./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/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 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:30:07,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:30:07,803 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:30:07,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:30:07,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:30:07,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:30:07,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:30:07,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:30:07,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:30:07,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:30:07,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:30:07,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:30:07,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:30:07,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:30:07,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:30:07,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:30:07,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:30:07,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:07,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:07,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:30:07,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:30:07,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:30:07,842 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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/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 -> 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df [2024-11-27 20:30:08,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:30:08,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:30:08,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:30:08,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:30:08,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:30:08,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2024-11-27 20:30:11,087 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/data/48ce21c87/8abb9edd42054e1aac8501915dc30e77/FLAG5cb1d0a91 [2024-11-27 20:30:11,400 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:30:11,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2024-11-27 20:30:11,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/data/48ce21c87/8abb9edd42054e1aac8501915dc30e77/FLAG5cb1d0a91 [2024-11-27 20:30:11,685 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/data/48ce21c87/8abb9edd42054e1aac8501915dc30e77 [2024-11-27 20:30:11,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:30:11,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:30:11,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:11,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:30:11,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:30:11,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:11,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181da3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11, skipping insertion in model container [2024-11-27 20:30:11,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:11,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:30:11,895 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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2024-11-27 20:30:11,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:11,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:30:11,947 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_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2024-11-27 20:30:11,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:11,979 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:30:11,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11 WrapperNode [2024-11-27 20:30:11,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:11,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:11,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:30:11,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:30:11,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:11,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,015 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-11-27 20:30:12,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:12,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:30:12,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:30:12,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:30:12,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,045 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:30:12,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,049 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:30:12,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:30:12,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:30:12,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:30:12,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (1/1) ... [2024-11-27 20:30:12,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:12,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:12,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:30:12,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:30:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:30:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:30:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:30:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:30:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:30:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:30:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:30:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:30:12,177 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:30:12,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:30:12,320 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-27 20:30:12,321 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:30:12,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:30:12,331 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:30:12,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:12 BoogieIcfgContainer [2024-11-27 20:30:12,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:30:12,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:30:12,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:30:12,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:30:12,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:30:11" (1/3) ... [2024-11-27 20:30:12,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f88559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:12, skipping insertion in model container [2024-11-27 20:30:12,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:11" (2/3) ... [2024-11-27 20:30:12,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f88559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:12, skipping insertion in model container [2024-11-27 20:30:12,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:12" (3/3) ... [2024-11-27 20:30:12,346 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.c [2024-11-27 20:30:12,364 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:30:12,366 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_unwindbound10.c that has 3 procedures, 30 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:30:12,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:30:12,439 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;@71e11ddb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:30:12,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:30:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:30:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 20:30:12,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:12,451 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:12,451 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:12,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1165920622, now seen corresponding path program 1 times [2024-11-27 20:30:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:12,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081791927] [2024-11-27 20:30:12,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:12,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:30:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081791927] [2024-11-27 20:30:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081791927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:12,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031080119] [2024-11-27 20:30:12,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:12,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:12,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:12,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:12,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:30:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:12,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:30:12,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:30:12,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:12,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031080119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:12,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:12,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:30:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925434797] [2024-11-27 20:30:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:12,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:30:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:12,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:30:12,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:30:12,776 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:30:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:12,801 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2024-11-27 20:30:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:30:12,803 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-27 20:30:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:12,810 INFO L225 Difference]: With dead ends: 57 [2024-11-27 20:30:12,811 INFO L226 Difference]: Without dead ends: 26 [2024-11-27 20:30:12,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:30:12,819 INFO L435 NwaCegarLoop]: 39 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, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:12,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-27 20:30:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-27 20:30:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 20:30:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-27 20:30:12,868 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2024-11-27 20:30:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:12,869 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-27 20:30:12,870 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:30:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-27 20:30:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:30:12,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:12,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:12,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:30:13,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:30:13,077 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:13,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -572051340, now seen corresponding path program 1 times [2024-11-27 20:30:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186606377] [2024-11-27 20:30:13,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:13,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893750633] [2024-11-27 20:30:13,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:13,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:13,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:13,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:30:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:13,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:30:13,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:30:13,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:13,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186606377] [2024-11-27 20:30:13,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893750633] [2024-11-27 20:30:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893750633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708981277] [2024-11-27 20:30:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:13,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:13,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:13,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:13,402 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:30:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:13,498 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2024-11-27 20:30:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-27 20:30:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:13,500 INFO L225 Difference]: With dead ends: 43 [2024-11-27 20:30:13,500 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 20:30:13,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:13,501 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:13,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 109 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 20:30:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-27 20:30:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 23 states have internal predecessors, (28), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 20:30:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2024-11-27 20:30:13,513 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 19 [2024-11-27 20:30:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:13,514 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2024-11-27 20:30:13,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:30:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2024-11-27 20:30:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:30:13,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:13,515 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:13,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:30:13,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:13,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:13,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -570025552, now seen corresponding path program 1 times [2024-11-27 20:30:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641093082] [2024-11-27 20:30:13,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:30:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641093082] [2024-11-27 20:30:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641093082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:13,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:30:13,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020758854] [2024-11-27 20:30:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:13,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:30:13,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:13,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:30:13,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:30:13,838 INFO L87 Difference]: Start difference. First operand 40 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:30:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:13,867 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2024-11-27 20:30:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:30:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-27 20:30:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:13,869 INFO L225 Difference]: With dead ends: 56 [2024-11-27 20:30:13,870 INFO L226 Difference]: Without dead ends: 42 [2024-11-27 20:30:13,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:30:13,871 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:13,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-27 20:30:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-27 20:30:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 20:30:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2024-11-27 20:30:13,893 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2024-11-27 20:30:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:13,893 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2024-11-27 20:30:13,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:30:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2024-11-27 20:30:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 20:30:13,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:13,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:13,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:30:13,896 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:13,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2109936158, now seen corresponding path program 1 times [2024-11-27 20:30:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897848577] [2024-11-27 20:30:13,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758868648] [2024-11-27 20:30:13,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:13,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:13,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:30:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:30:14,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:30:14,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:14,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897848577] [2024-11-27 20:30:14,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758868648] [2024-11-27 20:30:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758868648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200870879] [2024-11-27 20:30:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:14,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:14,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:14,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:14,128 INFO L87 Difference]: Start difference. First operand 42 states and 59 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:30:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:14,224 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-11-27 20:30:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:14,224 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-27 20:30:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:14,225 INFO L225 Difference]: With dead ends: 49 [2024-11-27 20:30:14,226 INFO L226 Difference]: Without dead ends: 47 [2024-11-27 20:30:14,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:14,227 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:14,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 132 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-27 20:30:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-27 20:30:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 20:30:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-11-27 20:30:14,237 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 24 [2024-11-27 20:30:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:14,237 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-11-27 20:30:14,237 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:30:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-11-27 20:30:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 20:30:14,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:14,238 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:14,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:14,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:14,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1553939852, now seen corresponding path program 1 times [2024-11-27 20:30:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:14,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018235623] [2024-11-27 20:30:14,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:14,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216891428] [2024-11-27 20:30:14,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:14,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:14,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:30:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:30:14,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:30:14,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018235623] [2024-11-27 20:30:14,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216891428] [2024-11-27 20:30:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216891428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:14,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666610255] [2024-11-27 20:30:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:14,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:14,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:14,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:14,609 INFO L87 Difference]: Start difference. First operand 46 states and 62 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 20:30:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:14,684 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2024-11-27 20:30:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:14,685 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, (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 29 [2024-11-27 20:30:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:14,687 INFO L225 Difference]: With dead ends: 71 [2024-11-27 20:30:14,687 INFO L226 Difference]: Without dead ends: 67 [2024-11-27 20:30:14,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:14,688 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:14,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-27 20:30:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-27 20:30:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-27 20:30:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2024-11-27 20:30:14,706 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 29 [2024-11-27 20:30:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:14,706 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2024-11-27 20:30:14,706 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 20:30:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2024-11-27 20:30:14,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-27 20:30:14,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:14,707 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:14,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:14,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:14,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1819933455, now seen corresponding path program 1 times [2024-11-27 20:30:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150417631] [2024-11-27 20:30:14,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:15,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:15,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150417631] [2024-11-27 20:30:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150417631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:15,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:15,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801142798] [2024-11-27 20:30:15,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:15,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:15,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:15,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:15,142 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 20:30:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:15,227 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2024-11-27 20:30:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:15,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-11-27 20:30:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:15,230 INFO L225 Difference]: With dead ends: 83 [2024-11-27 20:30:15,230 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 20:30:15,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:15,231 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:15,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 20:30:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2024-11-27 20:30:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 45 states have internal predecessors, (50), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-27 20:30:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2024-11-27 20:30:15,263 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 35 [2024-11-27 20:30:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:15,263 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2024-11-27 20:30:15,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 20:30:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2024-11-27 20:30:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 20:30:15,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:15,267 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:15,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:30:15,267 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:15,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash -356976342, now seen corresponding path program 1 times [2024-11-27 20:30:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50546366] [2024-11-27 20:30:15,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:15,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255095420] [2024-11-27 20:30:15,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:15,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:15,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:30:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:30:15,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:30:15,517 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:15,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50546366] [2024-11-27 20:30:15,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255095420] [2024-11-27 20:30:15,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255095420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:15,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:15,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405825239] [2024-11-27 20:30:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:15,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:15,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:15,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:15,520 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:15,593 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-27 20:30:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 38 [2024-11-27 20:30:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:15,595 INFO L225 Difference]: With dead ends: 84 [2024-11-27 20:30:15,595 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 20:30:15,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:15,596 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:15,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 20:30:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-11-27 20:30:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 50 states have internal predecessors, (56), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 20:30:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2024-11-27 20:30:15,615 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 38 [2024-11-27 20:30:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:15,616 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2024-11-27 20:30:15,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2024-11-27 20:30:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 20:30:15,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:15,617 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:15,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:15,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:30:15,821 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:15,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -354950554, now seen corresponding path program 1 times [2024-11-27 20:30:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764081865] [2024-11-27 20:30:15,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:15,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:15,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764081865] [2024-11-27 20:30:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764081865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308763097] [2024-11-27 20:30:15,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:15,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:15,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:15,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:30:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:30:15,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:16,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308763097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:16,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:16,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-27 20:30:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186064167] [2024-11-27 20:30:16,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:16,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:30:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:16,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:30:16,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:16,146 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:30:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:16,349 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2024-11-27 20:30:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:30:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 38 [2024-11-27 20:30:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:16,351 INFO L225 Difference]: With dead ends: 226 [2024-11-27 20:30:16,351 INFO L226 Difference]: Without dead ends: 205 [2024-11-27 20:30:16,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:30:16,354 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:16,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 145 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-27 20:30:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2024-11-27 20:30:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.205128205128205) internal successors, (141), 128 states have internal predecessors, (141), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-27 20:30:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2024-11-27 20:30:16,430 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 38 [2024-11-27 20:30:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:16,431 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2024-11-27 20:30:16,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:30:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2024-11-27 20:30:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 20:30:16,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:16,435 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:16,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:16,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:30:16,636 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:16,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash 871222017, now seen corresponding path program 1 times [2024-11-27 20:30:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:16,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873087301] [2024-11-27 20:30:16,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:16,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:30:16,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:16,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873087301] [2024-11-27 20:30:16,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873087301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:16,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365400640] [2024-11-27 20:30:16,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:16,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:16,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:16,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:30:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:16,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:30:16,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 20:30:17,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365400640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:17,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:17,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-27 20:30:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986775761] [2024-11-27 20:30:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:17,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:17,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:17,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:17,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:30:17,137 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:30:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:17,287 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2024-11-27 20:30:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:30:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-11-27 20:30:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:17,290 INFO L225 Difference]: With dead ends: 230 [2024-11-27 20:30:17,291 INFO L226 Difference]: Without dead ends: 220 [2024-11-27 20:30:17,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:30:17,294 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:17,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 136 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-27 20:30:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2024-11-27 20:30:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 130 states have (on average 1.176923076923077) internal successors, (153), 141 states have internal predecessors, (153), 57 states have call successors, (57), 28 states have call predecessors, (57), 28 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-27 20:30:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 261 transitions. [2024-11-27 20:30:17,337 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 261 transitions. Word has length 40 [2024-11-27 20:30:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:17,337 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 261 transitions. [2024-11-27 20:30:17,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:30:17,337 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 261 transitions. [2024-11-27 20:30:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-27 20:30:17,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:17,338 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:17,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:30:17,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,540 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:17,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601896, now seen corresponding path program 2 times [2024-11-27 20:30:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:17,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196738843] [2024-11-27 20:30:17,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:17,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:17,563 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:17,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:30:17,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183611355] [2024-11-27 20:30:17,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:17,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:17,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:17,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:30:17,637 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:17,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:17,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:30:17,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:18,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:30:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196738843] [2024-11-27 20:30:18,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183611355] [2024-11-27 20:30:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183611355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:18,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:30:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-11-27 20:30:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642428187] [2024-11-27 20:30:18,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:18,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:18,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:18,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:18,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:18,625 INFO L87 Difference]: Start difference. First operand 216 states and 261 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-27 20:30:23,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-27 20:30:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:23,566 INFO L93 Difference]: Finished difference Result 272 states and 344 transitions. [2024-11-27 20:30:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:30:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 43 [2024-11-27 20:30:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:23,569 INFO L225 Difference]: With dead ends: 272 [2024-11-27 20:30:23,571 INFO L226 Difference]: Without dead ends: 270 [2024-11-27 20:30:23,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:30:23,574 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:23,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 237 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 20:30:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-27 20:30:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 228. [2024-11-27 20:30:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 139 states have (on average 1.1654676258992807) internal successors, (162), 150 states have internal predecessors, (162), 57 states have call successors, (57), 31 states have call predecessors, (57), 31 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-27 20:30:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2024-11-27 20:30:23,675 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 43 [2024-11-27 20:30:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:23,675 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2024-11-27 20:30:23,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-27 20:30:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2024-11-27 20:30:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:30:23,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:23,677 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:23,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:30:23,878 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:23,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash -964469844, now seen corresponding path program 1 times [2024-11-27 20:30:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391119659] [2024-11-27 20:30:23,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588390927] [2024-11-27 20:30:23,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:23,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:23,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:23,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:30:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:23,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 20:30:23,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:30:24,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 20:30:24,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391119659] [2024-11-27 20:30:24,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588390927] [2024-11-27 20:30:24,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588390927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:24,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:30:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2024-11-27 20:30:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313070136] [2024-11-27 20:30:24,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:24,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:24,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:24,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:24,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:24,813 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 20:30:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:25,655 INFO L93 Difference]: Finished difference Result 277 states and 342 transitions. [2024-11-27 20:30:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:30:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 48 [2024-11-27 20:30:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:25,657 INFO L225 Difference]: With dead ends: 277 [2024-11-27 20:30:25,658 INFO L226 Difference]: Without dead ends: 235 [2024-11-27 20:30:25,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:30:25,662 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:25,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 266 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:30:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-27 20:30:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 200. [2024-11-27 20:30:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 135 states have internal predecessors, (148), 43 states have call successors, (43), 28 states have call predecessors, (43), 27 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-27 20:30:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2024-11-27 20:30:25,721 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 48 [2024-11-27 20:30:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:25,721 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2024-11-27 20:30:25,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 20:30:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2024-11-27 20:30:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 20:30:25,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:25,722 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:25,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:25,925 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -392360138, now seen corresponding path program 1 times [2024-11-27 20:30:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304520999] [2024-11-27 20:30:25,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962609034] [2024-11-27 20:30:25,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:25,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:25,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:25,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:30:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:26,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 20:30:26,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:30:26,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 20:30:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304520999] [2024-11-27 20:30:26,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962609034] [2024-11-27 20:30:26,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962609034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:26,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:30:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-27 20:30:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852074244] [2024-11-27 20:30:26,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:26,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:26,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:26,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:26,666 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:30:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:27,097 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2024-11-27 20:30:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:30:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 57 [2024-11-27 20:30:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:27,099 INFO L225 Difference]: With dead ends: 220 [2024-11-27 20:30:27,099 INFO L226 Difference]: Without dead ends: 213 [2024-11-27 20:30:27,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:30:27,100 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:27,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:30:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-27 20:30:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 191. [2024-11-27 20:30:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 131 states have internal predecessors, (147), 34 states have call successors, (34), 28 states have call predecessors, (34), 27 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-27 20:30:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2024-11-27 20:30:27,149 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 57 [2024-11-27 20:30:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:27,149 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2024-11-27 20:30:27,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:30:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2024-11-27 20:30:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 20:30:27,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:27,151 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:27,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:27,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:27,352 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:27,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 547074059, now seen corresponding path program 1 times [2024-11-27 20:30:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:27,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511162783] [2024-11-27 20:30:27,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:30:27,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511162783] [2024-11-27 20:30:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511162783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682886045] [2024-11-27 20:30:27,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:27,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:27,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:30:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:27,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:30:27,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-27 20:30:27,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-27 20:30:27,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682886045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:27,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 13 [2024-11-27 20:30:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869515999] [2024-11-27 20:30:27,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:27,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:30:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:27,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:30:27,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:30:27,893 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-27 20:30:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:28,055 INFO L93 Difference]: Finished difference Result 217 states and 242 transitions. [2024-11-27 20:30:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:30:28,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 59 [2024-11-27 20:30:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:28,057 INFO L225 Difference]: With dead ends: 217 [2024-11-27 20:30:28,057 INFO L226 Difference]: Without dead ends: 197 [2024-11-27 20:30:28,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:30:28,058 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:28,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-27 20:30:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 98. [2024-11-27 20:30:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.106060606060606) internal successors, (73), 68 states have internal predecessors, (73), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:30:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2024-11-27 20:30:28,087 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 59 [2024-11-27 20:30:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:28,087 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2024-11-27 20:30:28,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-27 20:30:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2024-11-27 20:30:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 20:30:28,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:28,089 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:28,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:30:28,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:28,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:28,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -842483152, now seen corresponding path program 2 times [2024-11-27 20:30:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876181184] [2024-11-27 20:30:28,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:28,310 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:28,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-27 20:30:28,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:28,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876181184] [2024-11-27 20:30:28,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876181184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:28,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327146833] [2024-11-27 20:30:28,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:28,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:28,569 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:28,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:30:28,647 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:28,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:28,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:30:28,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 20:30:28,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-27 20:30:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327146833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:28,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:28,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2024-11-27 20:30:28,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709393232] [2024-11-27 20:30:28,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:28,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:30:28,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:28,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:30:28,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:30:28,969 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2024-11-27 20:30:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:29,324 INFO L93 Difference]: Finished difference Result 233 states and 258 transitions. [2024-11-27 20:30:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:30:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) Word has length 95 [2024-11-27 20:30:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:29,326 INFO L225 Difference]: With dead ends: 233 [2024-11-27 20:30:29,326 INFO L226 Difference]: Without dead ends: 224 [2024-11-27 20:30:29,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:30:29,327 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:29,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 158 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:30:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-27 20:30:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 212. [2024-11-27 20:30:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 144 states have (on average 1.0902777777777777) internal successors, (157), 146 states have internal predecessors, (157), 35 states have call successors, (35), 32 states have call predecessors, (35), 32 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-27 20:30:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 225 transitions. [2024-11-27 20:30:29,384 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 225 transitions. Word has length 95 [2024-11-27 20:30:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:29,385 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 225 transitions. [2024-11-27 20:30:29,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2024-11-27 20:30:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 225 transitions. [2024-11-27 20:30:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-27 20:30:29,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:29,387 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:29,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:29,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:30:29,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:29,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -279231760, now seen corresponding path program 3 times [2024-11-27 20:30:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:29,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626228850] [2024-11-27 20:30:29,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:29,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:29,712 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 20:30:29,712 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:30:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998527566] [2024-11-27 20:30:29,715 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:29,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:29,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:29,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:30:29,881 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 20:30:29,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:30:29,882 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:30:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:30:30,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:30:30,048 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:30:30,049 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:30:30,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:30,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:30:30,255 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:30,340 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:30:30,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:30:30 BoogieIcfgContainer [2024-11-27 20:30:30,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:30:30,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:30:30,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:30:30,347 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:30:30,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:12" (3/4) ... [2024-11-27 20:30:30,349 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 20:30:30,491 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 130. [2024-11-27 20:30:30,625 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:30:30,626 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:30:30,626 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:30:30,627 INFO L158 Benchmark]: Toolchain (without parser) took 18937.69ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 119.7MB in the beginning and 271.6MB in the end (delta: -151.9MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2024-11-27 20:30:30,628 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:30:30,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.61ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.3MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:30:30,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.84ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 107.0MB in the end (delta: 964.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:30:30,628 INFO L158 Benchmark]: Boogie Preprocessor took 41.44ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:30:30,629 INFO L158 Benchmark]: RCFGBuilder took 272.96ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 94.6MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:30:30,629 INFO L158 Benchmark]: TraceAbstraction took 18012.35ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 94.1MB in the beginning and 287.4MB in the end (delta: -193.3MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2024-11-27 20:30:30,629 INFO L158 Benchmark]: Witness Printer took 279.06ms. Allocated memory is still 419.4MB. Free memory was 287.4MB in the beginning and 271.6MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:30:30,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.61ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.3MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.84ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 107.0MB in the end (delta: 964.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.44ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.96ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 94.6MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18012.35ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 94.1MB in the beginning and 287.4MB in the end (delta: -193.3MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. * Witness Printer took 279.06ms. Allocated memory is still 419.4MB. Free memory was 287.4MB in the beginning and 271.6MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=12, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=12, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=12, b=1, counter=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=11, b=1, counter=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=10, b=1, counter=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=9, b=1, counter=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=8, b=1, counter=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=7, b=1, counter=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=6, b=1, counter=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=5, b=1, counter=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=4, b=1, counter=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=1, counter=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=2, b=1, counter=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=2, b=1, counter=11, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] COND FALSE !(counter++<10) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=11] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=11] [L13] reach_error() VAL [\old(cond)=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.9s, OverallIterations: 15, TraceHistogramMax: 31, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 323 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 2114 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1664 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1177 IncrementalHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 450 mSDtfsCounter, 1177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 913 GetRequests, 771 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=10, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 231 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1488 NumberOfCodeBlocks, 1488 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 1127 ConstructedInterpolants, 0 QuantifiedInterpolants, 3769 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 1481/1951 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:30:30,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ac0e5d-3426-4a3d-a8db-b8f4563c96f2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE