./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c --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_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/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_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/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_38814d20-d77c-48bd-8096-bade3478a09b/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 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:38:28,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:38:28,373 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:38:28,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:38:28,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:38:28,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:38:28,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:38:28,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:38:28,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:38:28,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:38:28,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:38:28,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:38:28,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:38:28,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:38:28,414 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:38:28,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:38:28,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:38:28,416 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:38:28,416 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:38:28,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:28,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:28,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:28,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:28,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:38:28,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:28,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:38:28,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:38:28,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:38:28,419 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_38814d20-d77c-48bd-8096-bade3478a09b/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 -> 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b [2024-11-27 23:38:28,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:38:28,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:38:28,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:38:28,761 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:38:28,761 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:38:28,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-11-27 23:38:32,299 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/data/104d32396/4980ca3f002947e3a926f8caabc9c303/FLAG4fa2eb715 [2024-11-27 23:38:32,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:38:32,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-11-27 23:38:32,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/data/104d32396/4980ca3f002947e3a926f8caabc9c303/FLAG4fa2eb715 [2024-11-27 23:38:32,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/data/104d32396/4980ca3f002947e3a926f8caabc9c303 [2024-11-27 23:38:32,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:38:32,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:38:32,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:32,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:38:32,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:38:32,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df16374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32, skipping insertion in model container [2024-11-27 23:38:32,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:38:32,990 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_38814d20-d77c-48bd-8096-bade3478a09b/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-27 23:38:33,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:33,030 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:38:33,042 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_38814d20-d77c-48bd-8096-bade3478a09b/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-27 23:38:33,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:33,069 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:38:33,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33 WrapperNode [2024-11-27 23:38:33,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:33,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:33,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:38:33,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:38:33,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,119 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-27 23:38:33,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:33,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:38:33,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:38:33,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:38:33,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,148 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-27 23:38:33,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,154 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:38:33,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:38:33,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:38:33,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:38:33,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (1/1) ... [2024-11-27 23:38:33,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:33,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:38:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:38:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:38:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:38:33,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:38:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:38:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:38:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:38:33,362 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:38:33,365 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:38:33,664 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-27 23:38:33,664 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:38:33,684 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:38:33,684 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:38:33,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33 BoogieIcfgContainer [2024-11-27 23:38:33,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:38:33,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:38:33,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:38:33,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:38:33,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:32" (1/3) ... [2024-11-27 23:38:33,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6e8fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:33" (2/3) ... [2024-11-27 23:38:33,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6e8fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33" (3/3) ... [2024-11-27 23:38:33,708 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2024-11-27 23:38:33,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:38:33,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_4.c that has 1 procedures, 23 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:38:33,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:38:33,842 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;@3242ce67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:38:33,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:38:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:38:33,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:33,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:33,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:33,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash -345222235, now seen corresponding path program 1 times [2024-11-27 23:38:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467341070] [2024-11-27 23:38:33,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467341070] [2024-11-27 23:38:34,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467341070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:34,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:34,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643595395] [2024-11-27 23:38:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:34,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:38:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:34,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:38:34,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:38:34,185 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:34,203 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-27 23:38:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:38:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-27 23:38:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:34,218 INFO L225 Difference]: With dead ends: 43 [2024-11-27 23:38:34,219 INFO L226 Difference]: Without dead ends: 19 [2024-11-27 23:38:34,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 23:38:34,229 INFO L435 NwaCegarLoop]: 27 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, 27 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 23:38:34,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-27 23:38:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-27 23:38:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-27 23:38:34,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2024-11-27 23:38:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:34,276 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-27 23:38:34,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-27 23:38:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:38:34,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:38:34,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:34,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -738249245, now seen corresponding path program 1 times [2024-11-27 23:38:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120523541] [2024-11-27 23:38:34,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120523541] [2024-11-27 23:38:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120523541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:34,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420722033] [2024-11-27 23:38:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:34,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:34,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:34,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:34,565 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:34,697 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-27 23:38:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:34,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-27 23:38:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:34,699 INFO L225 Difference]: With dead ends: 48 [2024-11-27 23:38:34,700 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 23:38:34,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 23:38:34,702 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:34,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 23:38:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2024-11-27 23:38:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-27 23:38:34,749 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2024-11-27 23:38:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:34,749 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-27 23:38:34,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-27 23:38:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 23:38:34,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:38:34,751 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:34,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash 716753453, now seen corresponding path program 1 times [2024-11-27 23:38:34,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863133026] [2024-11-27 23:38:34,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863133026] [2024-11-27 23:38:35,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863133026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:38:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376150280] [2024-11-27 23:38:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:38:35,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:38:35,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:35,245 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,394 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-27 23:38:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:38:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-27 23:38:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,396 INFO L225 Difference]: With dead ends: 48 [2024-11-27 23:38:35,396 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 23:38:35,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:38:35,397 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 36 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 23:38:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2024-11-27 23:38:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-27 23:38:35,403 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-11-27 23:38:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,404 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-27 23:38:35,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-27 23:38:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 23:38:35,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,405 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:38:35,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:35,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,406 INFO L85 PathProgramCache]: Analyzing trace with hash 323726443, now seen corresponding path program 1 times [2024-11-27 23:38:35,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213802383] [2024-11-27 23:38:35,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:35,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213802383] [2024-11-27 23:38:35,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213802383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:35,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41709007] [2024-11-27 23:38:35,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:35,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:35,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:35,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:38:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:38:35,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:36,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41709007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:36,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-27 23:38:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974725409] [2024-11-27 23:38:36,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:36,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:38:36,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:36,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:38:36,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:38:36,127 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:36,331 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-27 23:38:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:38:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-27 23:38:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:36,333 INFO L225 Difference]: With dead ends: 78 [2024-11-27 23:38:36,333 INFO L226 Difference]: Without dead ends: 63 [2024-11-27 23:38:36,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:38:36,335 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:36,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 34 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-27 23:38:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2024-11-27 23:38:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:36,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-27 23:38:36,346 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 18 [2024-11-27 23:38:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:36,346 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-27 23:38:36,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-27 23:38:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-27 23:38:36,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:36,348 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:36,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:38:36,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:36,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:36,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1447835187, now seen corresponding path program 1 times [2024-11-27 23:38:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535691207] [2024-11-27 23:38:36,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:38:37,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535691207] [2024-11-27 23:38:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535691207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677792115] [2024-11-27 23:38:37,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:37,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:37,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:37,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:38:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:37,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:38:37,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:37,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677792115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:38,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-27 23:38:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297636908] [2024-11-27 23:38:38,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:38,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:38:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:38,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:38:38,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:38:38,131 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:39,009 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2024-11-27 23:38:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 23:38:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-27 23:38:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:39,011 INFO L225 Difference]: With dead ends: 185 [2024-11-27 23:38:39,011 INFO L226 Difference]: Without dead ends: 162 [2024-11-27 23:38:39,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:38:39,013 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 462 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:39,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 107 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:38:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-27 23:38:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 74. [2024-11-27 23:38:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-27 23:38:39,028 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 36 [2024-11-27 23:38:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:39,029 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-27 23:38:39,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-27 23:38:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:38:39,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:39,032 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:39,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:38:39,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:39,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:39,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1403517069, now seen corresponding path program 2 times [2024-11-27 23:38:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105499410] [2024-11-27 23:38:39,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:39,355 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:39,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 23:38:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105499410] [2024-11-27 23:38:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105499410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:38:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232415423] [2024-11-27 23:38:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:40,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:38:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:40,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:38:40,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:38:40,454 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:40,658 INFO L93 Difference]: Finished difference Result 210 states and 262 transitions. [2024-11-27 23:38:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:38:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 23:38:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:40,666 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:38:40,666 INFO L226 Difference]: Without dead ends: 163 [2024-11-27 23:38:40,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:38:40,668 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:40,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-27 23:38:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2024-11-27 23:38:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 127 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2024-11-27 23:38:40,706 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 72 [2024-11-27 23:38:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:40,706 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2024-11-27 23:38:40,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2024-11-27 23:38:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:38:40,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:40,708 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:40,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:38:40,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:40,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash -963177525, now seen corresponding path program 3 times [2024-11-27 23:38:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:40,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737784670] [2024-11-27 23:38:40,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:41,035 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:38:41,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 4 proven. 232 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-27 23:38:41,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737784670] [2024-11-27 23:38:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737784670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138261257] [2024-11-27 23:38:41,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:41,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:41,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:41,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:38:41,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:38:41,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:41,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 23:38:41,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-27 23:38:42,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:38:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138261257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:38:42,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-11-27 23:38:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977589172] [2024-11-27 23:38:42,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:42,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:38:42,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:42,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:38:42,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:38:42,713 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:42,869 INFO L93 Difference]: Finished difference Result 142 states and 171 transitions. [2024-11-27 23:38:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:38:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 23:38:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:42,873 INFO L225 Difference]: With dead ends: 142 [2024-11-27 23:38:42,873 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 23:38:42,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:38:42,874 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:42,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 49 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 23:38:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-27 23:38:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.20863309352518) internal successors, (168), 139 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 168 transitions. [2024-11-27 23:38:42,909 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 168 transitions. Word has length 72 [2024-11-27 23:38:42,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:42,910 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 168 transitions. [2024-11-27 23:38:42,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 168 transitions. [2024-11-27 23:38:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:38:42,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:42,917 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 7, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:42,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:43,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:38:43,118 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:43,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1639901195, now seen corresponding path program 1 times [2024-11-27 23:38:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218165765] [2024-11-27 23:38:43,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 157 proven. 35 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-27 23:38:43,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:43,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218165765] [2024-11-27 23:38:43,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218165765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:43,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360077273] [2024-11-27 23:38:43,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:43,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:43,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:43,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:38:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:44,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 23:38:44,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:38:44,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:38:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360077273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:45,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 30 [2024-11-27 23:38:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281827190] [2024-11-27 23:38:45,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:45,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-27 23:38:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:45,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-27 23:38:45,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=574, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:38:45,313 INFO L87 Difference]: Start difference. First operand 140 states and 168 transitions. Second operand has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:49,229 INFO L93 Difference]: Finished difference Result 873 states and 1078 transitions. [2024-11-27 23:38:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-27 23:38:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-27 23:38:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:49,234 INFO L225 Difference]: With dead ends: 873 [2024-11-27 23:38:49,234 INFO L226 Difference]: Without dead ends: 796 [2024-11-27 23:38:49,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2591, Invalid=4719, Unknown=0, NotChecked=0, Total=7310 [2024-11-27 23:38:49,240 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 738 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:49,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 161 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:38:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-27 23:38:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 192. [2024-11-27 23:38:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.2513089005235603) internal successors, (239), 191 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2024-11-27 23:38:49,272 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 78 [2024-11-27 23:38:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:49,272 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2024-11-27 23:38:49,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2024-11-27 23:38:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 23:38:49,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:49,277 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:49,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:38:49,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:38:49,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:49,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1039551255, now seen corresponding path program 2 times [2024-11-27 23:38:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708104211] [2024-11-27 23:38:49,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:49,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:49,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:38:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708104211] [2024-11-27 23:38:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708104211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71626529] [2024-11-27 23:38:52,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:52,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:52,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:52,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:52,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:38:52,296 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:52,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:52,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:38:52,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:38:53,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:38:55,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71626529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:55,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:55,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2024-11-27 23:38:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618550181] [2024-11-27 23:38:55,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:55,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-27 23:38:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:55,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-27 23:38:55,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 23:38:55,219 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:58,719 INFO L93 Difference]: Finished difference Result 6120 states and 7584 transitions. [2024-11-27 23:38:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 23:38:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-27 23:38:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:58,744 INFO L225 Difference]: With dead ends: 6120 [2024-11-27 23:38:58,744 INFO L226 Difference]: Without dead ends: 5943 [2024-11-27 23:38:58,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 23:38:58,752 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 2368 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:58,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 409 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2024-11-27 23:38:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 1176. [2024-11-27 23:38:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.1727659574468086) internal successors, (1378), 1175 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1378 transitions. [2024-11-27 23:38:58,931 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1378 transitions. Word has length 150 [2024-11-27 23:38:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:58,931 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1378 transitions. [2024-11-27 23:38:58,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1378 transitions. [2024-11-27 23:38:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-27 23:38:58,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:58,942 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 34, 23, 23, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:58,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:38:59,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 23:38:59,143 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1013595907, now seen corresponding path program 3 times [2024-11-27 23:38:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642007238] [2024-11-27 23:38:59,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:59,725 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 23:38:59,725 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 2211 proven. 778 refuted. 0 times theorem prover too weak. 3272 trivial. 0 not checked. [2024-11-27 23:39:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642007238] [2024-11-27 23:39:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642007238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033963219] [2024-11-27 23:39:01,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:01,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:01,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:39:01,445 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:39:01,445 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:01,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:39:01,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6256 trivial. 0 not checked. [2024-11-27 23:39:03,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6256 trivial. 0 not checked. [2024-11-27 23:39:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033963219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:06,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:06,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 6] total 28 [2024-11-27 23:39:06,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401733895] [2024-11-27 23:39:06,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:06,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:39:06,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:06,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:39:06,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:39:06,683 INFO L87 Difference]: Start difference. First operand 1176 states and 1378 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:18,292 INFO L93 Difference]: Finished difference Result 4501 states and 5695 transitions. [2024-11-27 23:39:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-11-27 23:39:18,293 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2024-11-27 23:39:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:18,310 INFO L225 Difference]: With dead ends: 4501 [2024-11-27 23:39:18,310 INFO L226 Difference]: Without dead ends: 4480 [2024-11-27 23:39:18,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19689 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=9520, Invalid=33952, Unknown=0, NotChecked=0, Total=43472 [2024-11-27 23:39:18,322 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1037 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:18,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 186 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:39:18,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2024-11-27 23:39:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 1250. [2024-11-27 23:39:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.176140912730184) internal successors, (1469), 1249 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1469 transitions. [2024-11-27 23:39:18,506 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1469 transitions. Word has length 294 [2024-11-27 23:39:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:18,507 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1469 transitions. [2024-11-27 23:39:18,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1469 transitions. [2024-11-27 23:39:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-27 23:39:18,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:18,515 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 35, 11, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:18,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:39:18,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:39:18,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:18,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1223061627, now seen corresponding path program 1 times [2024-11-27 23:39:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885842720] [2024-11-27 23:39:18,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 1679 proven. 9 refuted. 0 times theorem prover too weak. 4653 trivial. 0 not checked. [2024-11-27 23:39:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885842720] [2024-11-27 23:39:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885842720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756214269] [2024-11-27 23:39:20,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:20,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:20,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:20,157 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:20,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:39:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:20,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 23:39:20,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-27 23:39:23,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-27 23:39:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756214269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:26,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 105 [2024-11-27 23:39:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306633681] [2024-11-27 23:39:26,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:26,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-27 23:39:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:26,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-27 23:39:26,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4680, Invalid=6240, Unknown=0, NotChecked=0, Total=10920 [2024-11-27 23:39:26,982 INFO L87 Difference]: Start difference. First operand 1250 states and 1469 transitions. Second operand has 105 states, 105 states have (on average 5.771428571428571) internal successors, (606), 105 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:59,585 INFO L93 Difference]: Finished difference Result 11536 states and 14512 transitions. [2024-11-27 23:39:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-27 23:39:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 5.771428571428571) internal successors, (606), 105 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-27 23:39:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:59,617 INFO L225 Difference]: With dead ends: 11536 [2024-11-27 23:39:59,617 INFO L226 Difference]: Without dead ends: 10313 [2024-11-27 23:39:59,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59286 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=47127, Invalid=103029, Unknown=0, NotChecked=0, Total=150156 [2024-11-27 23:39:59,642 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6686 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6686 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:59,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6686 Valid, 594 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:39:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2024-11-27 23:40:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 758. [2024-11-27 23:40:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.1532364597093792) internal successors, (873), 757 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 873 transitions. [2024-11-27 23:40:00,099 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 873 transitions. Word has length 318 [2024-11-27 23:40:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:00,099 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 873 transitions. [2024-11-27 23:40:00,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 5.771428571428571) internal successors, (606), 105 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 873 transitions. [2024-11-27 23:40:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-27 23:40:00,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:00,123 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 47, 47, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:00,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:40:00,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:40:00,327 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:00,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash 292169569, now seen corresponding path program 4 times [2024-11-27 23:40:00,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:00,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304017788] [2024-11-27 23:40:00,329 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:40:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:01,037 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:40:01,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 26405 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-27 23:40:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:23,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304017788] [2024-11-27 23:40:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304017788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:23,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239855381] [2024-11-27 23:40:23,300 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:40:23,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:23,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:23,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38814d20-d77c-48bd-8096-bade3478a09b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process