./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 5cfd8244917467985e1ec9aab123eb53d7984fa345597a11e6475c4a60dfdb5a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:00:10,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:00:10,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 09:00:10,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:00:10,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:00:10,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:00:10,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:00:10,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:00:10,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:00:10,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:00:10,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:00:10,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:00:10,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:00:10,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:00:10,658 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:00:10,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:00:10,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:00:10,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:00:10,659 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:00:10,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:10,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:10,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:00:10,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:00:10,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:00:10,661 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 -> 5cfd8244917467985e1ec9aab123eb53d7984fa345597a11e6475c4a60dfdb5a [2024-12-02 09:00:10,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:00:10,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:00:10,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:00:10,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:00:10,903 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:00:10,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:13,543 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/95954719f/d8c427a84cca46fd99f083040c9b8e6a/FLAG119c42b34 [2024-12-02 09:00:13,786 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:00:13,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:13,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/95954719f/d8c427a84cca46fd99f083040c9b8e6a/FLAG119c42b34 [2024-12-02 09:00:14,116 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/95954719f/d8c427a84cca46fd99f083040c9b8e6a [2024-12-02 09:00:14,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:00:14,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:00:14,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:00:14,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:00:14,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:00:14,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7e1ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14, skipping insertion in model container [2024-12-02 09:00:14,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:00:14,232 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i[915,928] [2024-12-02 09:00:14,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:00:14,274 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:00:14,281 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i[915,928] [2024-12-02 09:00:14,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:00:14,306 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:00:14,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14 WrapperNode [2024-12-02 09:00:14,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:00:14,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:00:14,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:00:14,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:00:14,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,338 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2024-12-02 09:00:14,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:00:14,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:00:14,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:00:14,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:00:14,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,364 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 09:00:14,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,370 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:00:14,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:00:14,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:00:14,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:00:14,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (1/1) ... [2024-12-02 09:00:14,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:14,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:00:14,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:00:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:00:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 09:00:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 09:00:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 09:00:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:00:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:00:14,497 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:00:14,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:00:14,740 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-12-02 09:00:14,740 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:00:14,749 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:00:14,749 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 09:00:14,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:00:14 BoogieIcfgContainer [2024-12-02 09:00:14,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:00:14,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:00:14,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:00:14,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:00:14,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:00:14" (1/3) ... [2024-12-02 09:00:14,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc65256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:00:14, skipping insertion in model container [2024-12-02 09:00:14,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:14" (2/3) ... [2024-12-02 09:00:14,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc65256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:00:14, skipping insertion in model container [2024-12-02 09:00:14,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:00:14" (3/3) ... [2024-12-02 09:00:14,757 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:14,771 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:00:14,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-64.i that has 2 procedures, 54 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 09:00:14,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:00:14,839 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;@3c98cb78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:00:14,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 09:00:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 09:00:14,851 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:14,851 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:14,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -531792171, now seen corresponding path program 1 times [2024-12-02 09:00:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:00:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803389618] [2024-12-02 09:00:14,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:00:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-12-02 09:00:15,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:00:15,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803389618] [2024-12-02 09:00:15,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803389618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:15,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908246336] [2024-12-02 09:00:15,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:15,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:15,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:00:15,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 09:00:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:15,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 09:00:15,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-12-02 09:00:15,184 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:00:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908246336] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:00:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:00:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 09:00:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663677101] [2024-12-02 09:00:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:00:15,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 09:00:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:00:15,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 09:00:15,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 09:00:15,206 INFO L87 Difference]: Start difference. First operand has 54 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:15,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:15,224 INFO L93 Difference]: Finished difference Result 99 states and 160 transitions. [2024-12-02 09:00:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 09:00:15,225 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2024-12-02 09:00:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:15,230 INFO L225 Difference]: With dead ends: 99 [2024-12-02 09:00:15,231 INFO L226 Difference]: Without dead ends: 48 [2024-12-02 09:00:15,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 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 09:00:15,235 INFO L435 NwaCegarLoop]: 67 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, 67 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 09:00:15,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:00:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-12-02 09:00:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-12-02 09:00:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2024-12-02 09:00:15,264 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 82 [2024-12-02 09:00:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:15,264 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2024-12-02 09:00:15,265 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2024-12-02 09:00:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 09:00:15,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:15,268 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:15,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 09:00:15,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 09:00:15,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1140243371, now seen corresponding path program 1 times [2024-12-02 09:00:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:00:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222270479] [2024-12-02 09:00:15,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:00:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 09:00:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:00:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222270479] [2024-12-02 09:00:16,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222270479] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:00:16,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:00:16,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:00:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476992207] [2024-12-02 09:00:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:00:16,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:00:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:00:16,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:00:16,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:00:16,088 INFO L87 Difference]: Start difference. First operand 48 states and 67 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 09:00:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:16,397 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2024-12-02 09:00:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:00:16,397 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 82 [2024-12-02 09:00:16,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:16,399 INFO L225 Difference]: With dead ends: 153 [2024-12-02 09:00:16,399 INFO L226 Difference]: Without dead ends: 108 [2024-12-02 09:00:16,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 09:00:16,401 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 137 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 09:00:16,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 196 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 09:00:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-12-02 09:00:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2024-12-02 09:00:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 54 states have internal predecessors, (67), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 09:00:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2024-12-02 09:00:16,423 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 82 [2024-12-02 09:00:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:16,423 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2024-12-02 09:00:16,423 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 09:00:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2024-12-02 09:00:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 09:00:16,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:16,425 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:16,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 09:00:16,425 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:16,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash -385616337, now seen corresponding path program 1 times [2024-12-02 09:00:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:00:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544403148] [2024-12-02 09:00:16,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:16,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:00:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 09:00:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977755516] [2024-12-02 09:00:16,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:16,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:16,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:16,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:00:16,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 09:00:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:16,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 09:00:16,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 09:00:16,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 09:00:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:00:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544403148] [2024-12-02 09:00:17,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 09:00:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977755516] [2024-12-02 09:00:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977755516] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:17,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:00:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 09:00:17,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859737772] [2024-12-02 09:00:17,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:00:17,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:00:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:00:17,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:00:17,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:00:17,108 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 09:00:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:17,426 INFO L93 Difference]: Finished difference Result 147 states and 203 transitions. [2024-12-02 09:00:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:00:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2024-12-02 09:00:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:17,430 INFO L225 Difference]: With dead ends: 147 [2024-12-02 09:00:17,430 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 09:00:17,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 09:00:17,431 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 23 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:00:17,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 146 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 09:00:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 09:00:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2024-12-02 09:00:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 09:00:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2024-12-02 09:00:17,449 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 83 [2024-12-02 09:00:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:17,449 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2024-12-02 09:00:17,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 09:00:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2024-12-02 09:00:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 09:00:17,450 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:17,451 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:17,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 09:00:17,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:17,651 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:17,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1389391025, now seen corresponding path program 1 times [2024-12-02 09:00:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:00:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794354587] [2024-12-02 09:00:17,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:17,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:00:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 09:00:17,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576811819] [2024-12-02 09:00:17,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:17,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:17,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:00:17,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 09:00:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 09:00:17,751 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 09:00:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 09:00:17,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 09:00:17,815 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 09:00:17,816 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 09:00:17,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 09:00:18,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:18,019 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 09:00:18,057 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 09:00:18,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:00:18 BoogieIcfgContainer [2024-12-02 09:00:18,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 09:00:18,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 09:00:18,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 09:00:18,061 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 09:00:18,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:00:14" (3/4) ... [2024-12-02 09:00:18,063 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 09:00:18,063 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 09:00:18,064 INFO L158 Benchmark]: Toolchain (without parser) took 3944.71ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 60.2MB in the end (delta: 58.4MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2024-12-02 09:00:18,064 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:00:18,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.27ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.0MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 09:00:18,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.08ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 103.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 09:00:18,064 INFO L158 Benchmark]: Boogie Preprocessor took 40.80ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 99.8MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:00:18,065 INFO L158 Benchmark]: RCFGBuilder took 369.73ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 81.6MB in the end (delta: 18.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 09:00:18,065 INFO L158 Benchmark]: TraceAbstraction took 3308.64ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 60.3MB in the end (delta: 20.7MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-12-02 09:00:18,065 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 17.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:00:18,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.27ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.0MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.08ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 103.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.80ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 99.8MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.73ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 81.6MB in the end (delta: 18.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3308.64ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 60.3MB in the end (delta: 20.7MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 17.7kB). 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 someBinaryFLOATComparisonOperation at line 82, overapproximation of someBinaryDOUBLEComparisonOperation at line 64, overapproximation of someBinaryDOUBLEComparisonOperation at line 82. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 0.9; [L23] unsigned long int var_1_3 = 2941876006; [L24] double var_1_5 = 127.422; [L25] unsigned short int var_1_6 = 10; [L26] unsigned char var_1_7 = 1; [L27] unsigned long int var_1_9 = 4; [L28] unsigned short int var_1_11 = 44699; [L29] signed short int var_1_13 = 2; [L30] unsigned char var_1_15 = 0; [L31] unsigned char var_1_16 = 16; [L32] float var_1_17 = 8.125; VAL [isInitial=0, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2941876006, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L86] isInitial = 1 [L87] FCALL initially() [L89] FCALL updateLastVariables() [L90] CALL updateVariables() [L60] var_1_3 = __VERIFIER_nondet_ulong() [L61] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L61] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L62] CALL assume_abort_if_not(var_1_3 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L62] RET assume_abort_if_not(var_1_3 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L63] var_1_5 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=1, var_1_9=4] [L64] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=1, var_1_9=4] [L65] var_1_7 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_9=4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_9=4] [L66] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_9=4] [L67] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=4] [L67] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=4] [L68] var_1_9 = __VERIFIER_nondet_ulong() [L69] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L69] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L70] CALL assume_abort_if_not(var_1_9 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L70] RET assume_abort_if_not(var_1_9 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0] [L71] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L71] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L72] var_1_11 = __VERIFIER_nondet_ushort() [L73] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L73] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L74] CALL assume_abort_if_not(var_1_11 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L74] RET assume_abort_if_not(var_1_11 <= 65534) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L75] var_1_16 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L76] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L77] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L77] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483647, var_1_6=10, var_1_7=0, var_1_9=1] [L90] RET updateVariables() [L91] CALL step() [L36] var_1_15 = var_1_16 [L37] var_1_17 = var_1_5 VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=9/10, var_1_3=2147483647, var_1_5=2, var_1_6=10, var_1_7=0, var_1_9=1] [L38] EXPR var_1_15 & var_1_15 VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=9/10, var_1_3=2147483647, var_1_5=2, var_1_6=10, var_1_7=0, var_1_9=1] [L38] unsigned long int stepLocal_2 = var_1_3 * (var_1_15 & var_1_15); [L39] COND FALSE !(\read(var_1_7)) [L46] var_1_6 = (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1) VAL [isInitial=1, stepLocal_2=0, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=9/10, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L48] var_1_13 = var_1_15 [L49] signed long int stepLocal_1 = var_1_6 * var_1_15; [L50] unsigned char stepLocal_0 = var_1_15; VAL [isInitial=1, stepLocal_0=0, stepLocal_1=0, stepLocal_2=0, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=9/10, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L51] COND TRUE stepLocal_0 <= (var_1_3 - var_1_6) VAL [isInitial=1, stepLocal_1=0, stepLocal_2=0, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=9/10, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L52] COND FALSE !(var_1_3 < stepLocal_1) [L55] var_1_1 = var_1_5 VAL [isInitial=1, stepLocal_2=0, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=2, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L91] RET step() [L92] CALL, EXPR property() [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) VAL [isInitial=1, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=2, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L82-L83] return (((((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))))) && (var_1_13 == ((signed short int) var_1_15))) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((float) var_1_5)) ; [L92] RET, EXPR property() [L92] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=2, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] [L19] reach_error() VAL [isInitial=1, var_1_11=32767, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=2, var_1_1=2, var_1_3=2147483647, var_1_5=2, var_1_6=1, var_1_7=0, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 409 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 205 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 204 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 3 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 407 ConstructedInterpolants, 3 QuantifiedInterpolants, 881 SizeOfPredicates, 4 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 1265/1320 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 09:00:18,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 5cfd8244917467985e1ec9aab123eb53d7984fa345597a11e6475c4a60dfdb5a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:00:19,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:00:20,033 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 09:00:20,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:00:20,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:00:20,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:00:20,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:00:20,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:00:20,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:00:20,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:00:20,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:00:20,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:00:20,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:00:20,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:00:20,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:00:20,065 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:00:20,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:20,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:20,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 09:00:20,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:00:20,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:00:20,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:00:20,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:00:20,067 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 -> 5cfd8244917467985e1ec9aab123eb53d7984fa345597a11e6475c4a60dfdb5a [2024-12-02 09:00:20,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:00:20,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:00:20,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:00:20,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:00:20,309 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:00:20,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:22,975 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/28cc7c692/3fbc7d85a86a4c14bd7edeb290cdbd9d/FLAGd545566a2 [2024-12-02 09:00:23,155 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:00:23,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:23,162 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/28cc7c692/3fbc7d85a86a4c14bd7edeb290cdbd9d/FLAGd545566a2 [2024-12-02 09:00:23,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/data/28cc7c692/3fbc7d85a86a4c14bd7edeb290cdbd9d [2024-12-02 09:00:23,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:00:23,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:00:23,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:00:23,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:00:23,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:00:23,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba29b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23, skipping insertion in model container [2024-12-02 09:00:23,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:00:23,299 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i[915,928] [2024-12-02 09:00:23,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:00:23,345 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:00:23,354 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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-64.i[915,928] [2024-12-02 09:00:23,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:00:23,386 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:00:23,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23 WrapperNode [2024-12-02 09:00:23,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:00:23,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:00:23,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:00:23,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:00:23,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,419 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2024-12-02 09:00:23,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:00:23,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:00:23,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:00:23,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:00:23,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,439 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 09:00:23,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:00:23,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:00:23,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:00:23,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:00:23,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (1/1) ... [2024-12-02 09:00:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:00:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:23,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:00:23,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:00:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:00:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 09:00:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 09:00:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 09:00:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:00:23,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:00:23,562 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:00:23,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:00:24,030 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 09:00:24,031 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:00:24,039 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:00:24,040 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 09:00:24,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:00:24 BoogieIcfgContainer [2024-12-02 09:00:24,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:00:24,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:00:24,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:00:24,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:00:24,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:00:23" (1/3) ... [2024-12-02 09:00:24,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e4a4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:00:24, skipping insertion in model container [2024-12-02 09:00:24,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:00:23" (2/3) ... [2024-12-02 09:00:24,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e4a4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:00:24, skipping insertion in model container [2024-12-02 09:00:24,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:00:24" (3/3) ... [2024-12-02 09:00:24,056 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-64.i [2024-12-02 09:00:24,071 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:00:24,072 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-64.i that has 2 procedures, 42 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 09:00:24,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:00:24,126 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;@135e6581, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:00:24,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 09:00:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 28 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 09:00:24,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:24,136 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:24,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:24,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1855080281, now seen corresponding path program 1 times [2024-12-02 09:00:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:00:24,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325706299] [2024-12-02 09:00:24,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:24,150 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 09:00:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:00:24,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:24,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:24,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 09:00:24,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-12-02 09:00:24,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:00:24,376 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:00:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325706299] [2024-12-02 09:00:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325706299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:00:24,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:00:24,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 09:00:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010301984] [2024-12-02 09:00:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:00:24,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 09:00:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:00:24,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 09:00:24,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 09:00:24,397 INFO L87 Difference]: Start difference. First operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 28 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:24,415 INFO L93 Difference]: Finished difference Result 77 states and 126 transitions. [2024-12-02 09:00:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 09:00:24,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2024-12-02 09:00:24,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:24,421 INFO L225 Difference]: With dead ends: 77 [2024-12-02 09:00:24,422 INFO L226 Difference]: Without dead ends: 38 [2024-12-02 09:00:24,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 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 09:00:24,427 INFO L435 NwaCegarLoop]: 53 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, 53 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 09:00:24,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:00:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-12-02 09:00:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-12-02 09:00:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2024-12-02 09:00:24,459 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 78 [2024-12-02 09:00:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:24,460 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2024-12-02 09:00:24,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-12-02 09:00:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 09:00:24,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:24,463 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:24,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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)] Forceful destruction successful, exit code 0 [2024-12-02 09:00:24,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:24,664 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:24,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1041026265, now seen corresponding path program 1 times [2024-12-02 09:00:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:00:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668943934] [2024-12-02 09:00:24,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:24,665 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 09:00:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:00:24,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:24,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:24,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 09:00:24,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 09:00:25,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:25,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:00:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668943934] [2024-12-02 09:00:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668943934] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1900527969] [2024-12-02 09:00:25,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 09:00:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 09:00:25,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 09:00:25,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-12-02 09:00:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:25,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 09:00:25,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 09:00:26,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1900527969] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:26,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 09:00:26,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-12-02 09:00:26,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066035231] [2024-12-02 09:00:26,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 09:00:26,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 09:00:26,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:00:26,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 09:00:26,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:00:26,057 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:26,854 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-12-02 09:00:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 09:00:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2024-12-02 09:00:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:26,863 INFO L225 Difference]: With dead ends: 90 [2024-12-02 09:00:26,863 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 09:00:26,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:00:26,864 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:00:26,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 89 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 09:00:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 09:00:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2024-12-02 09:00:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2024-12-02 09:00:26,870 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 78 [2024-12-02 09:00:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:26,870 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2024-12-02 09:00:26,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2024-12-02 09:00:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 09:00:26,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:26,872 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:26,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:27,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-12-02 09:00:27,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 09:00:27,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1971482828, now seen corresponding path program 1 times [2024-12-02 09:00:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:00:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733996821] [2024-12-02 09:00:27,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:27,274 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 09:00:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:00:27,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:27,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:27,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 09:00:27,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 09:00:27,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:27,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:00:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733996821] [2024-12-02 09:00:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733996821] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627208650] [2024-12-02 09:00:27,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:27,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 09:00:27,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 09:00:27,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 09:00:27,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-02 09:00:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:28,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 09:00:28,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 09:00:28,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627208650] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:28,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 09:00:28,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-12-02 09:00:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37169194] [2024-12-02 09:00:28,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 09:00:28,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 09:00:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:00:28,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 09:00:28,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:00:28,506 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:29,853 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2024-12-02 09:00:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 09:00:29,859 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2024-12-02 09:00:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:29,860 INFO L225 Difference]: With dead ends: 83 [2024-12-02 09:00:29,860 INFO L226 Difference]: Without dead ends: 44 [2024-12-02 09:00:29,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:00:29,862 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:00:29,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 99 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 09:00:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-12-02 09:00:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-12-02 09:00:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 09:00:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-12-02 09:00:29,869 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 79 [2024-12-02 09:00:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:29,870 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-12-02 09:00:29,870 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 09:00:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-12-02 09:00:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 09:00:29,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:29,871 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:29,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:30,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-12-02 09:00:30,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 09:00:30,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:30,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1973329870, now seen corresponding path program 1 times [2024-12-02 09:00:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:00:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332875670] [2024-12-02 09:00:30,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:30,273 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 09:00:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:00:30,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:30,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:00:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:30,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 09:00:30,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 09:00:50,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:01:51,327 WARN L286 SmtUtils]: Spent 11.24s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 09:02:29,328 WARN L286 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 09:03:20,837 WARN L286 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 09:04:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 09:04:00,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:04:00,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332875670] [2024-12-02 09:04:00,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332875670] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:04:00,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 09:04:00,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-12-02 09:04:00,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799133826] [2024-12-02 09:04:00,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 09:04:00,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 09:04:00,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:04:00,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 09:04:00,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-12-02 09:04:00,042 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 09:04:06,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:29,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:38,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:39,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:42,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:43,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:04:45,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:02,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:09,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:13,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:17,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:23,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:05:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:05:25,351 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2024-12-02 09:05:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 09:05:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 79 [2024-12-02 09:05:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:05:25,357 INFO L225 Difference]: With dead ends: 83 [2024-12-02 09:05:25,357 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 09:05:25,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 156.4s TimeCoverageRelationStatistics Valid=267, Invalid=725, Unknown=0, NotChecked=0, Total=992 [2024-12-02 09:05:25,358 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 135 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:05:25,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 217 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 48.4s Time] [2024-12-02 09:05:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 09:05:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-12-02 09:05:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 45 states have internal predecessors, (47), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 09:05:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-12-02 09:05:25,365 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 79 [2024-12-02 09:05:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:05:25,366 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-12-02 09:05:25,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 09:05:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-12-02 09:05:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 09:05:25,367 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:05:25,367 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:25,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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)] Forceful destruction successful, exit code 0 [2024-12-02 09:05:25,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:05:25,567 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:05:25,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:05:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 493310322, now seen corresponding path program 1 times [2024-12-02 09:05:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:05:25,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972835572] [2024-12-02 09:05:25,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:25,568 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 09:05:25,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:05:25,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:05:25,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 (8)] Waiting until timeout for monitored process [2024-12-02 09:05:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:25,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 09:05:25,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:06:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 170 proven. 36 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 09:06:09,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:08:37,725 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:08:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972835572] [2024-12-02 09:08:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972835572] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:08:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [321965816] [2024-12-02 09:08:37,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:08:37,726 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 09:08:37,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 09:08:37,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 09:08:37,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-12-02 09:08:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:08:38,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:08:38,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 09:09:43,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:11:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [321965816] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:11:31,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 09:11:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2024-12-02 09:11:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914265013] [2024-12-02 09:11:31,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 09:11:31,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 09:11:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:11:31,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 09:11:31,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2024-12-02 09:11:31,448 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 5 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-12-02 09:12:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:12:09,425 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-12-02 09:12:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 09:12:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 5 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 80 [2024-12-02 09:12:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:12:09,438 INFO L225 Difference]: With dead ends: 83 [2024-12-02 09:12:09,438 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 09:12:09,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 129.1s TimeCoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 09:12:09,439 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:12:09,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 214 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time] [2024-12-02 09:12:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 09:12:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2024-12-02 09:12:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 09:12:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2024-12-02 09:12:09,447 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 80 [2024-12-02 09:12:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:12:09,447 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2024-12-02 09:12:09,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 5 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-12-02 09:12:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2024-12-02 09:12:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 09:12:09,448 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:12:09,448 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:09,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 (8)] Forceful destruction successful, exit code 0 [2024-12-02 09:12:09,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-12-02 09:12:09,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 09:12:09,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:12:09,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:12:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -316036304, now seen corresponding path program 1 times [2024-12-02 09:12:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:12:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097530921] [2024-12-02 09:12:09,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:12:09,850 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 09:12:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 09:12:09,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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 09:12:09,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/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)] Waiting until timeout for monitored process [2024-12-02 09:12:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:12:10,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 09:12:10,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:12:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 170 proven. 36 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 09:12:58,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:14:26,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:14:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097530921] [2024-12-02 09:14:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097530921] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:14:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792533751] [2024-12-02 09:14:26,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:14:26,775 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 09:14:26,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 09:14:26,777 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 09:14:26,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315d9b43-f1c8-47ce-b5d5-3f071800eb0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-12-02 09:14:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:14:27,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:14:27,194 INFO L279 TraceCheckSpWp]: Computing forward predicates...