./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB --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 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:16,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:16,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:16,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:16,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:16,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:16,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:16,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:16,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:16,801 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:16,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:16,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:16,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:16,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:16,803 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:16,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:16,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:16,804 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:16,805 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:16,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:16,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:16,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:16,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:16,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:16,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:16,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:16,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:16,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:16,808 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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 [2024-11-27 19:50:17,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:17,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:17,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:17,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:17,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:17,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:20,159 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/d444ef19c/34d8850f02db45bda50760ec32cb1416/FLAG325782d84 [2024-11-27 19:50:20,476 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:20,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:20,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/d444ef19c/34d8850f02db45bda50760ec32cb1416/FLAG325782d84 [2024-11-27 19:50:20,514 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/d444ef19c/34d8850f02db45bda50760ec32cb1416 [2024-11-27 19:50:20,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:20,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:20,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:20,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:20,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:20,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb23770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20, skipping insertion in model container [2024-11-27 19:50:20,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:20,715 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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-11-27 19:50:20,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:20,800 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:20,810 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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-11-27 19:50:20,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:20,869 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:20,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20 WrapperNode [2024-11-27 19:50:20,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:20,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:20,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:20,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:20,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,930 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-11-27 19:50:20,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:20,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:20,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:20,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:20,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,956 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]. [2024-11-27 19:50:20,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,962 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:20,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:20,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:20,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:20,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (1/1) ... [2024-11-27 19:50:20,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:21,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:21,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 19:50:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 19:50:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:21,102 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:21,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:21,381 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:21,382 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:21,394 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:21,394 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:50:21,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:21 BoogieIcfgContainer [2024-11-27 19:50:21,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:21,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:21,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:21,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:21,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:20" (1/3) ... [2024-11-27 19:50:21,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64184065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:21, skipping insertion in model container [2024-11-27 19:50:21,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:20" (2/3) ... [2024-11-27 19:50:21,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64184065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:21, skipping insertion in model container [2024-11-27 19:50:21,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:21" (3/3) ... [2024-11-27 19:50:21,406 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:21,423 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:21,425 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-21.i that has 2 procedures, 41 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:50:21,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:21,509 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;@17cd916a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:21,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 19:50:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:21,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:21,527 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:21,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1174544175, now seen corresponding path program 1 times [2024-11-27 19:50:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036521534] [2024-11-27 19:50:21,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-27 19:50:21,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:21,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036521534] [2024-11-27 19:50:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036521534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:21,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433995368] [2024-11-27 19:50:21,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:21,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:21,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:21,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 19:50:21,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-27 19:50:22,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:22,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433995368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:22,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 19:50:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598893971] [2024-11-27 19:50:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:22,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:50:22,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:22,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:50:22,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:50:22,046 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 19:50:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:22,076 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2024-11-27 19:50:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:50:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2024-11-27 19:50:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:22,087 INFO L225 Difference]: With dead ends: 75 [2024-11-27 19:50:22,087 INFO L226 Difference]: Without dead ends: 37 [2024-11-27 19:50:22,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:50:22,096 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:22,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-27 19:50:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-27 19:50:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 19:50:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-11-27 19:50:22,147 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 64 [2024-11-27 19:50:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:22,148 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-11-27 19:50:22,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 19:50:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-11-27 19:50:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:22,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:22,152 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:22,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:22,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 19:50:22,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:22,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash -562669323, now seen corresponding path program 1 times [2024-11-27 19:50:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921467549] [2024-11-27 19:50:22,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:50:22,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:22,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921467549] [2024-11-27 19:50:22,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921467549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:22,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190936675] [2024-11-27 19:50:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:22,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:22,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:22,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:22,674 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:22,708 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2024-11-27 19:50:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:22,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-11-27 19:50:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:22,710 INFO L225 Difference]: With dead ends: 71 [2024-11-27 19:50:22,710 INFO L226 Difference]: Without dead ends: 37 [2024-11-27 19:50:22,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:22,712 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:22,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-27 19:50:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-27 19:50:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 19:50:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-11-27 19:50:22,726 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 64 [2024-11-27 19:50:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:22,728 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-11-27 19:50:22,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-11-27 19:50:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:22,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:22,732 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:22,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:22,733 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:22,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash -505411021, now seen corresponding path program 1 times [2024-11-27 19:50:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:22,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273769823] [2024-11-27 19:50:22,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:50:24,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273769823] [2024-11-27 19:50:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273769823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:50:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397190655] [2024-11-27 19:50:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:24,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:50:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:24,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:50:24,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:24,561 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:24,875 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2024-11-27 19:50:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-11-27 19:50:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:24,880 INFO L225 Difference]: With dead ends: 84 [2024-11-27 19:50:24,880 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 19:50:24,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:24,881 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 61 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:24,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 287 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 19:50:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2024-11-27 19:50:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 19:50:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-11-27 19:50:24,909 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 64 [2024-11-27 19:50:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:24,910 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-11-27 19:50:24,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-11-27 19:50:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:50:24,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:24,915 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:24,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:24,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:24,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1278414269, now seen corresponding path program 1 times [2024-11-27 19:50:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487809299] [2024-11-27 19:50:24,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:50:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:26,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487809299] [2024-11-27 19:50:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487809299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:26,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:50:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730831590] [2024-11-27 19:50:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:26,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:50:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:26,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:50:26,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:50:26,030 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:26,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:26,437 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2024-11-27 19:50:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:50:26,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-27 19:50:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:26,439 INFO L225 Difference]: With dead ends: 88 [2024-11-27 19:50:26,439 INFO L226 Difference]: Without dead ends: 86 [2024-11-27 19:50:26,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:26,440 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:26,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 297 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-27 19:50:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-11-27 19:50:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.173913043478261) internal successors, (54), 47 states have internal predecessors, (54), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 19:50:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-11-27 19:50:26,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 65 [2024-11-27 19:50:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:26,468 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-11-27 19:50:26,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-11-27 19:50:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:50:26,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:26,469 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:26,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:26,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:26,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 434558742, now seen corresponding path program 1 times [2024-11-27 19:50:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701429428] [2024-11-27 19:50:26,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 19:50:26,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709987625] [2024-11-27 19:50:26,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:26,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:26,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:26,653 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:50:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:26,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 19:50:26,720 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 19:50:26,721 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 19:50:26,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:50:26,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:26,926 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-27 19:50:26,998 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 19:50:27,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 07:50:27 BoogieIcfgContainer [2024-11-27 19:50:27,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 19:50:27,004 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 19:50:27,004 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 19:50:27,004 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 19:50:27,005 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:21" (3/4) ... [2024-11-27 19:50:27,009 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 19:50:27,010 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 19:50:27,013 INFO L158 Benchmark]: Toolchain (without parser) took 6492.80ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 92.0MB in the beginning and 119.5MB in the end (delta: -27.5MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2024-11-27 19:50:27,014 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.3MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:27,014 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.66ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 79.3MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:50:27,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.49ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:27,015 INFO L158 Benchmark]: Boogie Preprocessor took 47.96ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 74.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:27,015 INFO L158 Benchmark]: RCFGBuilder took 413.99ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 61.0MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:50:27,016 INFO L158 Benchmark]: TraceAbstraction took 5605.54ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 60.4MB in the beginning and 119.6MB in the end (delta: -59.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:27,016 INFO L158 Benchmark]: Witness Printer took 6.81ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 119.5MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:27,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.3MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.66ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 79.3MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.49ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.96ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 74.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.99ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 61.0MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5605.54ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 60.4MB in the beginning and 119.6MB in the end (delta: -59.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.81ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 119.5MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 85, overapproximation of someBinaryDOUBLEComparisonOperation at line 70, overapproximation of someBinaryDOUBLEComparisonOperation at line 72, overapproximation of someBinaryDOUBLEComparisonOperation at line 74. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 32; [L23] unsigned char var_1_7 = 1; [L24] signed char var_1_8 = -32; [L25] signed char var_1_9 = -8; [L26] unsigned char var_1_10 = 2; [L27] double var_1_11 = 15.6; [L28] double var_1_12 = 15.4; [L29] double var_1_13 = 32.2; [L30] unsigned char var_1_14 = 5; [L31] unsigned short int last_1_var_1_1 = 32; [L32] signed char last_1_var_1_8 = -32; [L33] unsigned char last_1_var_1_10 = 2; VAL [isInitial=0, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L89] isInitial = 1 [L90] FCALL initially() [L92] CALL updateLastVariables() [L80] last_1_var_1_1 = var_1_1 [L81] last_1_var_1_8 = var_1_8 [L82] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L92] RET updateLastVariables() [L93] CALL updateVariables() [L63] var_1_7 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L64] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L65] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L65] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L66] var_1_9 = __VERIFIER_nondet_char() [L67] CALL assume_abort_if_not(var_1_9 >= -126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L67] RET assume_abort_if_not(var_1_9 >= -126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L68] CALL assume_abort_if_not(var_1_9 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L68] RET assume_abort_if_not(var_1_9 <= 126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L69] var_1_11 = __VERIFIER_nondet_double() [L70] CALL assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L70] RET assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L71] var_1_12 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L72] RET assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L75] var_1_14 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L76] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L77] CALL assume_abort_if_not(var_1_14 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L77] RET assume_abort_if_not(var_1_14 <= 254) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L93] RET updateVariables() [L94] CALL step() [L37] signed long int stepLocal_2 = (((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)); [L38] unsigned char stepLocal_1 = var_1_7; VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_1=1, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L39] COND TRUE ((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_1=1, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L40] COND FALSE !(stepLocal_1 && (last_1_var_1_8 >= var_1_9)) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L48] signed long int stepLocal_0 = ((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)); VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_0=2, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L49] COND FALSE !(last_1_var_1_10 < stepLocal_0) [L52] var_1_8 = var_1_9 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=0, var_1_9=0] [L54] COND FALSE !((var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8)) [L59] var_1_1 = var_1_10 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return ((((var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8)) ? (var_1_7 ? (var_1_1 == ((unsigned short int) var_1_10)) : 1) : (var_1_1 == ((unsigned short int) var_1_10))) && ((last_1_var_1_10 < (((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)))) ? (var_1_8 == ((signed char) ((((var_1_9) < 0 ) ? -(var_1_9) : (var_1_9))))) : (var_1_8 == ((signed char) var_1_9)))) && ((((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13) ? ((var_1_7 && (last_1_var_1_8 >= var_1_9)) ? ((last_1_var_1_1 <= ((((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)))) ? (var_1_10 == ((unsigned char) var_1_14)) : 1) : 1) : (var_1_10 == ((unsigned char) var_1_14))) ; VAL [\result=0, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 728 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 482 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 246 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, InterpolantAutomatonStates: 20, 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, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 704/720 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 [2024-11-27 19:50:27,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB --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 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:29,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:30,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-27 19:50:30,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:30,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:30,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:30,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:30,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:30,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:30,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:30,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:30,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:30,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:30,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:30,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 19:50:30,063 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 19:50:30,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:30,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:30,065 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:30,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:30,065 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:30,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:30,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:30,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:30,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:30,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:30,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:30,067 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 [2024-11-27 19:50:30,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:30,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:30,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:30,458 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:30,458 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:30,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:33,457 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/001781059/2729d5175ed647e6aee7dd1d790d3f8f/FLAG90dbb53b7 [2024-11-27 19:50:33,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:33,765 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:33,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/001781059/2729d5175ed647e6aee7dd1d790d3f8f/FLAG90dbb53b7 [2024-11-27 19:50:33,800 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/data/001781059/2729d5175ed647e6aee7dd1d790d3f8f [2024-11-27 19:50:33,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:33,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:33,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:33,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:33,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:33,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a20f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33, skipping insertion in model container [2024-11-27 19:50:33,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,841 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:34,039 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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-11-27 19:50:34,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:34,140 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:34,155 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_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-11-27 19:50:34,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:34,219 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:34,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34 WrapperNode [2024-11-27 19:50:34,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:34,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:34,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:34,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:34,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,278 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-27 19:50:34,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:34,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:34,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:34,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:34,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,307 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]. [2024-11-27 19:50:34,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:34,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:34,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:34,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:34,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (1/1) ... [2024-11-27 19:50:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:34,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:34,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:34,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 19:50:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 19:50:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 19:50:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:34,493 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:34,495 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:34,904 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:34,904 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:34,919 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:34,921 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:50:34,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:34 BoogieIcfgContainer [2024-11-27 19:50:34,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:34,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:34,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:34,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:34,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:33" (1/3) ... [2024-11-27 19:50:34,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd5125c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:34, skipping insertion in model container [2024-11-27 19:50:34,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:34" (2/3) ... [2024-11-27 19:50:34,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd5125c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:34, skipping insertion in model container [2024-11-27 19:50:34,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:34" (3/3) ... [2024-11-27 19:50:34,939 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-21.i [2024-11-27 19:50:34,959 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:34,961 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-21.i that has 2 procedures, 41 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:50:35,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:35,045 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;@3e95593f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:35,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 19:50:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:35,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:35,063 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:35,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:35,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1174544175, now seen corresponding path program 1 times [2024-11-27 19:50:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:50:35,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091990766] [2024-11-27 19:50:35,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:35,087 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 [2024-11-27 19:50:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:50:35,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:50:35,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:50:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:35,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 19:50:35,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 19:50:35,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:35,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:50:35,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091990766] [2024-11-27 19:50:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091990766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:35,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853964621] [2024-11-27 19:50:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:35,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:50:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:50:35,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:50:35,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:50:35,416 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 19:50:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:35,443 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2024-11-27 19:50:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:50:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2024-11-27 19:50:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:35,451 INFO L225 Difference]: With dead ends: 75 [2024-11-27 19:50:35,451 INFO L226 Difference]: Without dead ends: 37 [2024-11-27 19:50:35,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:50:35,458 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:35,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-27 19:50:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-27 19:50:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 19:50:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-11-27 19:50:35,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 64 [2024-11-27 19:50:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:35,509 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-11-27 19:50:35,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 19:50:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-11-27 19:50:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:35,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:35,514 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:35,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:50:35,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:50:35,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:35,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash -562669323, now seen corresponding path program 1 times [2024-11-27 19:50:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:50:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631265178] [2024-11-27 19:50:35,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:35,721 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 [2024-11-27 19:50:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:50:35,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:50:35,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-27 19:50:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:35,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:50:35,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:50:36,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:36,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:50:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631265178] [2024-11-27 19:50:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631265178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:36,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152992287] [2024-11-27 19:50:36,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:36,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:50:36,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:36,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:36,273 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:36,666 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2024-11-27 19:50:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:36,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-11-27 19:50:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:36,673 INFO L225 Difference]: With dead ends: 116 [2024-11-27 19:50:36,675 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 19:50:36,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:36,676 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:36,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 167 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:50:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 19:50:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2024-11-27 19:50:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-27 19:50:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-11-27 19:50:36,709 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 64 [2024-11-27 19:50:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:36,712 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-11-27 19:50:36,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:50:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-11-27 19:50:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:36,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:36,714 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:36,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-27 19:50:36,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:50:36,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:36,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash -505411021, now seen corresponding path program 1 times [2024-11-27 19:50:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:50:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722868721] [2024-11-27 19:50:36,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:36,916 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 [2024-11-27 19:50:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:50:36,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:50:36,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:50:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:37,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:50:37,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:51:13,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:51:13,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:51:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722868721] [2024-11-27 19:51:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722868721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:51:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627003507] [2024-11-27 19:51:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:13,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:51:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:51:13,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:51:13,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:51:13,824 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:51:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:14,379 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2024-11-27 19:51:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:51:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-11-27 19:51:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:14,382 INFO L225 Difference]: With dead ends: 124 [2024-11-27 19:51:14,383 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 19:51:14,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:51:14,384 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:14,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 215 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:51:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 19:51:14,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2024-11-27 19:51:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:51:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2024-11-27 19:51:14,405 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 64 [2024-11-27 19:51:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:14,406 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2024-11-27 19:51:14,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:51:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2024-11-27 19:51:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:51:14,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:14,408 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:14,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:14,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:14,612 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:14,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1278414269, now seen corresponding path program 1 times [2024-11-27 19:51:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:51:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961046789] [2024-11-27 19:51:14,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:14,613 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 [2024-11-27 19:51:14,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:51:14,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:51:14,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:14,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:51:14,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:51:29,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:51:29,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:51:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961046789] [2024-11-27 19:51:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961046789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:29,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:29,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 19:51:29,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648239895] [2024-11-27 19:51:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:29,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:51:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:51:29,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:51:29,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:51:29,820 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:51:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:30,514 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2024-11-27 19:51:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:51:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-27 19:51:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:30,518 INFO L225 Difference]: With dead ends: 129 [2024-11-27 19:51:30,518 INFO L226 Difference]: Without dead ends: 127 [2024-11-27 19:51:30,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:51:30,520 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 62 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:30,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 225 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:51:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-27 19:51:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2024-11-27 19:51:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:51:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2024-11-27 19:51:30,540 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 65 [2024-11-27 19:51:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:30,540 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2024-11-27 19:51:30,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:51:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2024-11-27 19:51:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:51:30,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:30,542 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:30,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:30,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:30,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:30,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1276567227, now seen corresponding path program 1 times [2024-11-27 19:51:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:51:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076432496] [2024-11-27 19:51:30,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:30,744 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 [2024-11-27 19:51:30,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:51:30,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:51:30,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:51:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:30,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:51:30,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:52:00,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:00,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:52:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076432496] [2024-11-27 19:52:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076432496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 19:52:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674255017] [2024-11-27 19:52:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:00,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:52:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:52:00,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:52:00,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:52:00,289 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:00,848 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2024-11-27 19:52:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:52:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-27 19:52:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:00,853 INFO L225 Difference]: With dead ends: 127 [2024-11-27 19:52:00,853 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 19:52:00,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:52:00,854 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 54 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:00,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 232 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 19:52:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2024-11-27 19:52:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:52:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2024-11-27 19:52:00,871 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 65 [2024-11-27 19:52:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:00,872 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2024-11-27 19:52:00,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2024-11-27 19:52:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:52:00,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:00,873 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:00,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 19:52:01,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:01,074 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:01,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 434558742, now seen corresponding path program 1 times [2024-11-27 19:52:01,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:52:01,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532013953] [2024-11-27 19:52:01,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:01,075 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 [2024-11-27 19:52:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:52:01,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:52:01,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:01,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:52:01,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:52:30,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:30,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:52:30,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532013953] [2024-11-27 19:52:30,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532013953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:30,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:52:30,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725104641] [2024-11-27 19:52:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:30,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:52:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:52:30,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:52:30,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:52:30,674 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:32,152 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-11-27 19:52:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:52:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-27 19:52:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:32,154 INFO L225 Difference]: With dead ends: 124 [2024-11-27 19:52:32,154 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 19:52:32,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:52:32,155 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 49 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:32,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 240 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:52:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 19:52:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2024-11-27 19:52:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 80 states have (on average 1.2375) internal successors, (99), 80 states have internal predecessors, (99), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:52:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 153 transitions. [2024-11-27 19:52:32,172 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 153 transitions. Word has length 65 [2024-11-27 19:52:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 153 transitions. [2024-11-27 19:52:32,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 153 transitions. [2024-11-27 19:52:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 19:52:32,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:32,173 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:32,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:32,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:32,375 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:32,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash 352705850, now seen corresponding path program 1 times [2024-11-27 19:52:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:52:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691371348] [2024-11-27 19:52:32,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:32,376 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 [2024-11-27 19:52:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:52:32,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:52:32,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-27 19:52:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:32,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:52:32,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:52:48,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:48,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:52:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691371348] [2024-11-27 19:52:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691371348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:48,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 19:52:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36117421] [2024-11-27 19:52:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:48,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:52:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:52:48,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:52:48,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:52:48,594 INFO L87 Difference]: Start difference. First operand 112 states and 153 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:50,138 INFO L93 Difference]: Finished difference Result 129 states and 171 transitions. [2024-11-27 19:52:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:52:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-27 19:52:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:50,141 INFO L225 Difference]: With dead ends: 129 [2024-11-27 19:52:50,141 INFO L226 Difference]: Without dead ends: 127 [2024-11-27 19:52:50,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:50,142 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:50,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 267 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 19:52:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-27 19:52:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2024-11-27 19:52:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:52:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2024-11-27 19:52:50,162 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 66 [2024-11-27 19:52:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:50,162 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2024-11-27 19:52:50,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:52:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2024-11-27 19:52:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 19:52:50,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:50,164 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:50,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-27 19:52:50,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:50,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:50,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 350858808, now seen corresponding path program 1 times [2024-11-27 19:52:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:52:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971660583] [2024-11-27 19:52:50,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:50,370 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 [2024-11-27 19:52:50,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:52:50,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:52:50,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:52:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:50,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:52:50,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 19:53:18,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:18,702 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:53:18,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971660583] [2024-11-27 19:53:18,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971660583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:53:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 19:53:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844469586] [2024-11-27 19:53:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:18,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:53:18,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:53:18,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:53:18,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:53:18,704 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:53:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:20,244 INFO L93 Difference]: Finished difference Result 127 states and 169 transitions. [2024-11-27 19:53:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:53:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-27 19:53:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:20,246 INFO L225 Difference]: With dead ends: 127 [2024-11-27 19:53:20,246 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 19:53:20,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:20,246 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:20,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 275 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:53:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 19:53:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2024-11-27 19:53:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 19:53:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2024-11-27 19:53:20,289 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 66 [2024-11-27 19:53:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:20,290 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2024-11-27 19:53:20,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:53:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2024-11-27 19:53:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 19:53:20,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:20,292 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:20,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 19:53:20,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:53:20,496 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:20,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash -154222686, now seen corresponding path program 1 times [2024-11-27 19:53:20,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:53:20,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530379647] [2024-11-27 19:53:20,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:20,497 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 [2024-11-27 19:53:20,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:53:20,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:53:20,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:53:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:20,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:53:20,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-27 19:53:20,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:20,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:53:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530379647] [2024-11-27 19:53:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530379647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:20,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:53:20,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:53:20,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305361051] [2024-11-27 19:53:20,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:20,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:53:20,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:53:20,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:53:20,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:53:20,672 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:53:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:20,846 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2024-11-27 19:53:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:53:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 125 [2024-11-27 19:53:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:20,849 INFO L225 Difference]: With dead ends: 175 [2024-11-27 19:53:20,849 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 19:53:20,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:53:20,850 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:20,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:53:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 19:53:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2024-11-27 19:53:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 97 states have internal predecessors, (119), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 19:53:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 187 transitions. [2024-11-27 19:53:20,867 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 187 transitions. Word has length 125 [2024-11-27 19:53:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:20,867 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 187 transitions. [2024-11-27 19:53:20,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:53:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 187 transitions. [2024-11-27 19:53:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 19:53:20,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:20,872 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:20,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:53:21,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:53:21,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:21,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash -96964384, now seen corresponding path program 1 times [2024-11-27 19:53:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:53:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298331363] [2024-11-27 19:53:21,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:21,075 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 [2024-11-27 19:53:21,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:53:21,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:53:21,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:53:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:21,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:53:21,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-27 19:57:06,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:57:06,371 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:57:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298331363] [2024-11-27 19:57:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298331363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:57:06,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:57:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:57:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096902488] [2024-11-27 19:57:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:06,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:57:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:57:06,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:57:06,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:57:06,373 INFO L87 Difference]: Start difference. First operand 136 states and 187 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:57:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:06,890 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2024-11-27 19:57:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:57:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 125 [2024-11-27 19:57:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:06,893 INFO L225 Difference]: With dead ends: 161 [2024-11-27 19:57:06,893 INFO L226 Difference]: Without dead ends: 159 [2024-11-27 19:57:06,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:57:06,894 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 49 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:06,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 321 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:57:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-27 19:57:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 140. [2024-11-27 19:57:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 100 states have internal predecessors, (122), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 19:57:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-11-27 19:57:06,910 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 125 [2024-11-27 19:57:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:06,911 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-11-27 19:57:06,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:57:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-11-27 19:57:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 19:57:06,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:06,915 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:06,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:57:07,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:57:07,115 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:07,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1055358128, now seen corresponding path program 1 times [2024-11-27 19:57:07,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:57:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146171800] [2024-11-27 19:57:07,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:07,117 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 [2024-11-27 19:57:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:57:07,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:57:07,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-27 19:57:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:07,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:57:07,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-27 19:58:17,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:58:17,984 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 19:58:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146171800] [2024-11-27 19:58:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146171800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:58:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:58:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164059894] [2024-11-27 19:58:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:17,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:58:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 19:58:17,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:58:17,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:58:17,986 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:58:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:18,530 INFO L93 Difference]: Finished difference Result 167 states and 217 transitions. [2024-11-27 19:58:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:58:18,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-11-27 19:58:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:18,533 INFO L225 Difference]: With dead ends: 167 [2024-11-27 19:58:18,533 INFO L226 Difference]: Without dead ends: 165 [2024-11-27 19:58:18,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:58:18,534 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:18,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 334 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:58:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-27 19:58:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 140. [2024-11-27 19:58:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 100 states have internal predecessors, (122), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 19:58:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-11-27 19:58:18,552 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 126 [2024-11-27 19:58:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:18,553 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-11-27 19:58:18,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 19:58:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-11-27 19:58:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 19:58:18,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:18,555 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:18,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-27 19:58:18,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:58:18,755 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:18,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1053511086, now seen corresponding path program 1 times [2024-11-27 19:58:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:58:18,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993708444] [2024-11-27 19:58:18,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:18,756 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 [2024-11-27 19:58:18,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 19:58:18,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 19:58:18,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 19:58:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:18,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:58:18,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-27 20:01:47,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:47,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:47,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993708444] [2024-11-27 20:01:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993708444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:47,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:01:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375880142] [2024-11-27 20:01:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:47,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:01:47,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:47,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:01:47,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:01:47,537 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 20:01:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:48,097 INFO L93 Difference]: Finished difference Result 169 states and 220 transitions. [2024-11-27 20:01:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:01:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-11-27 20:01:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:48,099 INFO L225 Difference]: With dead ends: 169 [2024-11-27 20:01:48,099 INFO L226 Difference]: Without dead ends: 167 [2024-11-27 20:01:48,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:01:48,100 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:48,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 328 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:01:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-27 20:01:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2024-11-27 20:01:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 20:01:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2024-11-27 20:01:48,116 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 126 [2024-11-27 20:01:48,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:48,116 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2024-11-27 20:01:48,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 20:01:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2024-11-27 20:01:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 20:01:48,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:48,118 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:48,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 20:01:48,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:01:48,319 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:48,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash 154244299, now seen corresponding path program 1 times [2024-11-27 20:01:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:48,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223412972] [2024-11-27 20:01:48,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:48,320 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 [2024-11-27 20:01:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:01:48,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:01:48,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-27 20:01:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:48,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:01:48,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2024-11-27 20:01:48,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:48,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223412972] [2024-11-27 20:01:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223412972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:48,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:48,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716007150] [2024-11-27 20:01:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:48,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:48,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:48,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:48,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:48,487 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 20:01:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:48,528 INFO L93 Difference]: Finished difference Result 196 states and 264 transitions. [2024-11-27 20:01:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-11-27 20:01:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:48,533 INFO L225 Difference]: With dead ends: 196 [2024-11-27 20:01:48,533 INFO L226 Difference]: Without dead ends: 133 [2024-11-27 20:01:48,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:48,534 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:48,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-27 20:01:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2024-11-27 20:01:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 71 states have internal predecessors, (83), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 20:01:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2024-11-27 20:01:48,546 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 126 [2024-11-27 20:01:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:48,547 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2024-11-27 20:01:48,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 20:01:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2024-11-27 20:01:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 20:01:48,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:48,549 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:48,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-27 20:01:48,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:01:48,749 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:48,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 211502601, now seen corresponding path program 1 times [2024-11-27 20:01:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55082066] [2024-11-27 20:01:48,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:48,750 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 [2024-11-27 20:01:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:01:48,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:01:48,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572e07dc-7dc9-4b1a-ae01-79cf4aedf8c3/bin/uautomizer-verify-aQ6SnzHsRB/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 (15)] Waiting until timeout for monitored process [2024-11-27 20:01:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:48,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:01:48,955 INFO L279 TraceCheckSpWp]: Computing forward predicates...