./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/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 3cc62b0a7b5ca086e8c61d00992860cd8ca304621a0a6299cced66b64f38849b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:05:35,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:05:35,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:05:35,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:05:35,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:05:35,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:05:35,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:05:35,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:05:35,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:05:35,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:05:35,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:05:35,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:05:35,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:05:35,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:05:35,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:05:35,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:05:35,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:05:35,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:05:35,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:05:35,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:05:35,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:05:35,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:05:35,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:05:35,819 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:05:35,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:05:35,819 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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/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 -> 3cc62b0a7b5ca086e8c61d00992860cd8ca304621a0a6299cced66b64f38849b [2024-12-02 15:05:36,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:05:36,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:05:36,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:05:36,037 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:05:36,037 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:05:36,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-12-02 15:05:38,627 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/data/c9c33c440/3e9d952c1d7e433cb04eaf407db9cbd3/FLAG626e2ac08 [2024-12-02 15:05:38,870 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:05:38,870 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-12-02 15:05:38,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/data/c9c33c440/3e9d952c1d7e433cb04eaf407db9cbd3/FLAG626e2ac08 [2024-12-02 15:05:39,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/data/c9c33c440/3e9d952c1d7e433cb04eaf407db9cbd3 [2024-12-02 15:05:39,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:05:39,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:05:39,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:05:39,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:05:39,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:05:39,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1760e23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39, skipping insertion in model container [2024-12-02 15:05:39,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:05:39,338 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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i[915,928] [2024-12-02 15:05:39,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:05:39,380 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:05:39,388 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_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i[915,928] [2024-12-02 15:05:39,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:05:39,419 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:05:39,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39 WrapperNode [2024-12-02 15:05:39,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:05:39,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:05:39,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:05:39,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:05:39,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,449 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-12-02 15:05:39,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:05:39,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:05:39,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:05:39,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:05:39,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,470 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 15:05:39,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,474 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:05:39,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:05:39,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:05:39,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:05:39,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (1/1) ... [2024-12-02 15:05:39,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:05:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:05:39,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:05:39,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:05:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:05:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:05:39,530 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:05:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:05:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:05:39,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:05:39,583 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:05:39,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:05:39,779 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-12-02 15:05:39,779 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:05:39,790 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:05:39,790 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:05:39,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:05:39 BoogieIcfgContainer [2024-12-02 15:05:39,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:05:39,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:05:39,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:05:39,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:05:39,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:05:39" (1/3) ... [2024-12-02 15:05:39,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aab443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:05:39, skipping insertion in model container [2024-12-02 15:05:39,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:05:39" (2/3) ... [2024-12-02 15:05:39,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aab443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:05:39, skipping insertion in model container [2024-12-02 15:05:39,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:05:39" (3/3) ... [2024-12-02 15:05:39,798 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-12-02 15:05:39,809 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:05:39,810 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-14.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:05:39,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:05:39,863 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;@1792298c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:05:39,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:05:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 15:05:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:05:39,873 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:39,874 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:39,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:39,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash 140064745, now seen corresponding path program 1 times [2024-12-02 15:05:39,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:39,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150567230] [2024-12-02 15:05:39,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:39,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 15:05:40,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150567230] [2024-12-02 15:05:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150567230] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:05:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343513199] [2024-12-02 15:05:40,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:40,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:05:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:05:40,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:05:40,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:05:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:40,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:05:40,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:05:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 15:05:40,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:05:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343513199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:05:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:05:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546531487] [2024-12-02 15:05:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:40,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:05:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:40,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:05:40,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:05:40,268 INFO L87 Difference]: Start difference. First operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 15:05:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:40,288 INFO L93 Difference]: Finished difference Result 101 states and 163 transitions. [2024-12-02 15:05:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:05:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2024-12-02 15:05:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:40,294 INFO L225 Difference]: With dead ends: 101 [2024-12-02 15:05:40,295 INFO L226 Difference]: Without dead ends: 48 [2024-12-02 15:05:40,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 15:05:40,299 INFO L435 NwaCegarLoop]: 72 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, 72 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 15:05:40,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:05:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-12-02 15:05:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-12-02 15:05:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 15:05:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2024-12-02 15:05:40,328 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 105 [2024-12-02 15:05:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:40,329 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2024-12-02 15:05:40,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 15:05:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2024-12-02 15:05:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:05:40,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:40,332 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:40,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:05:40,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:05:40,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:40,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash 506992617, now seen corresponding path program 1 times [2024-12-02 15:05:40,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:40,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4130335] [2024-12-02 15:05:40,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 15:05:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4130335] [2024-12-02 15:05:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4130335] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:05:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:05:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911884730] [2024-12-02 15:05:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:40,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:05:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:40,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:05:40,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:05:40,881 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:41,022 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2024-12-02 15:05:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:05:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105 [2024-12-02 15:05:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:41,025 INFO L225 Difference]: With dead ends: 150 [2024-12-02 15:05:41,025 INFO L226 Difference]: Without dead ends: 105 [2024-12-02 15:05:41,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 15:05:41,026 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 65 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:41,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 183 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:05:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-12-02 15:05:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2024-12-02 15:05:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 15:05:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2024-12-02 15:05:41,046 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 130 transitions. Word has length 105 [2024-12-02 15:05:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:41,047 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 130 transitions. [2024-12-02 15:05:41,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 130 transitions. [2024-12-02 15:05:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:05:41,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:41,049 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:41,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:05:41,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:41,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1311902739, now seen corresponding path program 1 times [2024-12-02 15:05:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:41,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600877910] [2024-12-02 15:05:41,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 15:05:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600877910] [2024-12-02 15:05:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600877910] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:05:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:05:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566767117] [2024-12-02 15:05:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:46,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:05:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:46,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:05:46,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:05:46,749 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 15:05:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:48,501 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2024-12-02 15:05:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:05:48,502 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), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 105 [2024-12-02 15:05:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:48,503 INFO L225 Difference]: With dead ends: 103 [2024-12-02 15:05:48,503 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 15:05:48,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:05:48,504 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 98 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:48,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 252 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:05:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 15:05:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-12-02 15:05:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 59 states have internal predecessors, (69), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 15:05:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 133 transitions. [2024-12-02 15:05:48,520 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 133 transitions. Word has length 105 [2024-12-02 15:05:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:48,521 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 133 transitions. [2024-12-02 15:05:48,521 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), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 15:05:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 133 transitions. [2024-12-02 15:05:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:05:48,522 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:48,523 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:48,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:05:48,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:48,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1310055697, now seen corresponding path program 1 times [2024-12-02 15:05:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448137652] [2024-12-02 15:05:48,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 15:05:48,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448137652] [2024-12-02 15:05:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448137652] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:48,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:05:48,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:05:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917341722] [2024-12-02 15:05:48,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:48,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:05:48,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:48,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:05:48,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:05:48,627 INFO L87 Difference]: Start difference. First operand 94 states and 133 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:48,757 INFO L93 Difference]: Finished difference Result 227 states and 324 transitions. [2024-12-02 15:05:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:05:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105 [2024-12-02 15:05:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:48,759 INFO L225 Difference]: With dead ends: 227 [2024-12-02 15:05:48,759 INFO L226 Difference]: Without dead ends: 136 [2024-12-02 15:05:48,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:05:48,761 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 48 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:48,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 221 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:05:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-12-02 15:05:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2024-12-02 15:05:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 states have internal predecessors, (95), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 15:05:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2024-12-02 15:05:48,782 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 191 transitions. Word has length 105 [2024-12-02 15:05:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:48,782 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 191 transitions. [2024-12-02 15:05:48,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 191 transitions. [2024-12-02 15:05:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 15:05:48,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:48,784 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:48,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:05:48,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:48,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -143700345, now seen corresponding path program 1 times [2024-12-02 15:05:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580577205] [2024-12-02 15:05:48,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 15:05:51,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580577205] [2024-12-02 15:05:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580577205] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:51,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:05:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:05:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609414937] [2024-12-02 15:05:51,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:51,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:05:51,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:51,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:05:51,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:05:51,434 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:52,417 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2024-12-02 15:05:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:05:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 106 [2024-12-02 15:05:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:52,419 INFO L225 Difference]: With dead ends: 178 [2024-12-02 15:05:52,419 INFO L226 Difference]: Without dead ends: 176 [2024-12-02 15:05:52,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:05:52,421 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 80 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:52,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 273 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:05:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-12-02 15:05:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2024-12-02 15:05:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 91 states have internal predecessors, (107), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 15:05:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2024-12-02 15:05:52,446 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 203 transitions. Word has length 106 [2024-12-02 15:05:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:52,447 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 203 transitions. [2024-12-02 15:05:52,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 203 transitions. [2024-12-02 15:05:52,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 15:05:52,449 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:52,449 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:52,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:05:52,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:52,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1631307017, now seen corresponding path program 1 times [2024-12-02 15:05:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:52,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370753041] [2024-12-02 15:05:52,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 15:05:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370753041] [2024-12-02 15:05:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370753041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:05:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:05:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193344313] [2024-12-02 15:05:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:55,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:05:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:55,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:05:55,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:05:55,570 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:56,378 INFO L93 Difference]: Finished difference Result 179 states and 239 transitions. [2024-12-02 15:05:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:05:56,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 106 [2024-12-02 15:05:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:56,380 INFO L225 Difference]: With dead ends: 179 [2024-12-02 15:05:56,380 INFO L226 Difference]: Without dead ends: 177 [2024-12-02 15:05:56,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:05:56,381 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:56,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 347 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:05:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-12-02 15:05:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 150. [2024-12-02 15:05:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 98 states have internal predecessors, (115), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 15:05:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 211 transitions. [2024-12-02 15:05:56,401 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 211 transitions. Word has length 106 [2024-12-02 15:05:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:56,402 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 211 transitions. [2024-12-02 15:05:56,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:05:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 211 transitions. [2024-12-02 15:05:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 15:05:56,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:05:56,405 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:05:56,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:05:56,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:05:56,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:05:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1760042288, now seen corresponding path program 1 times [2024-12-02 15:05:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:05:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15621738] [2024-12-02 15:05:56,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:05:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-12-02 15:05:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:05:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15621738] [2024-12-02 15:05:56,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15621738] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:05:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978218122] [2024-12-02 15:05:56,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:05:56,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:05:56,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:05:56,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:05:56,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:05:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:05:56,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:05:56,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:05:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2024-12-02 15:05:56,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:05:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978218122] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:05:56,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:05:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-02 15:05:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625302350] [2024-12-02 15:05:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:05:56,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:05:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:05:56,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:05:56,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:05:56,745 INFO L87 Difference]: Start difference. First operand 150 states and 211 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 15:05:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:05:56,796 INFO L93 Difference]: Finished difference Result 210 states and 290 transitions. [2024-12-02 15:05:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:05:56,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 208 [2024-12-02 15:05:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:05:56,798 INFO L225 Difference]: With dead ends: 210 [2024-12-02 15:05:56,798 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 15:05:56,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 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 15:05:56,799 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:05:56,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 108 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:05:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 15:05:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 15:05:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:05:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 15:05:56,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2024-12-02 15:05:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:05:56,800 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 15:05:56,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 15:05:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 15:05:56,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 15:05:56,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 15:05:56,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:05:57,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:05:57,006 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:05:57,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 15:05:57,854 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 15:05:57,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:05:57 BoogieIcfgContainer [2024-12-02 15:05:57,867 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 15:05:57,868 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 15:05:57,868 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 15:05:57,868 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 15:05:57,868 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:05:39" (3/4) ... [2024-12-02 15:05:57,870 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 15:05:57,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-12-02 15:05:57,878 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-02 15:05:57,878 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 15:05:57,878 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 15:05:57,879 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 15:05:57,942 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 15:05:57,942 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 15:05:57,942 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 15:05:57,943 INFO L158 Benchmark]: Toolchain (without parser) took 18724.52ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 117.4MB in the beginning and 413.5MB in the end (delta: -296.1MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2024-12-02 15:05:57,943 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:05:57,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.18ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 105.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 15:05:57,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.32ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:05:57,944 INFO L158 Benchmark]: Boogie Preprocessor took 31.40ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:05:57,944 INFO L158 Benchmark]: RCFGBuilder took 308.96ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 86.0MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 15:05:57,945 INFO L158 Benchmark]: TraceAbstraction took 18074.65ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 85.4MB in the beginning and 417.8MB in the end (delta: -332.3MB). Peak memory consumption was 257.9MB. Max. memory is 16.1GB. [2024-12-02 15:05:57,945 INFO L158 Benchmark]: Witness Printer took 74.41ms. Allocated memory is still 486.5MB. Free memory was 417.8MB in the beginning and 413.5MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:05:57,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.18ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 105.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.32ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.40ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 308.96ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 86.0MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18074.65ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 85.4MB in the beginning and 417.8MB in the end (delta: -332.3MB). Peak memory consumption was 257.9MB. Max. memory is 16.1GB. * Witness Printer took 74.41ms. Allocated memory is still 486.5MB. Free memory was 417.8MB in the beginning and 413.5MB in the end (delta: 4.3MB). 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 7, TraceHistogramMax: 32, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 1456 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1005 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 679 IncrementalHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 451 mSDtfsCounter, 679 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 394 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=6, InterpolantAutomatonStates: 48, 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, 83 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 1153 NumberOfCodeBlocks, 1153 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 5440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 7371/7402 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: (((1 <= k_loop) && (((var_1_5 == last_1_var_1_12) && (last_1_var_1_9 != 0)) || ((last_1_var_1_9 == 0) && (((((((16 + var_1_7) + (var_1_8 * 65535)) >= 0) ? (((16 + var_1_7) + (var_1_8 * 65535)) % 65536) : ((((16 + var_1_7) + (var_1_8 * 65535)) % 65536) + 65536)) == var_1_5) && (((((16 + var_1_7) + (var_1_8 * 65535)) >= 0) ? (((16 + var_1_7) + (var_1_8 * 65535)) % 65536) : ((((16 + var_1_7) + (var_1_8 * 65535)) % 65536) + 65536)) <= 32767)) || (((65536 + var_1_5) == ((((16 + var_1_7) + (var_1_8 * 65535)) >= 0) ? (((16 + var_1_7) + (var_1_8 * 65535)) % 65536) : ((((16 + var_1_7) + (var_1_8 * 65535)) % 65536) + 65536))) && (32768 <= ((((16 + var_1_7) + (var_1_8 * 65535)) >= 0) ? (((16 + var_1_7) + (var_1_8 * 65535)) % 65536) : ((((16 + var_1_7) + (var_1_8 * 65535)) % 65536) + 65536)))))))) || ((((((((0 <= (var_1_8 + 32768)) && (last_1_var_1_9 == 0)) && (1000000 <= var_1_1)) && (0 <= k_loop)) && (var_1_7 <= 32767)) && (var_1_9 == 0)) && (((long long) var_1_18 + 999744) <= var_1_1)) && (0 <= (var_1_7 + 32768)))) RESULT: Ultimate proved your program to be correct! [2024-12-02 15:05:57,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ecb7bb-ccb6-4ae5-b6e3-d0c1309b045e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE