41:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2024-11-28 04:41:32,682 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 78 [2024-11-28 04:41:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:32,682 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2024-11-28 04:41:32,682 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) [2024-11-28 04:41:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2024-11-28 04:41:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:41:32,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:32,684 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] [2024-11-28 04:41:32,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:32,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:32,885 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:32,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1470657900, now seen corresponding path program 2 times [2024-11-28 04:41:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:32,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492942978] [2024-11-28 04:41:32,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:41:32,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:32,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:41:32,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:41:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:41:33,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492942978] [2024-11-28 04:41:33,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492942978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:33,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396886127] [2024-11-28 04:41:33,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:41:33,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:33,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:33,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:41:33,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:41:33,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:41:33,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:41:33,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:41:33,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:41:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396886127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:33,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 04:41:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140562221] [2024-11-28 04:41:33,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:33,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:33,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:33,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:33,502 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) [2024-11-28 04:41:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:33,585 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2024-11-28 04:41:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:41:33,586 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 [2024-11-28 04:41:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:33,588 INFO L225 Difference]: With dead ends: 110 [2024-11-28 04:41:33,588 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 04:41:33,589 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 [2024-11-28 04:41:33,590 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 [2024-11-28 04:41:33,590 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] [2024-11-28 04:41:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 04:41:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-28 04:41:33,627 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) [2024-11-28 04:41:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2024-11-28 04:41:33,629 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 79 [2024-11-28 04:41:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:33,630 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2024-11-28 04:41:33,630 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) [2024-11-28 04:41:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2024-11-28 04:41:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:41:33,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:33,632 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] [2024-11-28 04:41:33,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:33,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:41:33,837 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:33,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:33,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1992152934, now seen corresponding path program 1 times [2024-11-28 04:41:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:33,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106969626] [2024-11-28 04:41:33,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:41:34,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106969626] [2024-11-28 04:41:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106969626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468440699] [2024-11-28 04:41:34,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:34,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:34,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:34,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:34,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:41:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:34,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:41:34,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-28 04:41:34,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:41:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468440699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:35,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:35,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-28 04:41:35,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20444258] [2024-11-28 04:41:35,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:35,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:41:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:35,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:41:35,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:41:35,254 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) [2024-11-28 04:41:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:35,701 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2024-11-28 04:41:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:41:35,702 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 [2024-11-28 04:41:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:35,704 INFO L225 Difference]: With dead ends: 104 [2024-11-28 04:41:35,704 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 04:41:35,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:41:35,706 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:35,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 330 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:41:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 04:41:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-11-28 04:41:35,753 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) [2024-11-28 04:41:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-28 04:41:35,755 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 83 [2024-11-28 04:41:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:35,756 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-28 04:41:35,756 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) [2024-11-28 04:41:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-28 04:41:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:41:35,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:35,758 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] [2024-11-28 04:41:35,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:35,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:41:35,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:35,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1871784667, now seen corresponding path program 1 times [2024-11-28 04:41:35,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:35,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350288060] [2024-11-28 04:41:35,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:35,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-28 04:41:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350288060] [2024-11-28 04:41:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350288060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643398366] [2024-11-28 04:41:36,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:36,111 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:36,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:41:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:36,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:41:36,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-28 04:41:36,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:41:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643398366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-28 04:41:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844028350] [2024-11-28 04:41:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:36,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:36,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:36,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:41:36,237 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) [2024-11-28 04:41:36,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:36,311 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2024-11-28 04:41:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:36,312 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 [2024-11-28 04:41:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:36,313 INFO L225 Difference]: With dead ends: 90 [2024-11-28 04:41:36,313 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 04:41:36,313 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 [2024-11-28 04:41:36,314 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-11-28 04:41:36,314 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] [2024-11-28 04:41:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 04:41:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-28 04:41:36,337 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) [2024-11-28 04:41:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-11-28 04:41:36,339 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 87 [2024-11-28 04:41:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:36,340 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-11-28 04:41:36,340 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) [2024-11-28 04:41:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-11-28 04:41:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:41:36,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:36,341 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] [2024-11-28 04:41:36,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:41:36,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:36,542 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:36,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 551807558, now seen corresponding path program 3 times [2024-11-28 04:41:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:36,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865299971] [2024-11-28 04:41:36,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:41:36,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:36,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 04:41:36,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:41:36,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086531503] [2024-11-28 04:41:36,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:41:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:36,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:36,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:41:36,739 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:41:36,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:41:36,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:41:36,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-28 04:41:37,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-28 04:42:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865299971] [2024-11-28 04:42:13,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:42:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086531503] [2024-11-28 04:42:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086531503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:13,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:42:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 25 [2024-11-28 04:42:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924289137] [2024-11-28 04:42:13,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:13,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:42:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:13,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:42:13,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:42:13,848 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 13 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-28 04:42:20,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:42:28,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:42:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:28,815 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2024-11-28 04:42:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:42:28,816 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 13 states have call predecessors, (31), 10 states have call successors, (31) Word has length 95 [2024-11-28 04:42:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:28,817 INFO L225 Difference]: With dead ends: 155 [2024-11-28 04:42:28,817 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 04:42:28,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=284, Invalid=1356, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:42:28,819 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 56 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:28,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 362 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-28 04:42:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 04:42:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 120. [2024-11-28 04:42:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 65 states have (on average 1.2) internal successors, (78), 70 states have internal predecessors, (78), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 04:42:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2024-11-28 04:42:28,880 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 95 [2024-11-28 04:42:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:28,880 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2024-11-28 04:42:28,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 13 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-28 04:42:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2024-11-28 04:42:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:42:28,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:28,883 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 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] [2024-11-28 04:42:28,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:29,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:29,087 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:29,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 419015342, now seen corresponding path program 2 times [2024-11-28 04:42:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762332814] [2024-11-28 04:42:29,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:29,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:29,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:29,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:42:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140880025] [2024-11-28 04:42:29,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:29,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:29,141 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:29,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:42:29,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:29,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:29,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:42:29,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 124 proven. 22 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-28 04:42:29,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-28 04:42:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762332814] [2024-11-28 04:42:29,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:42:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140880025] [2024-11-28 04:42:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140880025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:29,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:42:29,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2024-11-28 04:42:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064245098] [2024-11-28 04:42:29,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:29,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:42:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:29,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:42:29,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:42:29,704 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:42:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:30,495 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2024-11-28 04:42:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:42:30,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 106 [2024-11-28 04:42:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:30,497 INFO L225 Difference]: With dead ends: 135 [2024-11-28 04:42:30,497 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:42:30,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:42:30,498 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:30,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 171 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:42:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:42:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-28 04:42:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 80 states have internal predecessors, (87), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 36 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:42:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 170 transitions. [2024-11-28 04:42:30,569 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 170 transitions. Word has length 106 [2024-11-28 04:42:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:30,570 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 170 transitions. [2024-11-28 04:42:30,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:42:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 170 transitions. [2024-11-28 04:42:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:42:30,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:30,574 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:30,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:42:30,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:30,774 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:30,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash 118185325, now seen corresponding path program 4 times [2024-11-28 04:42:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642462730] [2024-11-28 04:42:30,775 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:42:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:30,807 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:42:30,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-28 04:42:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:31,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642462730] [2024-11-28 04:42:31,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642462730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:31,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538051923] [2024-11-28 04:42:31,248 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:42:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:31,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:31,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:31,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:42:31,359 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:42:31,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:31,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:42:31,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-28 04:42:31,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-28 04:42:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538051923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:31,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 04:42:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606155731] [2024-11-28 04:42:31,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:31,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:42:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:31,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:42:31,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:31,677 INFO L87 Difference]: Start difference. First operand 133 states and 170 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-28 04:42:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:31,806 INFO L93 Difference]: Finished difference Result 160 states and 201 transitions. [2024-11-28 04:42:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 107 [2024-11-28 04:42:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:31,808 INFO L225 Difference]: With dead ends: 160 [2024-11-28 04:42:31,808 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 04:42:31,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:31,809 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:31,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 04:42:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-28 04:42:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 75 states have internal predecessors, (79), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 04:42:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2024-11-28 04:42:31,870 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 107 [2024-11-28 04:42:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:31,872 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2024-11-28 04:42:31,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-28 04:42:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2024-11-28 04:42:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:42:31,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:31,874 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 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, 1, 1] [2024-11-28 04:42:31,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:42:32,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:42:32,075 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:32,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -240195853, now seen corresponding path program 2 times [2024-11-28 04:42:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:32,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206598768] [2024-11-28 04:42:32,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:32,097 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:32,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-28 04:42:32,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206598768] [2024-11-28 04:42:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206598768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212250251] [2024-11-28 04:42:32,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:32,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:32,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:32,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:32,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:42:32,689 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:32,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:32,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:42:32,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 52 proven. 47 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-28 04:42:33,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 52 proven. 47 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-28 04:42:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212250251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:34,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 30 [2024-11-28 04:42:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482500726] [2024-11-28 04:42:34,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:42:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:34,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:42:34,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:42:34,594 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 30 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-28 04:42:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:35,449 INFO L93 Difference]: Finished difference Result 140 states and 173 transitions. [2024-11-28 04:42:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:42:35,449 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) Word has length 111 [2024-11-28 04:42:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:35,450 INFO L225 Difference]: With dead ends: 140 [2024-11-28 04:42:35,451 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 04:42:35,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:42:35,452 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:35,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 260 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:42:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 04:42:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-28 04:42:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 69 states have internal predecessors, (72), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:42:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2024-11-28 04:42:35,486 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 111 [2024-11-28 04:42:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:35,487 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2024-11-28 04:42:35,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-28 04:42:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2024-11-28 04:42:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:42:35,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:35,489 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:35,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:42:35,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,692 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:35,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash -722461153, now seen corresponding path program 5 times [2024-11-28 04:42:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579483325] [2024-11-28 04:42:35,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:42:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:35,784 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:42:35,788 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:42:35,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792314065] [2024-11-28 04:42:35,790 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:42:35,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:35,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:35,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cd0f0e-ded1-4016-8c4c-73b6174981f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:42:35,920 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:42:35,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:35,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:42:35,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 76 proven. 95 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-11-28 04:42:36,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:28,895 WARN L286 SmtUtils]: Spent 9.56s on a formula simplification that was a NOOP. DAG size: 297 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:45:45,600 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:45:53,607 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:01,618 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:13,640 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:21,649 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:29,657 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:37,673 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:46:53,723 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:01,733 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:09,744 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:21,756 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:29,764 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:45,801 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:47:53,811 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:01,820 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:13,832 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:21,842 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:29,880 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:41,894 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:49,915 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:57,924 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:50:14,208 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:50:26,225 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:50:46,305 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:51:06,346 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:51:26,412 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:51:38,426 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:51:50,461 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:52:06,551 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:52:18,570 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:52:38,717 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:52:50,741 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:53:02,757 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:53:12,160 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:53:24,500 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:53:36,513 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:53:56,561 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:54:09,704 WARN L286 SmtUtils]: Spent 13.14s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:54:29,788 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:54:41,801 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:54:53,816 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:55:05,833 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:55:21,876 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:55:33,890 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:55:45,905 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:55:57,920 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:56:13,973 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)