./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:22:54,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:22:54,807 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:22:54,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:22:54,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:22:54,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:22:54,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:22:54,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:22:54,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:22:54,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:22:54,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:22:54,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:22:54,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:22:54,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:22:54,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:22:54,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:22:54,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:22:54,839 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:54,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:22:54,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:54,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:22:54,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:22:54,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:22:54,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:22:54,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:22:54,842 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 -> 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 [2024-12-02 11:22:55,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:22:55,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:22:55,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:22:55,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:22:55,099 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:22:55,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2024-12-02 11:22:57,795 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/ea17bd282/4ff8b541a81240cdbb3153c9c1c34a0e/FLAGdd0309f86 [2024-12-02 11:22:58,006 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:22:58,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2024-12-02 11:22:58,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/ea17bd282/4ff8b541a81240cdbb3153c9c1c34a0e/FLAGdd0309f86 [2024-12-02 11:22:58,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/ea17bd282/4ff8b541a81240cdbb3153c9c1c34a0e [2024-12-02 11:22:58,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:22:58,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:22:58,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:22:58,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:22:58,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:22:58,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f9e34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58, skipping insertion in model container [2024-12-02 11:22:58,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:22:58,523 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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2024-12-02 11:22:58,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:22:58,577 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:22:58,589 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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2024-12-02 11:22:58,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:22:58,625 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:22:58,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58 WrapperNode [2024-12-02 11:22:58,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:22:58,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:22:58,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:22:58,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:22:58,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,669 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2024-12-02 11:22:58,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:22:58,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:22:58,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:22:58,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:22:58,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,694 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 11:22:58,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:22:58,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:22:58,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:22:58,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:22:58,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (1/1) ... [2024-12-02 11:22:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:58,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:22:58,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:22:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:22:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:22:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:22:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:22:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:22:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:22:58,845 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:22:58,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:22:59,077 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-12-02 11:22:59,078 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:22:59,085 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:22:59,085 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:22:59,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:22:59 BoogieIcfgContainer [2024-12-02 11:22:59,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:22:59,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:22:59,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:22:59,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:22:59,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:22:58" (1/3) ... [2024-12-02 11:22:59,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e79f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:22:59, skipping insertion in model container [2024-12-02 11:22:59,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:58" (2/3) ... [2024-12-02 11:22:59,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e79f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:22:59, skipping insertion in model container [2024-12-02 11:22:59,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:22:59" (3/3) ... [2024-12-02 11:22:59,095 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-58.i [2024-12-02 11:22:59,107 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:22:59,108 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount25_file-58.i that has 2 procedures, 45 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:22:59,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:22:59,164 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;@6e8127ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:22:59,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:22:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 11:22:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:22:59,174 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:59,175 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:59,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:59,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash -576999655, now seen corresponding path program 1 times [2024-12-02 11:22:59,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807624434] [2024-12-02 11:22:59,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:59,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:22:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640210251] [2024-12-02 11:22:59,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:59,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:59,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:59,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:22:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:59,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 11:22:59,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 182 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 11:23:00,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:00,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807624434] [2024-12-02 11:23:00,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:23:00,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640210251] [2024-12-02 11:23:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640210251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:00,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:23:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-12-02 11:23:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748982735] [2024-12-02 11:23:00,513 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:00,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:23:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:00,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:23:00,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:23:00,535 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 11:23:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:01,347 INFO L93 Difference]: Finished difference Result 134 states and 224 transitions. [2024-12-02 11:23:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 11:23:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 81 [2024-12-02 11:23:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:01,356 INFO L225 Difference]: With dead ends: 134 [2024-12-02 11:23:01,356 INFO L226 Difference]: Without dead ends: 92 [2024-12-02 11:23:01,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:23:01,361 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 93 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:01,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 238 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:23:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-12-02 11:23:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2024-12-02 11:23:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 11:23:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2024-12-02 11:23:01,407 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 81 [2024-12-02 11:23:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:01,408 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2024-12-02 11:23:01,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 11:23:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2024-12-02 11:23:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:23:01,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:01,411 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:01,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:23:01,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:23:01,612 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:01,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash 103058715, now seen corresponding path program 1 times [2024-12-02 11:23:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:01,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041032116] [2024-12-02 11:23:01,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:01,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:23:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041032116] [2024-12-02 11:23:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041032116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 11:23:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038889193] [2024-12-02 11:23:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:03,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:23:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:03,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:23:03,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:23:03,055 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:23:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:03,460 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-12-02 11:23:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:23:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 81 [2024-12-02 11:23:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:03,462 INFO L225 Difference]: With dead ends: 103 [2024-12-02 11:23:03,462 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 11:23:03,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:23:03,464 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 40 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:03,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 273 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:23:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 11:23:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2024-12-02 11:23:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 11:23:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2024-12-02 11:23:03,482 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 81 [2024-12-02 11:23:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:03,483 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2024-12-02 11:23:03,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:23:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2024-12-02 11:23:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:23:03,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:03,485 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:03,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:23:03,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:03,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 104905757, now seen corresponding path program 1 times [2024-12-02 11:23:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979052290] [2024-12-02 11:23:03,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:23:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216658462] [2024-12-02 11:23:03,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:03,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:03,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:03,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:23:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:23:03,658 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:23:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:23:03,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:23:03,736 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:23:03,737 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 11:23:03,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:23:03,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 11:23:03,942 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 11:23:03,985 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:23:03,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:23:03 BoogieIcfgContainer [2024-12-02 11:23:03,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:23:03,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:23:03,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:23:03,988 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:23:03,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:22:59" (3/4) ... [2024-12-02 11:23:03,991 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 11:23:03,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:23:03,993 INFO L158 Benchmark]: Toolchain (without parser) took 5631.74ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 116.8MB in the beginning and 265.0MB in the end (delta: -148.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-12-02 11:23:03,993 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:23:03,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.76ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 104.2MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:23:03,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.65ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 101.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:23:03,994 INFO L158 Benchmark]: Boogie Preprocessor took 40.76ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 98.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:23:03,994 INFO L158 Benchmark]: RCFGBuilder took 373.89ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 82.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:23:03,995 INFO L158 Benchmark]: TraceAbstraction took 4899.60ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 82.4MB in the beginning and 265.1MB in the end (delta: -182.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-12-02 11:23:03,995 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 327.2MB. Free memory was 265.1MB in the beginning and 265.0MB in the end (delta: 17.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:23:03,997 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.76ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 104.2MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.65ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 101.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.76ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 98.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.89ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 82.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4899.60ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 82.4MB in the beginning and 265.1MB in the end (delta: -182.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 327.2MB. Free memory was 265.1MB in the beginning and 265.0MB in the end (delta: 17.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 90, overapproximation of someBinaryFLOATComparisonOperation at line 61, overapproximation of someBinaryFLOATComparisonOperation at line 80. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 64; [L23] signed long int var_1_2 = 8; [L24] unsigned char var_1_3 = 25; [L25] unsigned char var_1_4 = 100; [L26] float var_1_5 = 99999999999.5; [L27] unsigned char var_1_6 = 4; [L28] float var_1_7 = 63.75; [L29] unsigned char var_1_9 = 0; [L30] unsigned char var_1_10 = 1; [L31] unsigned char last_1_var_1_1 = 64; [L32] unsigned char last_1_var_1_9 = 0; VAL [isInitial=0, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=8, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L94] isInitial = 1 [L95] FCALL initially() [L97] CALL updateLastVariables() [L86] last_1_var_1_1 = var_1_1 [L87] last_1_var_1_9 = var_1_9 VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=8, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L97] RET updateLastVariables() [L98] CALL updateVariables() [L66] var_1_2 = __VERIFIER_nondet_long() [L67] CALL assume_abort_if_not(var_1_2 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L67] RET assume_abort_if_not(var_1_2 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L68] CALL assume_abort_if_not(var_1_2 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L68] RET assume_abort_if_not(var_1_2 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L69] var_1_3 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L70] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L71] CALL assume_abort_if_not(var_1_3 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L71] RET assume_abort_if_not(var_1_3 <= 254) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L72] var_1_4 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_4 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L73] RET assume_abort_if_not(var_1_4 >= 63) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L74] CALL assume_abort_if_not(var_1_4 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L74] RET assume_abort_if_not(var_1_4 <= 127) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L75] var_1_6 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L76] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L77] CALL assume_abort_if_not(var_1_6 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L77] RET assume_abort_if_not(var_1_6 <= 255) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L78] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L78] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L79] var_1_7 = __VERIFIER_nondet_float() [L80] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L80] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L81] var_1_10 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_10 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L82] RET assume_abort_if_not(var_1_10 >= 1) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L83] CALL assume_abort_if_not(var_1_10 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L83] RET assume_abort_if_not(var_1_10 <= 1) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L98] RET updateVariables() [L99] CALL step() [L36] signed long int stepLocal_3 = last_1_var_1_1; [L37] signed long int stepLocal_2 = var_1_3 / var_1_6; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_2=0, stepLocal_3=64, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L38] COND TRUE var_1_3 < stepLocal_3 VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_2=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L39] COND FALSE !(var_1_4 < stepLocal_2) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L49] signed long int stepLocal_1 = var_1_2; [L50] signed long int stepLocal_0 = var_1_2; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_1=-256, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L51] COND TRUE stepLocal_1 <= -256 [L52] var_1_1 = ((((var_1_3) < (((var_1_4 - 8) + 5))) ? (var_1_3) : (((var_1_4 - 8) + 5)))) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L60] unsigned char stepLocal_4 = (var_1_1 + 64u) != var_1_4; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_4=0, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L61] COND FALSE !((var_1_5 >= var_1_7) || stepLocal_4) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L99] RET step() [L100] CALL, EXPR property() [L90-L91] return (((var_1_2 <= -256) ? (var_1_1 == ((unsigned char) ((((var_1_3) < (((var_1_4 - 8) + 5))) ? (var_1_3) : (((var_1_4 - 8) + 5)))))) : ((var_1_4 <= var_1_2) ? (var_1_1 == ((unsigned char) var_1_3)) : (var_1_1 == ((unsigned char) var_1_3)))) && ((var_1_3 < last_1_var_1_1) ? ((var_1_4 < (var_1_3 / var_1_6)) ? (var_1_5 == ((float) (var_1_7 - 16.55f))) : 1) : (last_1_var_1_9 ? (var_1_5 == ((float) var_1_7)) : (var_1_5 == ((float) var_1_7))))) && (((var_1_5 >= var_1_7) || ((var_1_1 + 64u) != var_1_4)) ? (var_1_9 == ((unsigned char) var_1_10)) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L100] RET, EXPR property() [L100] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=0, var_1_2=-256, var_1_3=-256, var_1_4=64, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 511 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 430 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 81 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 2 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 160 ConstructedInterpolants, 2 QuantifiedInterpolants, 1069 SizeOfPredicates, 5 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 501/528 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 11:23:04,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:23:06,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:23:06,149 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 11:23:06,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:23:06,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:23:06,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:23:06,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:23:06,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:23:06,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:23:06,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:23:06,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:23:06,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:23:06,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:23:06,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:23:06,184 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:23:06,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:23:06,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:23:06,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:23:06,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:06,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:23:06,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:06,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:23:06,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:23:06,188 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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 -> 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 [2024-12-02 11:23:06,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:23:06,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:23:06,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:23:06,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:23:06,474 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:23:06,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2024-12-02 11:23:09,241 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/0185c6b19/01c2a16dd14c4b7dbd1ab4a7255cd80c/FLAGff8902d8b [2024-12-02 11:23:09,438 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:23:09,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2024-12-02 11:23:09,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/0185c6b19/01c2a16dd14c4b7dbd1ab4a7255cd80c/FLAGff8902d8b [2024-12-02 11:23:09,465 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/data/0185c6b19/01c2a16dd14c4b7dbd1ab4a7255cd80c [2024-12-02 11:23:09,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:23:09,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:23:09,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:23:09,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:23:09,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:23:09,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274baea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09, skipping insertion in model container [2024-12-02 11:23:09,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:23:09,647 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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2024-12-02 11:23:09,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:23:09,703 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:23:09,715 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_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2024-12-02 11:23:09,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:23:09,755 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:23:09,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09 WrapperNode [2024-12-02 11:23:09,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:23:09,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:23:09,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:23:09,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:23:09,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,797 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2024-12-02 11:23:09,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:23:09,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:23:09,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:23:09,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:23:09,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,825 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 11:23:09,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,833 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:23:09,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:23:09,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:23:09,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:23:09,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (1/1) ... [2024-12-02 11:23:09,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:23:09,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:09,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:23:09,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:23:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:23:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 11:23:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:23:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:23:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:23:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:23:09,977 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:23:09,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:23:10,337 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-12-02 11:23:10,337 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:23:10,346 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:23:10,346 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:23:10,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:23:10 BoogieIcfgContainer [2024-12-02 11:23:10,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:23:10,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:23:10,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:23:10,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:23:10,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:23:09" (1/3) ... [2024-12-02 11:23:10,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d124e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:23:10, skipping insertion in model container [2024-12-02 11:23:10,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:23:09" (2/3) ... [2024-12-02 11:23:10,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d124e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:23:10, skipping insertion in model container [2024-12-02 11:23:10,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:23:10" (3/3) ... [2024-12-02 11:23:10,360 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-58.i [2024-12-02 11:23:10,373 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:23:10,374 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount25_file-58.i that has 2 procedures, 45 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:23:10,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:23:10,429 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;@dd2d11d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:23:10,429 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:23:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-12-02 11:23:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:23:10,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:10,442 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:10,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:10,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash -576999655, now seen corresponding path program 1 times [2024-12-02 11:23:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:23:10,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288059112] [2024-12-02 11:23:10,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:10,458 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 11:23:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:23:10,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:23:10,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:23:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:10,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:23:10,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 11:23:12,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:32,845 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:23:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288059112] [2024-12-02 11:23:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288059112] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1405352698] [2024-12-02 11:23:32,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 11:23:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 11:23:32,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 11:23:32,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-12-02 11:23:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:33,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 11:23:33,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 36 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:24:00,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:25:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1405352698] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:37,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:25:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 34 [2024-12-02 11:25:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875927246] [2024-12-02 11:25:37,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:25:37,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 11:25:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:25:37,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 11:25:37,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=2282, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 11:25:37,616 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 32 states have internal predecessors, (77), 8 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-12-02 11:26:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:11,758 INFO L93 Difference]: Finished difference Result 158 states and 254 transitions. [2024-12-02 11:26:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 11:26:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 32 states have internal predecessors, (77), 8 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 81 [2024-12-02 11:26:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:11,771 INFO L225 Difference]: With dead ends: 158 [2024-12-02 11:26:11,772 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 11:26:11,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 116.5s TimeCoverageRelationStatistics Valid=925, Invalid=4775, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 11:26:11,778 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 217 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:11,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 456 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 11:26:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 11:26:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2024-12-02 11:26:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 11:26:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2024-12-02 11:26:11,815 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 81 [2024-12-02 11:26:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:11,815 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2024-12-02 11:26:11,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 32 states have internal predecessors, (77), 8 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-12-02 11:26:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2024-12-02 11:26:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:26:11,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:11,818 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:26:11,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:26:12,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-12-02 11:26:12,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 11:26:12,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:12,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash 103058715, now seen corresponding path program 1 times [2024-12-02 11:26:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:26:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85778641] [2024-12-02 11:26:12,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:26:12,220 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 11:26:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:26:12,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:26:12,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:26:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:26:12,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:26:12,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:26:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 11:26:29,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:26:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:26:57,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:26:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85778641] [2024-12-02 11:26:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85778641] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:26:57,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:26:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2024-12-02 11:26:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870630939] [2024-12-02 11:26:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:26:57,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:26:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:26:57,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:26:57,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-12-02 11:26:57,676 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:27:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:27:01,522 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2024-12-02 11:27:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:27:01,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 81 [2024-12-02 11:27:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:27:01,530 INFO L225 Difference]: With dead ends: 115 [2024-12-02 11:27:01,530 INFO L226 Difference]: Without dead ends: 113 [2024-12-02 11:27:01,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:27:01,532 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 46 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:27:01,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 282 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 11:27:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-12-02 11:27:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2024-12-02 11:27:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 62 states have internal predecessors, (72), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 11:27:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2024-12-02 11:27:01,551 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 81 [2024-12-02 11:27:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:27:01,552 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2024-12-02 11:27:01,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:27:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2024-12-02 11:27:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:27:01,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:27:01,554 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:27:01,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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)] Ended with exit code 0 [2024-12-02 11:27:01,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:27:01,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:27:01,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:27:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 104905757, now seen corresponding path program 1 times [2024-12-02 11:27:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:27:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536740891] [2024-12-02 11:27:01,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:27:01,756 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 11:27:01,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:27:01,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:27:01,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:27:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:27:01,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 11:27:01,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:27:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 177 proven. 24 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 11:27:17,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:27:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:27:46,844 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:27:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536740891] [2024-12-02 11:27:46,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536740891] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:27:46,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:27:46,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2024-12-02 11:27:46,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173607402] [2024-12-02 11:27:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:27:46,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:27:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:27:46,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:27:46,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:27:46,846 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:28:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:00,004 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2024-12-02 11:28:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:28:00,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 81 [2024-12-02 11:28:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:00,009 INFO L225 Difference]: With dead ends: 111 [2024-12-02 11:28:00,009 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 11:28:00,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2024-12-02 11:28:00,010 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:00,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 339 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 11:28:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 11:28:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2024-12-02 11:28:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-12-02 11:28:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2024-12-02 11:28:00,021 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 81 [2024-12-02 11:28:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:00,022 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2024-12-02 11:28:00,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:28:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2024-12-02 11:28:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:28:00,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:00,023 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:28:00,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-12-02 11:28:00,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:28:00,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:00,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:00,224 INFO L85 PathProgramCache]: Analyzing trace with hash 571125785, now seen corresponding path program 1 times [2024-12-02 11:28:00,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:28:00,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030606484] [2024-12-02 11:28:00,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:00,225 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 11:28:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:28:00,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:28:00,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:28:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:00,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:28:00,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:28:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:28:00,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:28:00,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:28:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030606484] [2024-12-02 11:28:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030606484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:00,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:00,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:28:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092054283] [2024-12-02 11:28:00,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:00,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:28:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:28:00,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:28:00,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:28:00,757 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:28:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:01,104 INFO L93 Difference]: Finished difference Result 208 states and 281 transitions. [2024-12-02 11:28:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:28:01,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 81 [2024-12-02 11:28:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:01,106 INFO L225 Difference]: With dead ends: 208 [2024-12-02 11:28:01,106 INFO L226 Difference]: Without dead ends: 160 [2024-12-02 11:28:01,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 11:28:01,108 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 57 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:01,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 173 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:28:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-12-02 11:28:01,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2024-12-02 11:28:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 98 states have internal predecessors, (120), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:28:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 192 transitions. [2024-12-02 11:28:01,135 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 192 transitions. Word has length 81 [2024-12-02 11:28:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:01,136 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 192 transitions. [2024-12-02 11:28:01,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:28:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 192 transitions. [2024-12-02 11:28:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 11:28:01,137 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:01,138 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:28:01,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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)] Forceful destruction successful, exit code 0 [2024-12-02 11:28:01,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:28:01,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:01,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1251184155, now seen corresponding path program 1 times [2024-12-02 11:28:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:28:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136790997] [2024-12-02 11:28:01,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:01,339 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 11:28:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:28:01,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:28:01,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-02 11:28:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:01,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 11:28:01,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:28:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-12-02 11:28:13,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:29:27,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:29:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136790997] [2024-12-02 11:29:27,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136790997] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902891184] [2024-12-02 11:29:27,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:27,551 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 11:29:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 11:29:27,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 11:29:27,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 11:29:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:27,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:29:27,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:30:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 36 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:30:10,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:31:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1902891184] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:37,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:31:37,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 31 [2024-12-02 11:31:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749121102] [2024-12-02 11:31:37,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 11:31:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:31:37,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 11:31:37,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1710, Unknown=2, NotChecked=0, Total=1980 [2024-12-02 11:31:37,362 INFO L87 Difference]: Start difference. First operand 143 states and 192 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 30 states have internal predecessors, (66), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-12-02 11:32:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:18,577 INFO L93 Difference]: Finished difference Result 283 states and 383 transitions. [2024-12-02 11:32:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 11:32:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 30 states have internal predecessors, (66), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 81 [2024-12-02 11:32:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:18,586 INFO L225 Difference]: With dead ends: 283 [2024-12-02 11:32:18,586 INFO L226 Difference]: Without dead ends: 189 [2024-12-02 11:32:18,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 167.3s TimeCoverageRelationStatistics Valid=728, Invalid=3826, Unknown=2, NotChecked=0, Total=4556 [2024-12-02 11:32:18,589 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 109 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:18,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 556 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-12-02 11:32:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-12-02 11:32:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 151. [2024-12-02 11:32:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:32:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2024-12-02 11:32:18,618 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 81 [2024-12-02 11:32:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:18,618 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2024-12-02 11:32:18,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 30 states have internal predecessors, (66), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-12-02 11:32:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2024-12-02 11:32:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 11:32:18,620 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:18,620 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:32:18,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-12-02 11:32:18,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-12-02 11:32:19,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:32:19,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:19,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1254185171, now seen corresponding path program 1 times [2024-12-02 11:32:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:32:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339138340] [2024-12-02 11:32:19,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:19,022 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 11:32:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:32:19,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:32:19,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-12-02 11:32:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:19,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:32:19,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 11:32:47,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:33:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:33:20,333 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:33:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339138340] [2024-12-02 11:33:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339138340] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:33:20,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:33:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2024-12-02 11:33:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626224987] [2024-12-02 11:33:20,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:33:20,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:33:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:33:20,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:33:20,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-12-02 11:33:20,335 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:33:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:33:25,430 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-12-02 11:33:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:33:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 82 [2024-12-02 11:33:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:33:25,438 INFO L225 Difference]: With dead ends: 186 [2024-12-02 11:33:25,439 INFO L226 Difference]: Without dead ends: 184 [2024-12-02 11:33:25,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:33:25,440 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 38 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:33:25,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 264 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 11:33:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-12-02 11:33:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 151. [2024-12-02 11:33:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:33:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2024-12-02 11:33:25,462 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 82 [2024-12-02 11:33:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:33:25,463 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2024-12-02 11:33:25,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:33:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2024-12-02 11:33:25,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 11:33:25,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:33:25,464 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:33:25,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-12-02 11:33:25,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:33:25,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:33:25,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:33:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 520822191, now seen corresponding path program 1 times [2024-12-02 11:33:25,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:33:25,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3390248] [2024-12-02 11:33:25,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:25,666 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 11:33:25,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:33:25,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:33:25,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-12-02 11:33:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:25,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:33:25,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:33:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 11:33:45,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 11:34:16,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3390248] [2024-12-02 11:34:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3390248] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:34:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 31 [2024-12-02 11:34:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673706937] [2024-12-02 11:34:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:16,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:34:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:16,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:34:16,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-12-02 11:34:16,766 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:34:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:21,772 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2024-12-02 11:34:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:34:21,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 82 [2024-12-02 11:34:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:21,780 INFO L225 Difference]: With dead ends: 182 [2024-12-02 11:34:21,780 INFO L226 Difference]: Without dead ends: 180 [2024-12-02 11:34:21,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 11:34:21,781 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 63 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:21,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 248 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 11:34:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-12-02 11:34:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 147. [2024-12-02 11:34:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 102 states have internal predecessors, (124), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:34:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2024-12-02 11:34:21,793 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 82 [2024-12-02 11:34:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:21,793 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2024-12-02 11:34:21,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 11:34:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2024-12-02 11:34:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 11:34:21,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:21,794 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:21,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-12-02 11:34:21,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:34:21,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:21,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash -22034899, now seen corresponding path program 1 times [2024-12-02 11:34:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582410774] [2024-12-02 11:34:21,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:21,995 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 11:34:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:34:21,997 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:34:21,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-12-02 11:34:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:22,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 11:34:22,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-12-02 11:34:42,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:36:01,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:36:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582410774] [2024-12-02 11:36:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582410774] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:36:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685692956] [2024-12-02 11:36:01,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:36:01,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 11:36:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 11:36:01,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 11:36:01,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-12-02 11:36:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:36:01,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 11:36:01,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:36:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-12-02 11:36:38,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:37:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [685692956] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:37:29,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:37:29,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2024-12-02 11:37:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320927514] [2024-12-02 11:37:29,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:37:29,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 11:37:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:37:29,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 11:37:29,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 11:37:29,933 INFO L87 Difference]: Start difference. First operand 147 states and 196 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 11:37:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:37:53,390 INFO L93 Difference]: Finished difference Result 185 states and 237 transitions. [2024-12-02 11:37:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 11:37:53,396 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 82 [2024-12-02 11:37:53,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:37:53,397 INFO L225 Difference]: With dead ends: 185 [2024-12-02 11:37:53,397 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 11:37:53,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 109.8s TimeCoverageRelationStatistics Valid=443, Invalid=2209, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 11:37:53,398 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:37:53,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 549 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 11:37:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 11:37:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 147. [2024-12-02 11:37:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 102 states have internal predecessors, (124), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:37:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2024-12-02 11:37:53,414 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 82 [2024-12-02 11:37:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:37:53,414 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2024-12-02 11:37:53,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 11:37:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2024-12-02 11:37:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 11:37:53,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:37:53,415 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:53,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-12-02 11:37:53,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-12-02 11:37:53,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:37:53,816 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:37:53,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1752972463, now seen corresponding path program 1 times [2024-12-02 11:37:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:37:53,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417812360] [2024-12-02 11:37:53,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:53,817 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 11:37:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:37:53,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/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 11:37:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94cd6ce4-7b1e-41a5-a3c0-39caae5470b5/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-12-02 11:37:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:53,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 11:37:53,911 INFO L279 TraceCheckSpWp]: Computing forward predicates...