./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 67ddbc9a1e4c4f55e4cae1326222f0933404d1b62e1d4337e8d831f0f94214e4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:47:01,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:47:02,004 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:47:02,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:47:02,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:47:02,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:47:02,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:47:02,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:47:02,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:47:02,031 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:47:02,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:47:02,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:47:02,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:47:02,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:47:02,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:47:02,033 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:02,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:02,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:47:02,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:02,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:02,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:02,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:02,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:47:02,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:47:02,035 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 -> 67ddbc9a1e4c4f55e4cae1326222f0933404d1b62e1d4337e8d831f0f94214e4 [2024-12-02 08:47:02,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:47:02,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:47:02,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:47:02,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:47:02,275 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:47:02,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:04,936 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/66dce3026/54f419b82cc84340bb2c8a0e5721c711/FLAG0acb7d41a [2024-12-02 08:47:05,113 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:47:05,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:05,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/66dce3026/54f419b82cc84340bb2c8a0e5721c711/FLAG0acb7d41a [2024-12-02 08:47:05,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/66dce3026/54f419b82cc84340bb2c8a0e5721c711 [2024-12-02 08:47:05,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:47:05,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:47:05,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:05,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:47:05,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:47:05,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f111e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05, skipping insertion in model container [2024-12-02 08:47:05,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,153 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:47:05,259 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i[915,928] [2024-12-02 08:47:05,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:05,306 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:47:05,314 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i[915,928] [2024-12-02 08:47:05,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:05,345 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:47:05,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05 WrapperNode [2024-12-02 08:47:05,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:05,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:05,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:47:05,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:47:05,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,384 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 136 [2024-12-02 08:47:05,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:05,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:47:05,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:47:05,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:47:05,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,409 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 08:47:05,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:47:05,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:47:05,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:47:05,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:47:05,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (1/1) ... [2024-12-02 08:47:05,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:05,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:05,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:47:05,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:47:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:47:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:47:05,476 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:47:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:47:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:47:05,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:47:05,531 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:47:05,533 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:47:05,773 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-12-02 08:47:05,773 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:47:05,783 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:47:05,783 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:47:05,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:05 BoogieIcfgContainer [2024-12-02 08:47:05,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:47:05,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:47:05,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:47:05,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:47:05,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:47:05" (1/3) ... [2024-12-02 08:47:05,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc49976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:05, skipping insertion in model container [2024-12-02 08:47:05,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:05" (2/3) ... [2024-12-02 08:47:05,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc49976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:05, skipping insertion in model container [2024-12-02 08:47:05,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:05" (3/3) ... [2024-12-02 08:47:05,793 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:05,809 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:47:05,810 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-70.i that has 2 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:47:05,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:47:05,870 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;@1c73d4d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:47:05,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:47:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 45 states have internal predecessors, (60), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:47:05,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:05,884 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:05,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:05,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1158974616, now seen corresponding path program 1 times [2024-12-02 08:47:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:05,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713527127] [2024-12-02 08:47:05,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:05,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-12-02 08:47:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:06,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713527127] [2024-12-02 08:47:06,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713527127] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:06,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201856219] [2024-12-02 08:47:06,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:06,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:06,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:06,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:06,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:47:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:06,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:47:06,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-12-02 08:47:06,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:47:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201856219] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:47:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:47:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383148841] [2024-12-02 08:47:06,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:06,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:47:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:06,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:47:06,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:47:06,244 INFO L87 Difference]: Start difference. First operand has 60 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 45 states have internal predecessors, (60), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:06,262 INFO L93 Difference]: Finished difference Result 117 states and 182 transitions. [2024-12-02 08:47:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:47:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2024-12-02 08:47:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:06,268 INFO L225 Difference]: With dead ends: 117 [2024-12-02 08:47:06,269 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 08:47:06,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 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 08:47:06,273 INFO L435 NwaCegarLoop]: 83 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, 83 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 08:47:06,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 08:47:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 08:47:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-12-02 08:47:06,303 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 91 [2024-12-02 08:47:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:06,304 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-12-02 08:47:06,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-12-02 08:47:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:47:06,307 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:06,307 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:06,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:47:06,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:47:06,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:06,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1417324694, now seen corresponding path program 1 times [2024-12-02 08:47:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762569658] [2024-12-02 08:47:06,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:11,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:11,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762569658] [2024-12-02 08:47:11,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762569658] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:11,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:47:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818319071] [2024-12-02 08:47:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:11,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:47:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:11,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:47:11,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:47:11,980 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:12,978 INFO L93 Difference]: Finished difference Result 140 states and 199 transitions. [2024-12-02 08:47:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:47:12,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2024-12-02 08:47:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:12,980 INFO L225 Difference]: With dead ends: 140 [2024-12-02 08:47:12,980 INFO L226 Difference]: Without dead ends: 87 [2024-12-02 08:47:12,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:47:12,981 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 103 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:12,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 328 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:47:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-02 08:47:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2024-12-02 08:47:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2024-12-02 08:47:12,991 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 91 [2024-12-02 08:47:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:12,992 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2024-12-02 08:47:12,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2024-12-02 08:47:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:47:12,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:12,994 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:47:12,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:12,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2004130708, now seen corresponding path program 1 times [2024-12-02 08:47:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635540968] [2024-12-02 08:47:12,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635540968] [2024-12-02 08:47:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635540968] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:47:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29837531] [2024-12-02 08:47:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:13,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:47:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:13,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:47:13,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:47:13,063 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:13,088 INFO L93 Difference]: Finished difference Result 149 states and 210 transitions. [2024-12-02 08:47:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:47:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2024-12-02 08:47:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:13,090 INFO L225 Difference]: With dead ends: 149 [2024-12-02 08:47:13,090 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 08:47:13,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:47:13,092 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 33 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:13,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 172 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 08:47:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2024-12-02 08:47:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2024-12-02 08:47:13,099 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 91 [2024-12-02 08:47:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:13,100 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2024-12-02 08:47:13,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2024-12-02 08:47:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:47:13,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:13,102 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:13,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:47:13,102 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -229123346, now seen corresponding path program 1 times [2024-12-02 08:47:13,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:13,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590684899] [2024-12-02 08:47:13,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:13,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:13,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590684899] [2024-12-02 08:47:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590684899] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:13,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:13,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341399722] [2024-12-02 08:47:13,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:13,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:13,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:13,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:13,280 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:13,319 INFO L93 Difference]: Finished difference Result 149 states and 208 transitions. [2024-12-02 08:47:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:13,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2024-12-02 08:47:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:13,321 INFO L225 Difference]: With dead ends: 149 [2024-12-02 08:47:13,321 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 08:47:13,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:13,323 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 31 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:13,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 276 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 08:47:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2024-12-02 08:47:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2024-12-02 08:47:13,329 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 91 [2024-12-02 08:47:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:13,330 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2024-12-02 08:47:13,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2024-12-02 08:47:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:47:13,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:13,331 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:47:13,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1964274108, now seen corresponding path program 1 times [2024-12-02 08:47:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607124763] [2024-12-02 08:47:13,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-12-02 08:47:13,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607124763] [2024-12-02 08:47:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607124763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:13,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974384064] [2024-12-02 08:47:13,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:13,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:13,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:13,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:13,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:47:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:13,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:47:13,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 158 proven. 42 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:47:14,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-12-02 08:47:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974384064] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:47:14,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:47:14,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 21 [2024-12-02 08:47:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156792076] [2024-12-02 08:47:14,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:47:14,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 08:47:14,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:14,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 08:47:14,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-12-02 08:47:14,565 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2024-12-02 08:47:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:15,129 INFO L93 Difference]: Finished difference Result 172 states and 233 transitions. [2024-12-02 08:47:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 08:47:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 94 [2024-12-02 08:47:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:15,131 INFO L225 Difference]: With dead ends: 172 [2024-12-02 08:47:15,131 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 08:47:15,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:47:15,133 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 267 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:15,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 384 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:47:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 08:47:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2024-12-02 08:47:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 83 states have internal predecessors, (105), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 08:47:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2024-12-02 08:47:15,142 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 94 [2024-12-02 08:47:15,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:15,143 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2024-12-02 08:47:15,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2024-12-02 08:47:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2024-12-02 08:47:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:47:15,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:15,145 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:15,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:47:15,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:15,345 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:15,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1629628610, now seen corresponding path program 1 times [2024-12-02 08:47:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513829901] [2024-12-02 08:47:15,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513829901] [2024-12-02 08:47:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513829901] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:15,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:15,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:47:15,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829696208] [2024-12-02 08:47:15,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:15,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:47:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:15,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:47:15,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:47:15,927 INFO L87 Difference]: Start difference. First operand 102 states and 135 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:16,339 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2024-12-02 08:47:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:47:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-12-02 08:47:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:16,341 INFO L225 Difference]: With dead ends: 111 [2024-12-02 08:47:16,341 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 08:47:16,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:47:16,342 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 38 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:16,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 506 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:47:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 08:47:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2024-12-02 08:47:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 87 states have internal predecessors, (109), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 08:47:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-12-02 08:47:16,352 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 94 [2024-12-02 08:47:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:16,352 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-12-02 08:47:16,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-12-02 08:47:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:47:16,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:16,354 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:16,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:47:16,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:16,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2072527750, now seen corresponding path program 1 times [2024-12-02 08:47:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:16,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562738762] [2024-12-02 08:47:16,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562738762] [2024-12-02 08:47:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562738762] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:47:16,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58975750] [2024-12-02 08:47:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:16,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:47:16,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:16,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:47:16,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:16,466 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:16,661 INFO L93 Difference]: Finished difference Result 267 states and 348 transitions. [2024-12-02 08:47:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:47:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-12-02 08:47:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:16,663 INFO L225 Difference]: With dead ends: 267 [2024-12-02 08:47:16,664 INFO L226 Difference]: Without dead ends: 164 [2024-12-02 08:47:16,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:47:16,665 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 74 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:16,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 211 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:47:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-12-02 08:47:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 115. [2024-12-02 08:47:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 96 states have internal predecessors, (124), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 08:47:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2024-12-02 08:47:16,678 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 94 [2024-12-02 08:47:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:16,679 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2024-12-02 08:47:16,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2024-12-02 08:47:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:47:16,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:16,680 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:16,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:47:16,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:16,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1829412536, now seen corresponding path program 1 times [2024-12-02 08:47:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450777295] [2024-12-02 08:47:16,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:47:16,710 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:47:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:47:16,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:47:16,772 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:47:16,772 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 08:47:16,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:47:16,777 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:16,823 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:47:16,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:47:16 BoogieIcfgContainer [2024-12-02 08:47:16,826 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:47:16,827 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:47:16,827 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:47:16,827 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:47:16,828 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:05" (3/4) ... [2024-12-02 08:47:16,830 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:47:16,831 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:47:16,832 INFO L158 Benchmark]: Toolchain (without parser) took 11695.48ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 92.3MB in the beginning and 167.3MB in the end (delta: -75.0MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-12-02 08:47:16,832 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:47:16,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.46ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.3MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:47:16,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.50ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:47:16,833 INFO L158 Benchmark]: Boogie Preprocessor took 41.86ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 73.7MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:47:16,833 INFO L158 Benchmark]: RCFGBuilder took 356.69ms. Allocated memory is still 117.4MB. Free memory was 73.7MB in the beginning and 55.2MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:47:16,833 INFO L158 Benchmark]: TraceAbstraction took 11040.61ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 54.5MB in the beginning and 167.3MB in the end (delta: -112.8MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2024-12-02 08:47:16,834 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 201.3MB. Free memory was 167.3MB in the beginning and 167.3MB in the end (delta: 39.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:47:16,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.46ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.3MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.50ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.86ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 73.7MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.69ms. Allocated memory is still 117.4MB. Free memory was 73.7MB in the beginning and 55.2MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11040.61ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 54.5MB in the beginning and 167.3MB in the end (delta: -112.8MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 201.3MB. Free memory was 167.3MB in the beginning and 167.3MB in the end (delta: 39.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 72, overapproximation of someBinaryDOUBLEComparisonOperation at line 77. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 0; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 1; [L25] unsigned short int var_1_4 = 19138; [L26] unsigned short int var_1_5 = 0; [L27] signed char var_1_6 = 25; [L28] signed long int var_1_7 = -50; [L29] double var_1_8 = 8.3; [L30] unsigned char var_1_9 = 128; [L31] unsigned char var_1_10 = 1; [L32] double var_1_11 = 256.2; VAL [isInitial=0, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L81] isInitial = 1 [L82] FCALL initially() [L83] int k_loop; [L84] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L84] COND TRUE k_loop < 1 VAL [isInitial=1, k_loop=0, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L85] FCALL updateLastVariables() [L86] CALL updateVariables() [L53] var_1_2 = __VERIFIER_nondet_uchar() [L54] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L54] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L55] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L55] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L56] var_1_3 = __VERIFIER_nondet_ushort() [L57] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L57] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L58] CALL assume_abort_if_not(var_1_3 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L58] RET assume_abort_if_not(var_1_3 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L59] var_1_4 = __VERIFIER_nondet_ushort() [L60] CALL assume_abort_if_not(var_1_4 >= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L60] RET assume_abort_if_not(var_1_4 >= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L61] CALL assume_abort_if_not(var_1_4 <= 32767) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L61] RET assume_abort_if_not(var_1_4 <= 32767) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L62] var_1_5 = __VERIFIER_nondet_ushort() [L63] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L63] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L64] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L64] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L65] var_1_9 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_9 >= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L66] RET assume_abort_if_not(var_1_9 >= 127) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L67] CALL assume_abort_if_not(var_1_9 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L67] RET assume_abort_if_not(var_1_9 <= 255) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L68] var_1_10 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L69] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L70] CALL assume_abort_if_not(var_1_10 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L70] RET assume_abort_if_not(var_1_10 <= 127) VAL [isInitial=1, var_1_10=5, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L71] var_1_11 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L72] RET assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L86] RET updateVariables() [L87] CALL step() [L36] COND TRUE \read(var_1_2) [L37] var_1_1 = ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)) VAL [isInitial=1, var_1_10=5, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L39] unsigned short int stepLocal_0 = var_1_4; VAL [isInitial=1, stepLocal_0=29916, var_1_10=5, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L40] EXPR var_1_5 << var_1_1 VAL [isInitial=1, stepLocal_0=29916, var_1_10=5, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L40] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) VAL [isInitial=1, stepLocal_0=29916, var_1_10=5, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=255] [L40] COND FALSE !(stepLocal_0 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) [L43] var_1_7 = (var_1_5 + (var_1_1 + var_1_4)) VAL [isInitial=1, var_1_10=5, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=83/10, var_1_9=255] [L45] COND TRUE (var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3 [L46] var_1_8 = var_1_11 VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L48] COND FALSE !(var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L87] RET step() [L88] CALL, EXPR property() [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L77] EXPR var_1_5 << var_1_1 VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L77] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L77-L78] return (((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4)))))) && (((var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3) ? (var_1_8 == ((double) var_1_11)) : 1) ; [L88] RET, EXPR property() [L88] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] [L19] reach_error() VAL [isInitial=1, var_1_10=5, var_1_11=77058, var_1_1=47137, var_1_2=1, var_1_3=1, var_1_4=29916, var_1_5=0, var_1_6=25, var_1_7=77053, var_1_8=77058, var_1_9=255] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 550 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 546 mSDsluCounter, 1960 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1404 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1122 IncrementalHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 556 mSDtfsCounter, 1122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=7, InterpolantAutomatonStates: 50, 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, 7 MinimizatonAttempts, 112 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 925 NumberOfCodeBlocks, 925 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 915 ConstructedInterpolants, 0 QuantifiedInterpolants, 3995 SizeOfPredicates, 7 NumberOfNonLiveVariables, 431 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 3006/3120 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 08:47:16,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 67ddbc9a1e4c4f55e4cae1326222f0933404d1b62e1d4337e8d831f0f94214e4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:47:18,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:47:18,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 08:47:18,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:47:18,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:47:18,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:47:18,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:47:18,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:47:18,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:47:18,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:47:18,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:47:18,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:47:18,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:47:18,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:47:18,925 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:47:18,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 08:47:18,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:47:18,927 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:18,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:18,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:18,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 08:47:18,928 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 08:47:18,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:47:18,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:47:18,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:47:18,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:47:18,929 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 -> 67ddbc9a1e4c4f55e4cae1326222f0933404d1b62e1d4337e8d831f0f94214e4 [2024-12-02 08:47:19,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:47:19,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:47:19,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:47:19,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:47:19,198 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:47:19,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:21,891 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/14bec0eee/23fb494611624b85a3e291fca7625ae4/FLAG08ebca462 [2024-12-02 08:47:22,078 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:47:22,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:22,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/14bec0eee/23fb494611624b85a3e291fca7625ae4/FLAG08ebca462 [2024-12-02 08:47:22,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/data/14bec0eee/23fb494611624b85a3e291fca7625ae4 [2024-12-02 08:47:22,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:47:22,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:47:22,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:22,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:47:22,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:47:22,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320d8afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22, skipping insertion in model container [2024-12-02 08:47:22,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:47:22,561 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i[915,928] [2024-12-02 08:47:22,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:22,610 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:47:22,618 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_bade48d3-29dc-4d7e-9322-4e6f7c69681b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-70.i[915,928] [2024-12-02 08:47:22,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:22,649 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:47:22,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22 WrapperNode [2024-12-02 08:47:22,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:22,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:22,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:47:22,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:47:22,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,682 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 93 [2024-12-02 08:47:22,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:22,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:47:22,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:47:22,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:47:22,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,700 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 08:47:22,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,705 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:47:22,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:47:22,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:47:22,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:47:22,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (1/1) ... [2024-12-02 08:47:22,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:22,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:47:22,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:47:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:47:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:47:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:47:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:47:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:47:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:47:22,837 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:47:22,839 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:47:23,022 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-12-02 08:47:23,022 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:47:23,037 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:47:23,038 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:47:23,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:23 BoogieIcfgContainer [2024-12-02 08:47:23,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:47:23,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:47:23,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:47:23,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:47:23,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:47:22" (1/3) ... [2024-12-02 08:47:23,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2629fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:23, skipping insertion in model container [2024-12-02 08:47:23,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:22" (2/3) ... [2024-12-02 08:47:23,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2629fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:23, skipping insertion in model container [2024-12-02 08:47:23,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:23" (3/3) ... [2024-12-02 08:47:23,045 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-70.i [2024-12-02 08:47:23,055 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:47:23,056 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-70.i that has 2 procedures, 45 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:47:23,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:47:23,106 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;@6e29f11a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:47:23,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:47:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:47:23,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:23,115 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:23,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:23,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash -622361681, now seen corresponding path program 1 times [2024-12-02 08:47:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:47:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269347231] [2024-12-02 08:47:23,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:23,128 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 08:47:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:47:23,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:23,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:23,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:47:23,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-12-02 08:47:23,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:47:23,306 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:47:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269347231] [2024-12-02 08:47:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269347231] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:23,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:47:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339407538] [2024-12-02 08:47:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:23,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:47:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:47:23,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:47:23,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:47:23,329 INFO L87 Difference]: Start difference. First operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:23,350 INFO L93 Difference]: Finished difference Result 87 states and 138 transitions. [2024-12-02 08:47:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:47:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2024-12-02 08:47:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:23,358 INFO L225 Difference]: With dead ends: 87 [2024-12-02 08:47:23,358 INFO L226 Difference]: Without dead ends: 41 [2024-12-02 08:47:23,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 08:47:23,363 INFO L435 NwaCegarLoop]: 61 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, 61 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 08:47:23,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-12-02 08:47:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-12-02 08:47:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:47:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2024-12-02 08:47:23,396 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 87 [2024-12-02 08:47:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:23,397 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2024-12-02 08:47:23,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2024-12-02 08:47:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:47:23,399 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:23,400 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:23,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-02 08:47:23,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:23,600 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:23,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1333282639, now seen corresponding path program 1 times [2024-12-02 08:47:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:47:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709172685] [2024-12-02 08:47:23,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:23,602 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 08:47:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:47:23,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:23,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:47:23,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 187 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 08:47:24,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:47:25,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:47:25,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709172685] [2024-12-02 08:47:25,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709172685] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:25,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:47:25,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2024-12-02 08:47:25,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727366039] [2024-12-02 08:47:25,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:25,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:25,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:47:25,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:25,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:47:25,260 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:26,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 08:47:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:26,562 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-12-02 08:47:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2024-12-02 08:47:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:26,564 INFO L225 Difference]: With dead ends: 117 [2024-12-02 08:47:26,564 INFO L226 Difference]: Without dead ends: 79 [2024-12-02 08:47:26,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:47:26,565 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 47 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:26,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 133 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:47:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-02 08:47:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2024-12-02 08:47:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 08:47:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2024-12-02 08:47:26,573 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 87 [2024-12-02 08:47:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:26,573 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2024-12-02 08:47:26,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:47:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2024-12-02 08:47:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:47:26,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:26,574 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:26,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:26,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:26,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:26,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1331435597, now seen corresponding path program 1 times [2024-12-02 08:47:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:47:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191291854] [2024-12-02 08:47:26,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:26,776 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 08:47:26,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:47:26,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:47:26,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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)] Waiting until timeout for monitored process [2024-12-02 08:47:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:26,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:47:26,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 211 proven. 57 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 08:48:18,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:49:36,274 WARN L286 SmtUtils]: Spent 25.31s on a formula simplification. DAG size of input: 319 DAG size of output: 302 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:50:03,430 WARN L286 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 302 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:50:29,858 WARN L286 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 301 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:50:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-12-02 08:50:58,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:50:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191291854] [2024-12-02 08:50:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191291854] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:50:58,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:50:58,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23] total 34 [2024-12-02 08:50:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133613020] [2024-12-02 08:50:58,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:50:58,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:50:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:50:58,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:50:58,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:50:58,679 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:51:12,277 WARN L286 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 244 DAG size of output: 243 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:51:49,245 WARN L286 SmtUtils]: Spent 32.54s on a formula simplification. DAG size of input: 455 DAG size of output: 453 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:52:23,810 WARN L286 SmtUtils]: Spent 33.30s on a formula simplification. DAG size of input: 473 DAG size of output: 471 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:52:48,391 WARN L286 SmtUtils]: Spent 23.80s on a formula simplification. DAG size of input: 412 DAG size of output: 406 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:10,918 WARN L286 SmtUtils]: Spent 18.03s on a formula simplification. DAG size of input: 378 DAG size of output: 377 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:19,523 WARN L286 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 333 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:27,545 WARN L286 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 306 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:45,329 WARN L286 SmtUtils]: Spent 15.82s on a formula simplification. DAG size of input: 370 DAG size of output: 369 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:53,443 WARN L286 SmtUtils]: Spent 7.85s on a formula simplification that was a NOOP. DAG size: 306 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 08:53:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:53,649 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2024-12-02 08:53:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 08:53:53,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2024-12-02 08:53:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:53,654 INFO L225 Difference]: With dead ends: 108 [2024-12-02 08:53:53,654 INFO L226 Difference]: Without dead ends: 106 [2024-12-02 08:53:53,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 219.8s TimeCoverageRelationStatistics Valid=315, Invalid=1576, Unknown=1, NotChecked=0, Total=1892 [2024-12-02 08:53:53,656 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 230 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:53,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 189 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 08:53:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-12-02 08:53:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 53. [2024-12-02 08:53:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:53:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-12-02 08:53:53,669 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 87 [2024-12-02 08:53:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:53,670 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-12-02 08:53:53,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:53:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-12-02 08:53:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:53:53,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:53,671 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:53,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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)] Forceful destruction successful, exit code 0 [2024-12-02 08:53:53,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:53:53,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:53,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1274177295, now seen corresponding path program 1 times [2024-12-02 08:53:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:53:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794308811] [2024-12-02 08:53:53,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:53,873 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 08:53:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:53:53,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:53:53,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:53:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:54,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 08:53:54,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 187 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 08:54:41,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:55:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 08:55:21,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:55:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794308811] [2024-12-02 08:55:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794308811] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:55:21,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2024-12-02 08:55:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701867709] [2024-12-02 08:55:21,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:21,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:55:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:55:21,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:55:21,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2024-12-02 08:55:21,323 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:56:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:00,840 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2024-12-02 08:56:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:56:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2024-12-02 08:56:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:00,842 INFO L225 Difference]: With dead ends: 87 [2024-12-02 08:56:00,843 INFO L226 Difference]: Without dead ends: 85 [2024-12-02 08:56:00,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=185, Invalid=999, Unknown=6, NotChecked=0, Total=1190 [2024-12-02 08:56:00,843 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 69 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:00,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 294 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:56:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-02 08:56:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 54. [2024-12-02 08:56:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 08:56:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-12-02 08:56:00,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 87 [2024-12-02 08:56:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:00,853 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-12-02 08:56:00,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 08:56:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-12-02 08:56:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:56:00,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:00,854 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:00,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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)] Forceful destruction successful, exit code 0 [2024-12-02 08:56:01,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:56:01,055 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:01,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1186677295, now seen corresponding path program 1 times [2024-12-02 08:56:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:56:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009777451] [2024-12-02 08:56:01,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:01,056 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 08:56:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:56:01,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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 08:56:01,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bade48d3-29dc-4d7e-9322-4e6f7c69681b/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)] Waiting until timeout for monitored process [2024-12-02 08:56:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:01,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 08:56:01,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 182 proven. 36 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-12-02 09:00:00,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:01:39,487 WARN L286 SmtUtils]: Spent 16.08s on a formula simplification. DAG size of input: 278 DAG size of output: 283 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)