./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i --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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1 --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 bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:22:30,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:22:30,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:22:30,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:22:30,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:22:31,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:22:31,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:22:31,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:22:31,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:22:31,015 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:22:31,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:22:31,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:22:31,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:22:31,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:22:31,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:22:31,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:22:31,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:31,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:31,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:22:31,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:22:31,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:22:31,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:22:31,019 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1 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 -> bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b [2024-12-02 06:22:31,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:22:31,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:22:31,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:22:31,244 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:22:31,244 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:22:31,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:33,843 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/819745dd3/232571eb9ce748f8877e888860bbb1a9/FLAG1812d8ff5 [2024-12-02 06:22:34,031 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:22:34,032 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:34,039 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/819745dd3/232571eb9ce748f8877e888860bbb1a9/FLAG1812d8ff5 [2024-12-02 06:22:34,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/819745dd3/232571eb9ce748f8877e888860bbb1a9 [2024-12-02 06:22:34,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:22:34,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:22:34,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:22:34,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:22:34,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:22:34,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ccf73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34, skipping insertion in model container [2024-12-02 06:22:34,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:22:34,561 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2024-12-02 06:22:34,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:22:34,600 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:22:34,609 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2024-12-02 06:22:34,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:22:34,642 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:22:34,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34 WrapperNode [2024-12-02 06:22:34,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:22:34,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:22:34,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:22:34,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:22:34,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,681 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2024-12-02 06:22:34,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:22:34,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:22:34,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:22:34,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:22:34,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,706 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]. [2024-12-02 06:22:34,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:22:34,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:22:34,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:22:34,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:22:34,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (1/1) ... [2024-12-02 06:22:34,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:34,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:22:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:22:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:22:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:22:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:22:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:22:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:22:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:22:34,843 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:22:34,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:22:35,087 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-12-02 06:22:35,087 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:22:35,096 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:22:35,096 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:22:35,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:22:35 BoogieIcfgContainer [2024-12-02 06:22:35,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:22:35,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:22:35,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:22:35,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:22:35,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:22:34" (1/3) ... [2024-12-02 06:22:35,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf21103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:22:35, skipping insertion in model container [2024-12-02 06:22:35,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:34" (2/3) ... [2024-12-02 06:22:35,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf21103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:22:35, skipping insertion in model container [2024-12-02 06:22:35,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:22:35" (3/3) ... [2024-12-02 06:22:35,105 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:35,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:22:35,121 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-31.i that has 2 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:22:35,171 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:22:35,182 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;@21b6a4ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:22:35,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:22:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 06:22:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:22:35,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:35,195 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:35,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:35,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1120964836, now seen corresponding path program 1 times [2024-12-02 06:22:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:35,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069387182] [2024-12-02 06:22:35,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 06:22:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069387182] [2024-12-02 06:22:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069387182] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076449855] [2024-12-02 06:22:35,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:35,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:35,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:35,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:22:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:35,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:22:35,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 06:22:35,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:22:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076449855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:22:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 06:22:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365627125] [2024-12-02 06:22:35,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:35,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:22:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:35,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:22:35,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:22:35,552 INFO L87 Difference]: Start difference. First operand has 56 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:35,567 INFO L93 Difference]: Finished difference Result 105 states and 169 transitions. [2024-12-02 06:22:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:22:35,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2024-12-02 06:22:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:35,574 INFO L225 Difference]: With dead ends: 105 [2024-12-02 06:22:35,575 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 06:22:35,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:22:35,580 INFO L435 NwaCegarLoop]: 75 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, 75 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 [2024-12-02 06:22:35,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:22:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 06:22:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-12-02 06:22:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 06:22:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2024-12-02 06:22:35,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 77 [2024-12-02 06:22:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:35,609 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2024-12-02 06:22:35,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2024-12-02 06:22:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:22:35,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:35,611 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:35,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:22:35,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:35,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:35,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1718969566, now seen corresponding path program 1 times [2024-12-02 06:22:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:35,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65115390] [2024-12-02 06:22:35,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 06:22:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65115390] [2024-12-02 06:22:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65115390] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:36,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:22:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267994796] [2024-12-02 06:22:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:36,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:22:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:36,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:22:36,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:22:36,567 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:36,792 INFO L93 Difference]: Finished difference Result 155 states and 220 transitions. [2024-12-02 06:22:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:22:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 77 [2024-12-02 06:22:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:36,795 INFO L225 Difference]: With dead ends: 155 [2024-12-02 06:22:36,795 INFO L226 Difference]: Without dead ends: 106 [2024-12-02 06:22:36,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:22:36,796 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 71 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:36,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 267 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:22:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-12-02 06:22:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2024-12-02 06:22:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 67 states have internal predecessors, (88), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 06:22:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2024-12-02 06:22:36,813 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 77 [2024-12-02 06:22:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:36,813 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2024-12-02 06:22:36,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2024-12-02 06:22:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:22:36,815 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:36,815 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:36,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:22:36,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:36,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1895939360, now seen corresponding path program 1 times [2024-12-02 06:22:36,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:36,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172755544] [2024-12-02 06:22:36,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 06:22:37,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172755544] [2024-12-02 06:22:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172755544] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:22:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317550289] [2024-12-02 06:22:37,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:37,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:22:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:37,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:22:37,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:22:37,227 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:37,407 INFO L93 Difference]: Finished difference Result 193 states and 273 transitions. [2024-12-02 06:22:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:22:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 77 [2024-12-02 06:22:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:37,410 INFO L225 Difference]: With dead ends: 193 [2024-12-02 06:22:37,410 INFO L226 Difference]: Without dead ends: 108 [2024-12-02 06:22:37,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:22:37,411 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 60 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:37,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 346 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:22:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-12-02 06:22:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-12-02 06:22:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.318840579710145) internal successors, (91), 70 states have internal predecessors, (91), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 06:22:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2024-12-02 06:22:37,423 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 77 [2024-12-02 06:22:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:37,424 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2024-12-02 06:22:37,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2024-12-02 06:22:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:22:37,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:37,425 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:37,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:22:37,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:37,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:37,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1411409276, now seen corresponding path program 1 times [2024-12-02 06:22:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:37,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266441214] [2024-12-02 06:22:37,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 06:22:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266441214] [2024-12-02 06:22:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266441214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:22:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203576187] [2024-12-02 06:22:38,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:38,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:22:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:38,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:22:38,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:22:38,081 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:38,313 INFO L93 Difference]: Finished difference Result 197 states and 276 transitions. [2024-12-02 06:22:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:22:38,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 78 [2024-12-02 06:22:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:38,315 INFO L225 Difference]: With dead ends: 197 [2024-12-02 06:22:38,315 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 06:22:38,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:22:38,317 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 72 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:38,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 316 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:22:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 06:22:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2024-12-02 06:22:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 67 states have internal predecessors, (87), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 06:22:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 125 transitions. [2024-12-02 06:22:38,328 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 125 transitions. Word has length 78 [2024-12-02 06:22:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:38,328 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 125 transitions. [2024-12-02 06:22:38,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 125 transitions. [2024-12-02 06:22:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:22:38,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:38,330 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:38,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:22:38,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:38,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1018382266, now seen corresponding path program 1 times [2024-12-02 06:22:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863007892] [2024-12-02 06:22:38,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 06:22:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863007892] [2024-12-02 06:22:38,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863007892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:38,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:22:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432352528] [2024-12-02 06:22:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:38,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:22:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:38,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:22:38,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:22:38,647 INFO L87 Difference]: Start difference. First operand 88 states and 125 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:38,921 INFO L93 Difference]: Finished difference Result 190 states and 267 transitions. [2024-12-02 06:22:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:22:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 78 [2024-12-02 06:22:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:38,923 INFO L225 Difference]: With dead ends: 190 [2024-12-02 06:22:38,924 INFO L226 Difference]: Without dead ends: 105 [2024-12-02 06:22:38,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:22:38,925 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 45 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:38,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 411 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:22:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-12-02 06:22:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2024-12-02 06:22:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 64 states have internal predecessors, (83), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 06:22:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2024-12-02 06:22:38,936 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 78 [2024-12-02 06:22:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:38,936 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2024-12-02 06:22:38,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:22:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2024-12-02 06:22:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 06:22:38,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:38,938 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:38,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:22:38,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:38,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash -575500647, now seen corresponding path program 1 times [2024-12-02 06:22:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735339085] [2024-12-02 06:22:38,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:22:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892392201] [2024-12-02 06:22:38,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:38,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:38,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:22:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:39,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 06:22:39,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 06:22:39,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:39,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735339085] [2024-12-02 06:22:39,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:22:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892392201] [2024-12-02 06:22:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892392201] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:39,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:22:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-12-02 06:22:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823446902] [2024-12-02 06:22:39,511 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:39,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:22:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:39,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:22:39,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:22:39,512 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:39,813 INFO L93 Difference]: Finished difference Result 229 states and 321 transitions. [2024-12-02 06:22:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:22:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2024-12-02 06:22:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:39,815 INFO L225 Difference]: With dead ends: 229 [2024-12-02 06:22:39,815 INFO L226 Difference]: Without dead ends: 147 [2024-12-02 06:22:39,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:22:39,816 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:39,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 301 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:22:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-12-02 06:22:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2024-12-02 06:22:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 89 states have internal predecessors, (113), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 06:22:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 173 transitions. [2024-12-02 06:22:39,832 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 173 transitions. Word has length 79 [2024-12-02 06:22:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:39,832 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 173 transitions. [2024-12-02 06:22:39,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2024-12-02 06:22:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 06:22:39,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:39,834 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:39,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:22:40,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:40,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:40,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 125563931, now seen corresponding path program 1 times [2024-12-02 06:22:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:40,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812124191] [2024-12-02 06:22:40,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:22:40,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433415667] [2024-12-02 06:22:40,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:40,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:40,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:40,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:22:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:22:40,138 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 06:22:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:22:40,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 06:22:40,213 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 06:22:40,214 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 06:22:40,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:22:40,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:40,417 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:40,462 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:22:40,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:22:40 BoogieIcfgContainer [2024-12-02 06:22:40,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:22:40,466 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:22:40,466 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:22:40,466 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:22:40,467 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:22:35" (3/4) ... [2024-12-02 06:22:40,469 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 06:22:40,469 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:22:40,470 INFO L158 Benchmark]: Toolchain (without parser) took 6043.09ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 92.2MB in the beginning and 128.8MB in the end (delta: -36.6MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2024-12-02 06:22:40,470 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:22:40,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.47ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:22:40,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.35ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:22:40,471 INFO L158 Benchmark]: Boogie Preprocessor took 39.79ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:22:40,471 INFO L158 Benchmark]: RCFGBuilder took 373.89ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 57.0MB in the end (delta: 17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:22:40,471 INFO L158 Benchmark]: TraceAbstraction took 5367.02ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 56.4MB in the beginning and 130.7MB in the end (delta: -74.2MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-12-02 06:22:40,472 INFO L158 Benchmark]: Witness Printer took 3.22ms. Allocated memory is still 192.9MB. Free memory was 130.7MB in the beginning and 128.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:22:40,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.47ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.35ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.79ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.89ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 57.0MB in the end (delta: 17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5367.02ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 56.4MB in the beginning and 130.7MB in the end (delta: -74.2MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 3.22ms. Allocated memory is still 192.9MB. Free memory was 130.7MB in the beginning and 128.8MB in the end (delta: 1.9MB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 87, overapproximation of someBinaryDOUBLEComparisonOperation at line 79. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 200; [L23] unsigned char var_1_2 = 0; [L24] signed long int var_1_3 = 1107940323; [L25] unsigned char var_1_6 = 0; [L26] unsigned char var_1_7 = 0; [L27] unsigned char var_1_8 = 16; [L28] unsigned char var_1_9 = 16; [L29] unsigned short int var_1_10 = 4; [L30] double var_1_11 = 1000000.5; [L31] double var_1_12 = 1.25; [L32] signed long int last_1_var_1_1 = 200; [L33] unsigned char last_1_var_1_8 = 16; [L34] unsigned short int last_1_var_1_10 = 4; VAL [isInitial=0, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L91] isInitial = 1 [L92] FCALL initially() [L94] CALL updateLastVariables() [L82] last_1_var_1_1 = var_1_1 [L83] last_1_var_1_8 = var_1_8 [L84] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L94] RET updateLastVariables() [L95] CALL updateVariables() [L63] var_1_2 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L64] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L65] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L65] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L66] var_1_3 = __VERIFIER_nondet_long() [L67] CALL assume_abort_if_not(var_1_3 >= 1073741822) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L67] RET assume_abort_if_not(var_1_3 >= 1073741822) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L68] CALL assume_abort_if_not(var_1_3 <= 2147483646) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L68] RET assume_abort_if_not(var_1_3 <= 2147483646) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L69] var_1_6 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_7=0, var_1_8=16, var_1_9=16] [L70] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_7=0, var_1_8=16, var_1_9=16] [L71] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L71] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L72] var_1_7 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_8=16, var_1_9=16] [L73] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_8=16, var_1_9=16] [L74] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=16] [L74] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=16] [L75] var_1_9 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16] [L76] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16] [L77] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L77] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L78] var_1_12 = __VERIFIER_nondet_double() [L79] CALL assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L79] RET assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L95] RET updateVariables() [L96] CALL step() [L38] signed long int stepLocal_2 = last_1_var_1_8; [L39] signed long int stepLocal_1 = var_1_3 * last_1_var_1_8; VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_1=17179869152, stepLocal_2=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L40] COND TRUE stepLocal_1 >= last_1_var_1_1 [L41] var_1_10 = (2 + var_1_9) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_2=16, var_1_10=2, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L49] signed long int stepLocal_0 = last_1_var_1_10 / var_1_3; VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_0=0, stepLocal_2=16, var_1_10=2, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L50] COND FALSE !(stepLocal_0 >= (500 - last_1_var_1_10)) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_2=16, var_1_10=2, var_1_11=2000001/2, var_1_1=200, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L53] COND TRUE \read(var_1_2) [L54] var_1_1 = ((var_1_3 - var_1_10) - var_1_8) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_2=16, var_1_10=2, var_1_11=2000001/2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L60] var_1_11 = var_1_12 VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, stepLocal_2=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L96] RET step() [L97] CALL, EXPR property() [L87] EXPR ((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1)))) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L87] EXPR ((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1))) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L87] EXPR ((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1)))) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L87-L88] return (((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1))))) && (var_1_11 == ((double) var_1_12)) ; [L97] RET, EXPR property() [L97] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=2, var_1_11=2, var_1_12=2, var_1_1=1073741804, var_1_2=1, var_1_3=1073741822, var_1_6=1, var_1_7=1, var_1_8=16, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 349 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 1716 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1216 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 495 IncrementalHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 500 mSDtfsCounter, 495 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=6, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 99 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 780 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 536 ConstructedInterpolants, 1 QuantifiedInterpolants, 1381 SizeOfPredicates, 3 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 1496/1540 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 could not prove your program: unable to determine feasibility of some traces [2024-12-02 06:22:40,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1 --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 bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:22:42,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:22:42,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 06:22:42,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:22:42,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:22:42,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:22:42,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:22:42,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:22:42,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:22:42,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:22:42,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:22:42,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:22:42,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:22:42,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:22:42,489 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:22:42,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:22:42,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:22:42,491 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:22:42,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:42,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:42,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:22:42,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:22:42,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:22:42,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:22:42,493 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1 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 -> bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b [2024-12-02 06:22:42,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:22:42,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:22:42,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:22:42,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:22:42,736 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:22:42,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:45,423 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/f8e7bf186/5b2697e40da54ed793e2459eedf03f33/FLAGb24756ad3 [2024-12-02 06:22:45,619 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:22:45,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:45,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/f8e7bf186/5b2697e40da54ed793e2459eedf03f33/FLAGb24756ad3 [2024-12-02 06:22:45,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/data/f8e7bf186/5b2697e40da54ed793e2459eedf03f33 [2024-12-02 06:22:45,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:22:45,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:22:45,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:22:45,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:22:45,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:22:45,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:22:45" (1/1) ... [2024-12-02 06:22:45,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae5d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:45, skipping insertion in model container [2024-12-02 06:22:45,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:22:45" (1/1) ... [2024-12-02 06:22:45,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:22:46,106 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2024-12-02 06:22:46,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:22:46,147 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:22:46,154 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_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2024-12-02 06:22:46,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:22:46,180 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:22:46,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46 WrapperNode [2024-12-02 06:22:46,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:22:46,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:22:46,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:22:46,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:22:46,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,210 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 93 [2024-12-02 06:22:46,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:22:46,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:22:46,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:22:46,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:22:46,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,227 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]. [2024-12-02 06:22:46,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,232 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:22:46,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:22:46,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:22:46,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:22:46,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (1/1) ... [2024-12-02 06:22:46,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:22:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:46,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:22:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:22:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:22:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 06:22:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:22:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:22:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:22:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:22:46,361 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:22:46,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:22:46,608 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 06:22:46,608 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:22:46,617 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:22:46,617 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:22:46,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:22:46 BoogieIcfgContainer [2024-12-02 06:22:46,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:22:46,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:22:46,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:22:46,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:22:46,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:22:45" (1/3) ... [2024-12-02 06:22:46,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e0c992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:22:46, skipping insertion in model container [2024-12-02 06:22:46,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:22:46" (2/3) ... [2024-12-02 06:22:46,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e0c992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:22:46, skipping insertion in model container [2024-12-02 06:22:46,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:22:46" (3/3) ... [2024-12-02 06:22:46,633 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-31.i [2024-12-02 06:22:46,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:22:46,649 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-31.i that has 2 procedures, 43 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:22:46,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:22:46,705 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;@5136de2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:22:46,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:22:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 06:22:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:22:46,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:46,718 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:46,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:46,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 172654701, now seen corresponding path program 1 times [2024-12-02 06:22:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:22:46,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567877329] [2024-12-02 06:22:46,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:46,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:22:46,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:22:46,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:22:46,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-12-02 06:22:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:46,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:22:46,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 06:22:46,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:22:46,929 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:22:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567877329] [2024-12-02 06:22:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567877329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:46,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:22:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025445193] [2024-12-02 06:22:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:46,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:22:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:22:46,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:22:46,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:22:46,950 INFO L87 Difference]: Start difference. First operand has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:46,966 INFO L93 Difference]: Finished difference Result 79 states and 127 transitions. [2024-12-02 06:22:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:22:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2024-12-02 06:22:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:46,971 INFO L225 Difference]: With dead ends: 79 [2024-12-02 06:22:46,971 INFO L226 Difference]: Without dead ends: 39 [2024-12-02 06:22:46,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:22:46,976 INFO L435 NwaCegarLoop]: 54 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, 54 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 [2024-12-02 06:22:46,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:22:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-12-02 06:22:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-12-02 06:22:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 06:22:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2024-12-02 06:22:47,004 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 75 [2024-12-02 06:22:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:47,004 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2024-12-02 06:22:47,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:22:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2024-12-02 06:22:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:22:47,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:47,007 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:47,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-02 06:22:47,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:22:47,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:47,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728849, now seen corresponding path program 1 times [2024-12-02 06:22:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:22:47,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324735844] [2024-12-02 06:22:47,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:47,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:22:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:22:47,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:22:47,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-12-02 06:22:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:47,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 06:22:47,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 06:22:48,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:51,461 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:22:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324735844] [2024-12-02 06:22:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324735844] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [257766062] [2024-12-02 06:22:51,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:51,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:22:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:22:51,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:22:51,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-12-02 06:22:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:51,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:22:51,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 06:22:52,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:53,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [257766062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:53,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:22:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-12-02 06:22:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021284650] [2024-12-02 06:22:53,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:53,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:22:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:22:53,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:22:53,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:22:53,726 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-12-02 06:22:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:55,997 INFO L93 Difference]: Finished difference Result 136 states and 182 transitions. [2024-12-02 06:22:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:22:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 75 [2024-12-02 06:22:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:56,002 INFO L225 Difference]: With dead ends: 136 [2024-12-02 06:22:56,002 INFO L226 Difference]: Without dead ends: 100 [2024-12-02 06:22:56,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=376, Invalid=884, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:22:56,003 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 74 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:56,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 318 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:22:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-02 06:22:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2024-12-02 06:22:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 06:22:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2024-12-02 06:22:56,016 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 75 [2024-12-02 06:22:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:56,016 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2024-12-02 06:22:56,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-12-02 06:22:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2024-12-02 06:22:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:22:56,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:56,017 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:56,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-12-02 06:22:56,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-12-02 06:22:56,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 06:22:56,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:56,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:56,419 INFO L85 PathProgramCache]: Analyzing trace with hash 109278513, now seen corresponding path program 1 times [2024-12-02 06:22:56,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:22:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160764651] [2024-12-02 06:22:56,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:56,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:22:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:22:56,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:22:56,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-12-02 06:22:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:56,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:22:56,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 06:23:07,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:43,905 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:23:43,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160764651] [2024-12-02 06:23:43,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160764651] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:23:43,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1101923801] [2024-12-02 06:23:43,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:43,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:23:43,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:23:43,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:23:43,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-02 06:23:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:44,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:23:44,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:24:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:24:01,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:24:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 06:24:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1101923801] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:24:38,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:24:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18, 16] total 43 [2024-12-02 06:24:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006704214] [2024-12-02 06:24:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:24:38,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 06:24:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:24:38,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 06:24:38,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1709, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 06:24:38,526 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:24:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:24:47,745 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2024-12-02 06:24:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:24:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 75 [2024-12-02 06:24:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:24:47,751 INFO L225 Difference]: With dead ends: 120 [2024-12-02 06:24:47,751 INFO L226 Difference]: Without dead ends: 118 [2024-12-02 06:24:47,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=495, Invalid=2367, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 06:24:47,754 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 119 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:24:47,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 218 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:24:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-02 06:24:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2024-12-02 06:24:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 06:24:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2024-12-02 06:24:47,771 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 75 [2024-12-02 06:24:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:24:47,772 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2024-12-02 06:24:47,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:24:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2024-12-02 06:24:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:24:47,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:24:47,773 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:24:47,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:24:47,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-12-02 06:24:48,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:24:48,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:24:48,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:24:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash 751247868, now seen corresponding path program 1 times [2024-12-02 06:24:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:24:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464940060] [2024-12-02 06:24:48,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:24:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:24:48,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:24:48,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-02 06:24:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:48,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:24:48,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:24:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:24:56,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:25:35,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:25:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464940060] [2024-12-02 06:25:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464940060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:25:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2131398774] [2024-12-02 06:25:35,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:25:35,695 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:25:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:25:35,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:25:35,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 06:25:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:25:35,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 06:25:35,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:25:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:25:44,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:26:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 06:26:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2131398774] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:26:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:26:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16, 17] total 39 [2024-12-02 06:26:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666280702] [2024-12-02 06:26:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:26:20,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:26:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:26:20,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:26:20,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 06:26:20,890 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:26:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:26:39,749 INFO L93 Difference]: Finished difference Result 126 states and 157 transitions. [2024-12-02 06:26:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 06:26:39,754 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 76 [2024-12-02 06:26:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:26:39,755 INFO L225 Difference]: With dead ends: 126 [2024-12-02 06:26:39,755 INFO L226 Difference]: Without dead ends: 124 [2024-12-02 06:26:39,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=563, Invalid=2743, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:26:39,756 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 119 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:26:39,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 245 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 06:26:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-12-02 06:26:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 97. [2024-12-02 06:26:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 06:26:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2024-12-02 06:26:39,767 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 76 [2024-12-02 06:26:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:26:39,767 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2024-12-02 06:26:39,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:26:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2024-12-02 06:26:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:26:39,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:39,768 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:26:39,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-12-02 06:26:39,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-12-02 06:26:40,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:26:40,169 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:40,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash 808506170, now seen corresponding path program 1 times [2024-12-02 06:26:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:26:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257065761] [2024-12-02 06:26:40,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:40,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:26:40,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:26:40,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:26:40,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-12-02 06:26:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:40,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:26:40,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:26:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:26:48,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:27:24,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:27:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257065761] [2024-12-02 06:27:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257065761] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:27:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1317621436] [2024-12-02 06:27:24,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:24,703 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:27:24,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:27:24,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:27:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-12-02 06:27:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:24,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:27:24,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:27:34,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 06:28:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1317621436] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:28:08,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:28:08,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16, 17] total 37 [2024-12-02 06:28:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146339585] [2024-12-02 06:28:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:28:08,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:28:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:28:08,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:28:08,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:28:08,910 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:28:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:19,443 INFO L93 Difference]: Finished difference Result 122 states and 153 transitions. [2024-12-02 06:28:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:28:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 76 [2024-12-02 06:28:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:19,450 INFO L225 Difference]: With dead ends: 122 [2024-12-02 06:28:19,450 INFO L226 Difference]: Without dead ends: 120 [2024-12-02 06:28:19,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=404, Invalid=1948, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:28:19,451 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 109 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:19,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 209 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 06:28:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-12-02 06:28:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2024-12-02 06:28:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 06:28:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-12-02 06:28:19,460 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 76 [2024-12-02 06:28:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:19,461 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-12-02 06:28:19,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:28:19,461 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-12-02 06:28:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:28:19,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:19,462 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:19,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-12-02 06:28:19,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-12-02 06:28:19,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 06:28:19,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:19,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1995753786, now seen corresponding path program 1 times [2024-12-02 06:28:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:28:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934825392] [2024-12-02 06:28:19,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:19,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:28:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:28:19,864 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:28:19,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-12-02 06:28:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:19,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:28:19,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 06:28:20,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:28:20,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:28:20,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934825392] [2024-12-02 06:28:20,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934825392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:28:20,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:28:20,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:28:20,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676123535] [2024-12-02 06:28:20,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:28:20,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:28:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:28:20,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:28:20,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:28:20,303 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:28:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:20,530 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2024-12-02 06:28:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:28:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 76 [2024-12-02 06:28:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:20,533 INFO L225 Difference]: With dead ends: 221 [2024-12-02 06:28:20,533 INFO L226 Difference]: Without dead ends: 166 [2024-12-02 06:28:20,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:28:20,534 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 66 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:20,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 176 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:28:20,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-12-02 06:28:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 144. [2024-12-02 06:28:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 101 states have internal predecessors, (117), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2024-12-02 06:28:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2024-12-02 06:28:20,561 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 76 [2024-12-02 06:28:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:20,561 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2024-12-02 06:28:20,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:28:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2024-12-02 06:28:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:28:20,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:20,563 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:20,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-12-02 06:28:20,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:28:20,763 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:20,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1619155140, now seen corresponding path program 1 times [2024-12-02 06:28:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:28:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124784323] [2024-12-02 06:28:20,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:20,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:28:20,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:28:20,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:28:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-12-02 06:28:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:20,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:28:20,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:28:26,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:29:19,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:29:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124784323] [2024-12-02 06:29:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124784323] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:29:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175528777] [2024-12-02 06:29:19,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:29:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:29:19,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:29:19,016 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:29:19,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-12-02 06:29:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:29:19,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 06:29:19,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:29:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:29:25,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:30:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 06:30:06,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1175528777] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:06,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:30:06,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 17] total 39 [2024-12-02 06:30:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820995787] [2024-12-02 06:30:06,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:06,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:30:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:30:06,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:30:06,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1477, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:30:06,044 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:30:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:18,218 INFO L93 Difference]: Finished difference Result 199 states and 251 transitions. [2024-12-02 06:30:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:30:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 76 [2024-12-02 06:30:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:18,224 INFO L225 Difference]: With dead ends: 199 [2024-12-02 06:30:18,224 INFO L226 Difference]: Without dead ends: 197 [2024-12-02 06:30:18,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=429, Invalid=1827, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 06:30:18,225 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 74 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:18,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 253 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 06:30:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-12-02 06:30:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 147. [2024-12-02 06:30:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 105 states have internal predecessors, (126), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-12-02 06:30:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2024-12-02 06:30:18,253 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 76 [2024-12-02 06:30:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:18,253 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2024-12-02 06:30:18,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:30:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2024-12-02 06:30:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:30:18,254 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:18,254 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:18,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-12-02 06:30:18,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-12-02 06:30:18,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 06:30:18,655 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:18,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1290587823, now seen corresponding path program 1 times [2024-12-02 06:30:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:30:18,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189921660] [2024-12-02 06:30:18,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:18,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:30:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:30:18,658 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:30:18,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-12-02 06:30:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:18,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:30:18,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:30:25,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:20,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:31:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189921660] [2024-12-02 06:31:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189921660] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2140987168] [2024-12-02 06:31:20,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:31:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:31:20,137 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:31:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-12-02 06:31:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:20,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 06:31:20,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:31:27,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:52,665 WARN L286 SmtUtils]: Spent 32.77s on a formula simplification. DAG size of input: 451 DAG size of output: 451 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:33:42,447 WARN L286 SmtUtils]: Spent 18.08s on a formula simplification that was a NOOP. DAG size: 450 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:34:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 06:34:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2140987168] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:34:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18, 18] total 43 [2024-12-02 06:34:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810447106] [2024-12-02 06:34:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:10,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:34:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:34:10,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:34:10,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:34:10,712 INFO L87 Difference]: Start difference. First operand 147 states and 196 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:34:37,601 WARN L286 SmtUtils]: Spent 17.33s on a formula simplification. DAG size of input: 479 DAG size of output: 479 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:34:55,861 WARN L286 SmtUtils]: Spent 17.05s on a formula simplification that was a NOOP. DAG size: 455 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:35:15,816 WARN L286 SmtUtils]: Spent 19.04s on a formula simplification that was a NOOP. DAG size: 483 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:35:34,038 WARN L286 SmtUtils]: Spent 17.17s on a formula simplification that was a NOOP. DAG size: 455 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:35:53,807 WARN L286 SmtUtils]: Spent 18.93s on a formula simplification that was a NOOP. DAG size: 487 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:36:13,697 WARN L286 SmtUtils]: Spent 18.62s on a formula simplification that was a NOOP. DAG size: 487 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:36:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:15,271 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2024-12-02 06:36:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:36:15,276 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 77 [2024-12-02 06:36:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:15,279 INFO L225 Difference]: With dead ends: 205 [2024-12-02 06:36:15,279 INFO L226 Difference]: Without dead ends: 203 [2024-12-02 06:36:15,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 200.5s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:36:15,281 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 119 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:15,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 205 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 06:36:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-12-02 06:36:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 147. [2024-12-02 06:36:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 105 states have internal predecessors, (126), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-12-02 06:36:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2024-12-02 06:36:15,304 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 77 [2024-12-02 06:36:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:15,305 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2024-12-02 06:36:15,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:36:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2024-12-02 06:36:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:36:15,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:15,306 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:15,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-12-02 06:36:15,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-12-02 06:36:15,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:36:15,706 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:36:15,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1233329521, now seen corresponding path program 1 times [2024-12-02 06:36:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:36:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207631254] [2024-12-02 06:36:15,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:15,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 06:36:15,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:36:15,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 06:36:15,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-12-02 06:36:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:15,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:36:15,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:36:22,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:27,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:37:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207631254] [2024-12-02 06:37:27,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207631254] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551313533] [2024-12-02 06:37:27,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:37:27,379 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 06:37:27,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 06:37:27,381 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 06:37:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c3248e-4a93-47e7-8f3b-eb5b95b1f0c3/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-12-02 06:37:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:27,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:37:27,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 06:37:34,784 INFO L312 TraceCheckSpWp]: Computing backward predicates...