./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:49:45,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:49:45,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:49:45,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:49:45,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:49:45,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:49:45,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:49:45,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:49:45,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:49:45,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:49:45,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:49:45,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:49:45,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:49:45,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:49:45,280 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:49:45,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:49:45,281 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:49:45,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:45,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:49:45,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:45,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:49:45,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:49:45,283 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 [2024-12-02 13:49:45,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:49:45,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:49:45,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:49:45,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:49:45,528 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:49:45,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 13:49:48,125 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/0bf1b1fd0/6b21d2cf047540d9a1dce1ff1d112adc/FLAGf43b93937 [2024-12-02 13:49:48,353 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:49:48,354 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 13:49:48,362 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/0bf1b1fd0/6b21d2cf047540d9a1dce1ff1d112adc/FLAGf43b93937 [2024-12-02 13:49:48,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/0bf1b1fd0/6b21d2cf047540d9a1dce1ff1d112adc [2024-12-02 13:49:48,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:49:48,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:49:48,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:49:48,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:49:48,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:49:48,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:48,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf02aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48, skipping insertion in model container [2024-12-02 13:49:48,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:48,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:49:48,833 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-12-02 13:49:48,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:49:48,919 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:49:48,929 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-12-02 13:49:48,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:49:48,980 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:49:48,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48 WrapperNode [2024-12-02 13:49:48,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:49:48,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:49:48,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:49:48,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:49:48,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:48,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,038 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 389 [2024-12-02 13:49:49,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:49:49,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:49:49,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:49:49,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:49:49,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,072 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 13:49:49,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,084 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:49:49,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:49:49,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:49:49,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:49:49,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (1/1) ... [2024-12-02 13:49:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:49,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:49:49,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:49:49,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:49:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:49:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:49:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:49:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:49:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:49:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:49:49,241 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:49:49,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:49:49,789 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-12-02 13:49:49,789 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:49:49,801 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:49:49,801 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:49:49,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:49 BoogieIcfgContainer [2024-12-02 13:49:49,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:49:49,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:49:49,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:49:49,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:49:49,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:49:48" (1/3) ... [2024-12-02 13:49:49,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aba381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:49, skipping insertion in model container [2024-12-02 13:49:49,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:48" (2/3) ... [2024-12-02 13:49:49,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aba381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:49, skipping insertion in model container [2024-12-02 13:49:49,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:49" (3/3) ... [2024-12-02 13:49:49,810 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 13:49:49,824 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:49:49,826 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-68.i that has 2 procedures, 163 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:49:49,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:49:49,888 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;@732faeb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:49:49,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:49:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 13:49:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 13:49:49,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:49:49,908 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:49:49,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:49:49,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:49:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1492570003, now seen corresponding path program 1 times [2024-12-02 13:49:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:49:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516157953] [2024-12-02 13:49:49,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:49:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-12-02 13:49:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:49:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516157953] [2024-12-02 13:49:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516157953] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:49:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328974757] [2024-12-02 13:49:50,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:50,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:49:50,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:49:50,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:49:50,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:49:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:50,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:49:50,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:49:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-12-02 13:49:50,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:49:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328974757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:49:50,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:49:50,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:49:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646801109] [2024-12-02 13:49:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:49:50,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:49:50,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:49:50,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:49:50,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:49:50,560 INFO L87 Difference]: Start difference. First operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 13:49:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:49:50,597 INFO L93 Difference]: Finished difference Result 319 states and 544 transitions. [2024-12-02 13:49:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:49:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-12-02 13:49:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:49:50,606 INFO L225 Difference]: With dead ends: 319 [2024-12-02 13:49:50,606 INFO L226 Difference]: Without dead ends: 159 [2024-12-02 13:49:50,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:49:50,612 INFO L435 NwaCegarLoop]: 248 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, 248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:49:50,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:49:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-02 13:49:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-12-02 13:49:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.435897435897436) internal successors, (168), 117 states have internal predecessors, (168), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 13:49:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 248 transitions. [2024-12-02 13:49:50,662 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 248 transitions. Word has length 269 [2024-12-02 13:49:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:49:50,662 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 248 transitions. [2024-12-02 13:49:50,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 13:49:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 248 transitions. [2024-12-02 13:49:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 13:49:50,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:49:50,668 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:49:50,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:49:50,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 13:49:50,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:49:50,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:49:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1558472791, now seen corresponding path program 1 times [2024-12-02 13:49:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:49:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523681078] [2024-12-02 13:49:50,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:49:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:49:51,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:49:51,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523681078] [2024-12-02 13:49:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523681078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:49:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:49:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:49:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863246765] [2024-12-02 13:49:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:49:51,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:49:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:49:51,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:49:51,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:49:51,236 INFO L87 Difference]: Start difference. First operand 159 states and 248 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:49:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:49:51,268 INFO L93 Difference]: Finished difference Result 315 states and 493 transitions. [2024-12-02 13:49:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:49:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 269 [2024-12-02 13:49:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:49:51,271 INFO L225 Difference]: With dead ends: 315 [2024-12-02 13:49:51,271 INFO L226 Difference]: Without dead ends: 159 [2024-12-02 13:49:51,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:49:51,273 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:49:51,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:49:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-02 13:49:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-12-02 13:49:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.4273504273504274) internal successors, (167), 117 states have internal predecessors, (167), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 13:49:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 247 transitions. [2024-12-02 13:49:51,287 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 247 transitions. Word has length 269 [2024-12-02 13:49:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:49:51,289 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 247 transitions. [2024-12-02 13:49:51,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:49:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 247 transitions. [2024-12-02 13:49:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 13:49:51,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:49:51,294 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:49:51,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:49:51,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:49:51,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:49:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1952839577, now seen corresponding path program 1 times [2024-12-02 13:49:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:49:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821327765] [2024-12-02 13:49:51,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:49:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:49:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:49:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821327765] [2024-12-02 13:49:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821327765] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:49:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:49:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:49:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103444676] [2024-12-02 13:49:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:49:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:49:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:49:53,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:49:53,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:49:53,543 INFO L87 Difference]: Start difference. First operand 159 states and 247 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 13:49:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:49:54,723 INFO L93 Difference]: Finished difference Result 477 states and 733 transitions. [2024-12-02 13:49:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:49:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-12-02 13:49:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:49:54,727 INFO L225 Difference]: With dead ends: 477 [2024-12-02 13:49:54,727 INFO L226 Difference]: Without dead ends: 321 [2024-12-02 13:49:54,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:49:54,729 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 542 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:49:54,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 589 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:49:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-12-02 13:49:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 296. [2024-12-02 13:49:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 250 states have (on average 1.476) internal successors, (369), 251 states have internal predecessors, (369), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 13:49:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 455 transitions. [2024-12-02 13:49:54,759 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 455 transitions. Word has length 269 [2024-12-02 13:49:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:49:54,760 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 455 transitions. [2024-12-02 13:49:54,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 13:49:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 455 transitions. [2024-12-02 13:49:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 13:49:54,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:49:54,765 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:49:54,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:49:54,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:49:54,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:49:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash 753779817, now seen corresponding path program 1 times [2024-12-02 13:49:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:49:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070337901] [2024-12-02 13:49:54,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:49:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:49:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:49:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070337901] [2024-12-02 13:49:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070337901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:49:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786237339] [2024-12-02 13:49:55,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:55,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:49:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:49:55,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:49:55,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:49:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:55,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 13:49:55,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:49:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1543 proven. 147 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-12-02 13:49:56,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:49:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 81 proven. 150 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-12-02 13:49:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786237339] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:49:56,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:49:56,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-12-02 13:49:56,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276130104] [2024-12-02 13:49:56,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:49:56,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:49:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:49:56,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:49:56,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:49:56,813 INFO L87 Difference]: Start difference. First operand 296 states and 455 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-12-02 13:49:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:49:57,454 INFO L93 Difference]: Finished difference Result 553 states and 843 transitions. [2024-12-02 13:49:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:49:57,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) Word has length 269 [2024-12-02 13:49:57,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:49:57,459 INFO L225 Difference]: With dead ends: 553 [2024-12-02 13:49:57,459 INFO L226 Difference]: Without dead ends: 260 [2024-12-02 13:49:57,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:49:57,461 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 535 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:49:57,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 489 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:49:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-12-02 13:49:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2024-12-02 13:49:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 209 states have (on average 1.3588516746411483) internal successors, (284), 210 states have internal predecessors, (284), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 13:49:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 370 transitions. [2024-12-02 13:49:57,486 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 370 transitions. Word has length 269 [2024-12-02 13:49:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:49:57,487 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 370 transitions. [2024-12-02 13:49:57,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-12-02 13:49:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 370 transitions. [2024-12-02 13:49:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 13:49:57,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:49:57,489 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:49:57,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:49:57,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:49:57,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:49:57,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:49:57,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1064010365, now seen corresponding path program 1 times [2024-12-02 13:49:57,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:49:57,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959325737] [2024-12-02 13:49:57,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:49:57,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:49:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:49:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:49:59,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:49:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959325737] [2024-12-02 13:49:59,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959325737] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:49:59,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:49:59,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:49:59,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942267413] [2024-12-02 13:49:59,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:49:59,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:49:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:49:59,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:49:59,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:49:59,236 INFO L87 Difference]: Start difference. First operand 258 states and 370 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:00,394 INFO L93 Difference]: Finished difference Result 588 states and 838 transitions. [2024-12-02 13:50:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-12-02 13:50:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:00,398 INFO L225 Difference]: With dead ends: 588 [2024-12-02 13:50:00,398 INFO L226 Difference]: Without dead ends: 333 [2024-12-02 13:50:00,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:50:00,399 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 567 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:00,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 555 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:50:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-12-02 13:50:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2024-12-02 13:50:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 222 states have (on average 1.3738738738738738) internal successors, (305), 223 states have internal predecessors, (305), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 13:50:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 391 transitions. [2024-12-02 13:50:00,426 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 391 transitions. Word has length 271 [2024-12-02 13:50:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:00,427 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 391 transitions. [2024-12-02 13:50:00,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 391 transitions. [2024-12-02 13:50:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 13:50:00,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:00,430 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:00,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:50:00,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:00,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1642609029, now seen corresponding path program 1 times [2024-12-02 13:50:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014221983] [2024-12-02 13:50:00,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:50:03,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:03,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014221983] [2024-12-02 13:50:03,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014221983] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:03,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:03,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:50:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836277373] [2024-12-02 13:50:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:03,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:50:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:03,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:50:03,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:50:03,047 INFO L87 Difference]: Start difference. First operand 271 states and 391 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:04,996 INFO L93 Difference]: Finished difference Result 675 states and 959 transitions. [2024-12-02 13:50:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:50:04,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-12-02 13:50:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:04,999 INFO L225 Difference]: With dead ends: 675 [2024-12-02 13:50:04,999 INFO L226 Difference]: Without dead ends: 407 [2024-12-02 13:50:05,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:50:05,001 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 770 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:05,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 709 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 13:50:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-12-02 13:50:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 285. [2024-12-02 13:50:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 236 states have (on average 1.3771186440677967) internal successors, (325), 237 states have internal predecessors, (325), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 13:50:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 411 transitions. [2024-12-02 13:50:05,021 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 411 transitions. Word has length 271 [2024-12-02 13:50:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:05,021 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 411 transitions. [2024-12-02 13:50:05,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 411 transitions. [2024-12-02 13:50:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 13:50:05,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:05,024 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:05,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:50:05,024 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:05,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash 362745351, now seen corresponding path program 1 times [2024-12-02 13:50:05,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:05,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354491900] [2024-12-02 13:50:05,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:50:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354491900] [2024-12-02 13:50:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354491900] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530368579] [2024-12-02 13:50:05,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:05,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:05,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:50:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:05,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 13:50:05,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1456 proven. 57 refuted. 0 times theorem prover too weak. 1607 trivial. 0 not checked. [2024-12-02 13:50:07,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:50:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 228 proven. 3 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-12-02 13:50:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530368579] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:50:08,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:50:08,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 12] total 32 [2024-12-02 13:50:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330769180] [2024-12-02 13:50:08,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:50:08,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 13:50:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:08,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 13:50:08,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:50:08,354 INFO L87 Difference]: Start difference. First operand 285 states and 411 transitions. Second operand has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-12-02 13:50:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:15,276 INFO L93 Difference]: Finished difference Result 1168 states and 1647 transitions. [2024-12-02 13:50:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 13:50:15,276 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) Word has length 271 [2024-12-02 13:50:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:15,281 INFO L225 Difference]: With dead ends: 1168 [2024-12-02 13:50:15,281 INFO L226 Difference]: Without dead ends: 886 [2024-12-02 13:50:15,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2066, Invalid=6490, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 13:50:15,285 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 1372 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:15,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2334 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 13:50:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-12-02 13:50:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 321. [2024-12-02 13:50:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 266 states have (on average 1.3383458646616542) internal successors, (356), 267 states have internal predecessors, (356), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 13:50:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2024-12-02 13:50:15,367 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 271 [2024-12-02 13:50:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:15,368 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2024-12-02 13:50:15,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-12-02 13:50:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2024-12-02 13:50:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 13:50:15,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:15,370 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:15,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:50:15,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 13:50:15,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:15,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1437161110, now seen corresponding path program 1 times [2024-12-02 13:50:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:15,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692199312] [2024-12-02 13:50:15,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:50:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692199312] [2024-12-02 13:50:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692199312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:16,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:16,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:50:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278700751] [2024-12-02 13:50:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:16,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:50:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:16,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:50:16,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:16,158 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:17,104 INFO L93 Difference]: Finished difference Result 1293 states and 1803 transitions. [2024-12-02 13:50:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:50:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-12-02 13:50:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:17,108 INFO L225 Difference]: With dead ends: 1293 [2024-12-02 13:50:17,108 INFO L226 Difference]: Without dead ends: 975 [2024-12-02 13:50:17,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:50:17,109 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 401 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:17,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1773 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:50:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-12-02 13:50:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 536. [2024-12-02 13:50:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 464 states have (on average 1.3620689655172413) internal successors, (632), 467 states have internal predecessors, (632), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 54 states have call predecessors, (57), 57 states have call successors, (57) [2024-12-02 13:50:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 746 transitions. [2024-12-02 13:50:17,210 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 746 transitions. Word has length 272 [2024-12-02 13:50:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:17,211 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 746 transitions. [2024-12-02 13:50:17,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 746 transitions. [2024-12-02 13:50:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-02 13:50:17,213 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:17,213 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:17,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:50:17,214 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 850752483, now seen corresponding path program 1 times [2024-12-02 13:50:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:17,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468521840] [2024-12-02 13:50:17,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:50:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468521840] [2024-12-02 13:50:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468521840] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068360603] [2024-12-02 13:50:17,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:17,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:17,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:17,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:17,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:50:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:17,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 13:50:17,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1403 proven. 282 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2024-12-02 13:50:19,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:50:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:50:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068360603] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:50:20,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:50:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 9] total 22 [2024-12-02 13:50:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944549432] [2024-12-02 13:50:20,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:50:20,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 13:50:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:20,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 13:50:20,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:50:20,502 INFO L87 Difference]: Start difference. First operand 536 states and 746 transitions. Second operand has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-12-02 13:50:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:22,799 INFO L93 Difference]: Finished difference Result 1456 states and 1984 transitions. [2024-12-02 13:50:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 13:50:22,800 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) Word has length 273 [2024-12-02 13:50:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:22,805 INFO L225 Difference]: With dead ends: 1456 [2024-12-02 13:50:22,805 INFO L226 Difference]: Without dead ends: 917 [2024-12-02 13:50:22,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 526 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=838, Invalid=2468, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 13:50:22,807 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 1919 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:22,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 1144 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:50:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-12-02 13:50:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 735. [2024-12-02 13:50:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 612 states have (on average 1.3169934640522876) internal successors, (806), 617 states have internal predecessors, (806), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 13:50:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 998 transitions. [2024-12-02 13:50:22,934 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 998 transitions. Word has length 273 [2024-12-02 13:50:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:22,935 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 998 transitions. [2024-12-02 13:50:22,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-12-02 13:50:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 998 transitions. [2024-12-02 13:50:22,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-02 13:50:22,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:22,936 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:22,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:50:23,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 13:50:23,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:23,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1845599263, now seen corresponding path program 1 times [2024-12-02 13:50:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:23,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108655195] [2024-12-02 13:50:23,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:50:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108655195] [2024-12-02 13:50:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108655195] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702726016] [2024-12-02 13:50:23,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:23,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:23,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:23,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:50:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:23,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 13:50:23,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1985 proven. 87 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2024-12-02 13:50:24,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:50:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-12-02 13:50:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702726016] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:50:24,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:50:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 24 [2024-12-02 13:50:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372007399] [2024-12-02 13:50:24,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:50:24,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 13:50:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:24,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 13:50:24,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:50:24,676 INFO L87 Difference]: Start difference. First operand 735 states and 998 transitions. Second operand has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-12-02 13:50:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:28,586 INFO L93 Difference]: Finished difference Result 3695 states and 4866 transitions. [2024-12-02 13:50:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 13:50:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) Word has length 273 [2024-12-02 13:50:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:28,600 INFO L225 Difference]: With dead ends: 3695 [2024-12-02 13:50:28,600 INFO L226 Difference]: Without dead ends: 2963 [2024-12-02 13:50:28,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2453, Invalid=9103, Unknown=0, NotChecked=0, Total=11556 [2024-12-02 13:50:28,608 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 3279 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:28,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 1439 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 13:50:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-12-02 13:50:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1365. [2024-12-02 13:50:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1138 states have (on average 1.2706502636203867) internal successors, (1446), 1148 states have internal predecessors, (1446), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-12-02 13:50:29,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1770 transitions. [2024-12-02 13:50:29,055 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1770 transitions. Word has length 273 [2024-12-02 13:50:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:29,056 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1770 transitions. [2024-12-02 13:50:29,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-12-02 13:50:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1770 transitions. [2024-12-02 13:50:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 13:50:29,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:29,058 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:29,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:50:29,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 13:50:29,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:29,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1885778492, now seen corresponding path program 1 times [2024-12-02 13:50:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920708570] [2024-12-02 13:50:29,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:50:29,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:29,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920708570] [2024-12-02 13:50:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920708570] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:50:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517280797] [2024-12-02 13:50:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:29,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:50:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:29,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:50:29,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:50:29,563 INFO L87 Difference]: Start difference. First operand 1365 states and 1770 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:30,134 INFO L93 Difference]: Finished difference Result 2887 states and 3765 transitions. [2024-12-02 13:50:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:50:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 276 [2024-12-02 13:50:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:30,140 INFO L225 Difference]: With dead ends: 2887 [2024-12-02 13:50:30,140 INFO L226 Difference]: Without dead ends: 1525 [2024-12-02 13:50:30,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:50:30,143 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 225 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:30,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 541 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:50:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-12-02 13:50:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1381. [2024-12-02 13:50:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1154 states have (on average 1.266897746967071) internal successors, (1462), 1164 states have internal predecessors, (1462), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-12-02 13:50:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1786 transitions. [2024-12-02 13:50:30,554 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1786 transitions. Word has length 276 [2024-12-02 13:50:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:30,554 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1786 transitions. [2024-12-02 13:50:30,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:50:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1786 transitions. [2024-12-02 13:50:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 13:50:30,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:30,556 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:30,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:50:30,556 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:30,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash 603750470, now seen corresponding path program 1 times [2024-12-02 13:50:30,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:30,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758055866] [2024-12-02 13:50:30,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 423 proven. 270 refuted. 0 times theorem prover too weak. 2427 trivial. 0 not checked. [2024-12-02 13:50:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758055866] [2024-12-02 13:50:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758055866] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53807374] [2024-12-02 13:50:50,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:50,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:50,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:50,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:50:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:50,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 13:50:50,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2045 proven. 150 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2024-12-02 13:50:51,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:50:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 207 proven. 135 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-12-02 13:50:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53807374] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:50:52,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:50:52,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 42 [2024-12-02 13:50:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085291572] [2024-12-02 13:50:52,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:50:52,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 13:50:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:52,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 13:50:52,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 13:50:52,796 INFO L87 Difference]: Start difference. First operand 1381 states and 1786 transitions. Second operand has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-12-02 13:51:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:51:03,181 INFO L93 Difference]: Finished difference Result 3993 states and 5127 transitions. [2024-12-02 13:51:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 13:51:03,182 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) Word has length 276 [2024-12-02 13:51:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:51:03,191 INFO L225 Difference]: With dead ends: 3993 [2024-12-02 13:51:03,191 INFO L226 Difference]: Without dead ends: 2615 [2024-12-02 13:51:03,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3011 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2512, Invalid=8830, Unknown=0, NotChecked=0, Total=11342 [2024-12-02 13:51:03,196 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 3824 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3824 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:51:03,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3824 Valid, 1325 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 13:51:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-12-02 13:51:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 621. [2024-12-02 13:51:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 500 states have (on average 1.248) internal successors, (624), 500 states have internal predecessors, (624), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 13:51:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 784 transitions. [2024-12-02 13:51:03,427 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 784 transitions. Word has length 276 [2024-12-02 13:51:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:51:03,427 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 784 transitions. [2024-12-02 13:51:03,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-12-02 13:51:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 784 transitions. [2024-12-02 13:51:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 13:51:03,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:51:03,429 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:51:03,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:51:03,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 13:51:03,629 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:51:03,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:51:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash -768845091, now seen corresponding path program 1 times [2024-12-02 13:51:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:51:03,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613822034] [2024-12-02 13:51:03,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:51:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:51:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:51:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:51:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:51:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613822034] [2024-12-02 13:51:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613822034] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:51:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86189777] [2024-12-02 13:51:10,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:51:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:51:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:51:10,831 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:51:10,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:51:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:51:11,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 13:51:11,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:51:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2083 proven. 279 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2024-12-02 13:51:16,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:52:41,862 WARN L286 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:53:28,821 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:53:45,540 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:54:13,519 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:54:32,000 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 16 DAG size of output: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:54:37,922 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 16 DAG size of output: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:55:19,119 WARN L286 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 13:55:26,415 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:57:09,799 WARN L286 SmtUtils]: Spent 14.48s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:57:37,799 WARN L286 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:59:13,106 WARN L286 SmtUtils]: Spent 27.71s on a formula simplification. DAG size of input: 179 DAG size of output: 175 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:59:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86189777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:13,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:59:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 30 [2024-12-02 13:59:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056558489] [2024-12-02 13:59:13,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:59:13,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 13:59:13,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:13,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 13:59:13,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1225, Unknown=4, NotChecked=0, Total=1560 [2024-12-02 13:59:13,112 INFO L87 Difference]: Start difference. First operand 621 states and 784 transitions. Second operand has 30 states, 30 states have (on average 5.333333333333333) internal successors, (160), 29 states have internal predecessors, (160), 6 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-12-02 13:59:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:26,947 INFO L93 Difference]: Finished difference Result 3157 states and 4131 transitions. [2024-12-02 13:59:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 13:59:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.333333333333333) internal successors, (160), 29 states have internal predecessors, (160), 6 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) Word has length 276 [2024-12-02 13:59:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:26,952 INFO L225 Difference]: With dead ends: 3157 [2024-12-02 13:59:26,952 INFO L226 Difference]: Without dead ends: 2539 [2024-12-02 13:59:26,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=1348, Invalid=4348, Unknown=4, NotChecked=0, Total=5700 [2024-12-02 13:59:26,954 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 2900 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:26,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2906 Valid, 1870 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-12-02 13:59:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2024-12-02 13:59:27,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 815. [2024-12-02 13:59:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 694 states have (on average 1.2881844380403458) internal successors, (894), 694 states have internal predecessors, (894), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 13:59:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1054 transitions. [2024-12-02 13:59:27,180 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1054 transitions. Word has length 276 [2024-12-02 13:59:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:27,180 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1054 transitions. [2024-12-02 13:59:27,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.333333333333333) internal successors, (160), 29 states have internal predecessors, (160), 6 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-12-02 13:59:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1054 transitions. [2024-12-02 13:59:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 13:59:27,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:27,183 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:27,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:59:27,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:27,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:27,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash -345198369, now seen corresponding path program 1 times [2024-12-02 13:59:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550167088] [2024-12-02 13:59:27,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:59:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550167088] [2024-12-02 13:59:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550167088] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:27,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:59:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024083080] [2024-12-02 13:59:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:27,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:59:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:27,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:59:27,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:59:27,905 INFO L87 Difference]: Start difference. First operand 815 states and 1054 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:28,392 INFO L93 Difference]: Finished difference Result 1921 states and 2504 transitions. [2024-12-02 13:59:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:59:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 276 [2024-12-02 13:59:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:28,396 INFO L225 Difference]: With dead ends: 1921 [2024-12-02 13:59:28,396 INFO L226 Difference]: Without dead ends: 1109 [2024-12-02 13:59:28,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:59:28,397 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 175 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:28,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 707 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:59:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-12-02 13:59:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 849. [2024-12-02 13:59:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 728 states have (on average 1.293956043956044) internal successors, (942), 728 states have internal predecessors, (942), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 13:59:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1102 transitions. [2024-12-02 13:59:28,621 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1102 transitions. Word has length 276 [2024-12-02 13:59:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:28,622 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1102 transitions. [2024-12-02 13:59:28,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1102 transitions. [2024-12-02 13:59:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 13:59:28,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:28,624 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:28,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:59:28,624 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:28,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1121933473, now seen corresponding path program 1 times [2024-12-02 13:59:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:28,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936379272] [2024-12-02 13:59:28,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:28,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:59:30,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936379272] [2024-12-02 13:59:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936379272] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:30,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:30,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:59:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022718847] [2024-12-02 13:59:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:30,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:59:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:30,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:59:30,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:59:30,579 INFO L87 Difference]: Start difference. First operand 849 states and 1102 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:32,392 INFO L93 Difference]: Finished difference Result 2863 states and 3720 transitions. [2024-12-02 13:59:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:59:32,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 276 [2024-12-02 13:59:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:32,396 INFO L225 Difference]: With dead ends: 2863 [2024-12-02 13:59:32,396 INFO L226 Difference]: Without dead ends: 2017 [2024-12-02 13:59:32,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:59:32,398 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 682 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:32,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 985 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:59:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-12-02 13:59:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1627. [2024-12-02 13:59:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1386 states have (on average 1.29004329004329) internal successors, (1788), 1386 states have internal predecessors, (1788), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2024-12-02 13:59:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2108 transitions. [2024-12-02 13:59:32,809 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2108 transitions. Word has length 276 [2024-12-02 13:59:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:32,809 INFO L471 AbstractCegarLoop]: Abstraction has 1627 states and 2108 transitions. [2024-12-02 13:59:32,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2108 transitions. [2024-12-02 13:59:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 13:59:32,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:32,812 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:32,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:59:32,812 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:32,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 870198091, now seen corresponding path program 1 times [2024-12-02 13:59:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535491022] [2024-12-02 13:59:32,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 13:59:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:33,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535491022] [2024-12-02 13:59:33,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535491022] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:33,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721370938] [2024-12-02 13:59:33,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:33,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:33,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:33,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:33,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:59:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:33,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:59:33,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:59:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2062 proven. 186 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-12-02 13:59:34,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:59:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 129 proven. 102 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-12-02 13:59:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721370938] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:59:35,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:59:35,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 11] total 28 [2024-12-02 13:59:35,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642863431] [2024-12-02 13:59:35,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:59:35,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 13:59:35,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:35,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 13:59:35,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:59:35,435 INFO L87 Difference]: Start difference. First operand 1627 states and 2108 transitions. Second operand has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (92), 5 states have call predecessors, (92), 9 states have return successors, (93), 9 states have call predecessors, (93), 9 states have call successors, (93) [2024-12-02 13:59:37,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:37,393 INFO L93 Difference]: Finished difference Result 3626 states and 4648 transitions. [2024-12-02 13:59:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:59:37,394 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (92), 5 states have call predecessors, (92), 9 states have return successors, (93), 9 states have call predecessors, (93), 9 states have call successors, (93) Word has length 277 [2024-12-02 13:59:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:37,398 INFO L225 Difference]: With dead ends: 3626 [2024-12-02 13:59:37,398 INFO L226 Difference]: Without dead ends: 2002 [2024-12-02 13:59:37,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=931, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 13:59:37,400 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 803 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:37,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1056 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:59:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2024-12-02 13:59:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1625. [2024-12-02 13:59:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1376 states have (on average 1.2834302325581395) internal successors, (1766), 1376 states have internal predecessors, (1766), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2024-12-02 13:59:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2086 transitions. [2024-12-02 13:59:37,800 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2086 transitions. Word has length 277 [2024-12-02 13:59:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:37,801 INFO L471 AbstractCegarLoop]: Abstraction has 1625 states and 2086 transitions. [2024-12-02 13:59:37,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (92), 5 states have call predecessors, (92), 9 states have return successors, (93), 9 states have call predecessors, (93), 9 states have call successors, (93) [2024-12-02 13:59:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2086 transitions. [2024-12-02 13:59:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 13:59:37,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:37,803 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:37,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:59:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 13:59:38,003 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:38,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 89496223, now seen corresponding path program 1 times [2024-12-02 13:59:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177793463] [2024-12-02 13:59:38,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 13:59:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177793463] [2024-12-02 13:59:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177793463] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:38,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:59:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752910373] [2024-12-02 13:59:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:38,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:59:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:38,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:59:38,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:59:38,279 INFO L87 Difference]: Start difference. First operand 1625 states and 2086 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:39,176 INFO L93 Difference]: Finished difference Result 3668 states and 4701 transitions. [2024-12-02 13:59:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:59:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 277 [2024-12-02 13:59:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:39,184 INFO L225 Difference]: With dead ends: 3668 [2024-12-02 13:59:39,185 INFO L226 Difference]: Without dead ends: 2046 [2024-12-02 13:59:39,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:59:39,187 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 270 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:39,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1179 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:59:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2024-12-02 13:59:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1629. [2024-12-02 13:59:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1380 states have (on average 1.2797101449275363) internal successors, (1766), 1380 states have internal predecessors, (1766), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2024-12-02 13:59:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2086 transitions. [2024-12-02 13:59:39,601 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2086 transitions. Word has length 277 [2024-12-02 13:59:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:39,601 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 2086 transitions. [2024-12-02 13:59:39,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 13:59:39,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2086 transitions. [2024-12-02 13:59:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-12-02 13:59:39,603 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:39,603 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:39,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:59:39,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:39,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1662630310, now seen corresponding path program 1 times [2024-12-02 13:59:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394095175] [2024-12-02 13:59:39,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 13:59:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484525772] [2024-12-02 13:59:39,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:39,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:39,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:39,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:39,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:59:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:39,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:59:39,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:59:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2173 proven. 126 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2024-12-02 13:59:42,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:59:48,238 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~var_1_19~0 65536))) (let ((.cse3 (+ 2 .cse2)) (.cse1 (mod c_~var_1_29~0 256))) (and (or (forall ((v_z_663 Int)) (let ((.cse0 (+ .cse1 (* (- 1) v_z_663)))) (or (= (mod c_~last_1_var_1_40~0 .cse0) 0) (< .cse1 v_z_663) (< 126 v_z_663) (< (div c_~last_1_var_1_40~0 .cse0) (+ .cse2 1))))) (< 0 (+ c_~last_1_var_1_40~0 1))) (forall ((v_z_663 Int)) (or (< .cse1 v_z_663) (< 126 v_z_663) (< v_z_663 0) (< (div c_~last_1_var_1_40~0 (+ .cse1 (* (- 1) v_z_663))) .cse3))) (forall ((v_z_663 Int)) (let ((.cse4 (+ .cse1 (* (- 1) v_z_663)))) (or (not (= (mod c_~last_1_var_1_40~0 .cse4) 0)) (< 126 v_z_663) (< v_z_663 0) (< (div c_~last_1_var_1_40~0 .cse4) .cse3)))) (forall ((v_z_663 Int)) (or (< 126 v_z_663) (< (div c_~last_1_var_1_40~0 (+ .cse1 (* (- 1) v_z_663))) (+ 3 .cse2)) (< v_z_663 0)))))) is different from false [2024-12-02 13:59:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394095175] [2024-12-02 13:59:48,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 13:59:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484525772] [2024-12-02 13:59:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484525772] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:48,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:59:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-12-02 13:59:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887299107] [2024-12-02 13:59:48,248 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 13:59:48,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:59:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:48,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:59:48,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=184, Unknown=1, NotChecked=28, Total=272 [2024-12-02 13:59:48,250 INFO L87 Difference]: Start difference. First operand 1629 states and 2086 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2024-12-02 13:59:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:50,615 INFO L93 Difference]: Finished difference Result 3997 states and 5129 transitions. [2024-12-02 13:59:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 13:59:50,616 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 278 [2024-12-02 13:59:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:50,625 INFO L225 Difference]: With dead ends: 3997 [2024-12-02 13:59:50,625 INFO L226 Difference]: Without dead ends: 2371 [2024-12-02 13:59:50,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=263, Invalid=732, Unknown=1, NotChecked=60, Total=1056 [2024-12-02 13:59:50,628 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 584 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:50,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 951 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:59:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2024-12-02 13:59:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1796. [2024-12-02 13:59:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1485 states have (on average 1.261952861952862) internal successors, (1874), 1485 states have internal predecessors, (1874), 200 states have call successors, (200), 110 states have call predecessors, (200), 110 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2024-12-02 13:59:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2274 transitions. [2024-12-02 13:59:51,162 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2274 transitions. Word has length 278 [2024-12-02 13:59:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:51,163 INFO L471 AbstractCegarLoop]: Abstraction has 1796 states and 2274 transitions. [2024-12-02 13:59:51,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2024-12-02 13:59:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2274 transitions. [2024-12-02 13:59:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-12-02 13:59:51,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:51,164 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:51,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:59:51,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:51,365 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:51,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 265642392, now seen corresponding path program 1 times [2024-12-02 13:59:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705553373] [2024-12-02 13:59:51,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 13:59:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260350088] [2024-12-02 13:59:51,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:51,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:51,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:51,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:59:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:51,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 13:59:51,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:00:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2141 proven. 390 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-12-02 14:00:04,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:00:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:00:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705553373] [2024-12-02 14:00:12,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:00:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260350088] [2024-12-02 14:00:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260350088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:00:12,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:00:12,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-12-02 14:00:12,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257512786] [2024-12-02 14:00:12,759 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 14:00:12,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 14:00:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:00:12,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 14:00:12,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=865, Unknown=1, NotChecked=0, Total=1122 [2024-12-02 14:00:12,761 INFO L87 Difference]: Start difference. First operand 1796 states and 2274 transitions. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 10 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2024-12-02 14:00:20,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:24,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:32,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:41,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:45,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:49,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:53,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:00:57,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:01,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:05,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:10,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:14,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:22,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:26,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:30,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:34,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:38,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:42,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:46,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:50,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:54,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:55,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:01:59,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:02:06,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:02:10,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 14:02:13,163 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 14:02:13,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 14:02:13,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=1020, Invalid=3269, Unknown=1, NotChecked=0, Total=4290 [2024-12-02 14:02:13,165 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 52 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 110 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:02:13,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 547 Invalid, 24 Unknown, 0 Unchecked, 99.3s Time] [2024-12-02 14:02:13,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:02:13,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:02:13,366 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:388) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-12-02 14:02:13,370 INFO L158 Benchmark]: Toolchain (without parser) took 744681.13ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 118.8MB in the beginning and 631.9MB in the end (delta: -513.1MB). Peak memory consumption was 276.0MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.32ms. Allocated memory is still 142.6MB. Free memory was 118.6MB in the beginning and 101.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.06ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 94.8MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: Boogie Preprocessor took 63.44ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 86.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: RCFGBuilder took 698.81ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 92.0MB in the end (delta: -5.5MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,371 INFO L158 Benchmark]: TraceAbstraction took 743566.71ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 91.4MB in the beginning and 631.9MB in the end (delta: -540.5MB). Peak memory consumption was 252.6MB. Max. memory is 16.1GB. [2024-12-02 14:02:13,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.32ms. Allocated memory is still 142.6MB. Free memory was 118.6MB in the beginning and 101.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.06ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 94.8MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.44ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 86.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 698.81ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 92.0MB in the end (delta: -5.5MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * TraceAbstraction took 743566.71ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 91.4MB in the beginning and 631.9MB in the end (delta: -540.5MB). Peak memory consumption was 252.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:02:15,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:02:15,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 14:02:15,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:02:15,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:02:15,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:02:15,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:02:15,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:02:15,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:02:15,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:02:15,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:02:15,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:02:15,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:02:15,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:02:15,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:02:15,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:02:15,324 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:02:15,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:02:15,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:02:15,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:02:15,325 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:02:15,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:02:15,326 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 [2024-12-02 14:02:15,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:02:15,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:02:15,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:02:15,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:02:15,597 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:02:15,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 14:02:18,437 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/5f6368b00/983faae02c804f97bbcfa960a2f34fa7/FLAGa9c62e99b [2024-12-02 14:02:18,633 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:02:18,634 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 14:02:18,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/5f6368b00/983faae02c804f97bbcfa960a2f34fa7/FLAGa9c62e99b [2024-12-02 14:02:18,655 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/data/5f6368b00/983faae02c804f97bbcfa960a2f34fa7 [2024-12-02 14:02:18,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:02:18,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:02:18,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:02:18,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:02:18,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:02:18,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:18,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e025a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18, skipping insertion in model container [2024-12-02 14:02:18,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:18,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:02:18,808 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-12-02 14:02:18,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:02:18,886 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:02:18,894 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_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-12-02 14:02:18,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:02:18,949 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:02:18,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18 WrapperNode [2024-12-02 14:02:18,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:02:18,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:02:18,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:02:18,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:02:18,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:18,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:18,990 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 235 [2024-12-02 14:02:18,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:02:18,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:02:18,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:02:18,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:02:18,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:18,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,013 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 14:02:19,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,023 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:02:19,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:02:19,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:02:19,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:02:19,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (1/1) ... [2024-12-02 14:02:19,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:02:19,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:02:19,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:02:19,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:02:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:02:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 14:02:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:02:19,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:02:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:02:19,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:02:19,179 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:02:19,180 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:02:22,204 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 14:02:22,204 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:02:22,214 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:02:22,215 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:02:22,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:02:22 BoogieIcfgContainer [2024-12-02 14:02:22,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:02:22,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:02:22,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:02:22,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:02:22,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:02:18" (1/3) ... [2024-12-02 14:02:22,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5c8590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:02:22, skipping insertion in model container [2024-12-02 14:02:22,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:02:18" (2/3) ... [2024-12-02 14:02:22,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5c8590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:02:22, skipping insertion in model container [2024-12-02 14:02:22,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:02:22" (3/3) ... [2024-12-02 14:02:22,223 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-68.i [2024-12-02 14:02:22,235 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:02:22,237 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-68.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:02:22,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:02:22,295 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;@538786c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:02:22,295 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:02:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 63 states have internal predecessors, (84), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:02:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 14:02:22,311 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:02:22,312 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:02:22,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:02:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:02:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1379908343, now seen corresponding path program 1 times [2024-12-02 14:02:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:02:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358721278] [2024-12-02 14:02:22,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:02:22,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:02:22,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 14:02:22,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 14:02:22,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-12-02 14:02:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:02:22,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:02:22,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:02:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2024-12-02 14:02:22,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:02:22,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:02:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358721278] [2024-12-02 14:02:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358721278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:02:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:02:22,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:02:22,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749599772] [2024-12-02 14:02:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:02:22,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:02:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:02:22,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:02:22,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:02:22,970 INFO L87 Difference]: Start difference. First operand has 105 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 63 states have internal predecessors, (84), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 14:02:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:02:23,001 INFO L93 Difference]: Finished difference Result 203 states and 362 transitions. [2024-12-02 14:02:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:02:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 251 [2024-12-02 14:02:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:02:23,007 INFO L225 Difference]: With dead ends: 203 [2024-12-02 14:02:23,008 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 14:02:23,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:02:23,012 INFO L435 NwaCegarLoop]: 157 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, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:02:23,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:02:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 14:02:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 14:02:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:02:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 157 transitions. [2024-12-02 14:02:23,060 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 157 transitions. Word has length 251 [2024-12-02 14:02:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:02:23,060 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 157 transitions. [2024-12-02 14:02:23,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 14:02:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 157 transitions. [2024-12-02 14:02:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 14:02:23,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:02:23,065 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:02:23,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-02 14:02:23,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:02:23,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:02:23,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:02:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash 107430725, now seen corresponding path program 1 times [2024-12-02 14:02:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:02:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549633118] [2024-12-02 14:02:23,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:02:23,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:02:23,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 14:02:23,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 14:02:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-12-02 14:02:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:02:23,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:02:23,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:02:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 14:02:23,842 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:02:23,842 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:02:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549633118] [2024-12-02 14:02:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549633118] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:02:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:02:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:02:23,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470983206] [2024-12-02 14:02:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:02:23,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:02:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:02:23,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:02:23,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:02:23,846 INFO L87 Difference]: Start difference. First operand 101 states and 157 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 14:02:25,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 14:02:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:02:25,460 INFO L93 Difference]: Finished difference Result 199 states and 311 transitions. [2024-12-02 14:02:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:02:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 251 [2024-12-02 14:02:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:02:25,484 INFO L225 Difference]: With dead ends: 199 [2024-12-02 14:02:25,484 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 14:02:25,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:02:25,486 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:02:25,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 14:02:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 14:02:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 14:02:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:02:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 156 transitions. [2024-12-02 14:02:25,504 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 156 transitions. Word has length 251 [2024-12-02 14:02:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:02:25,506 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 156 transitions. [2024-12-02 14:02:25,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 14:02:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 156 transitions. [2024-12-02 14:02:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 14:02:25,511 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:02:25,512 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:02:25,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-12-02 14:02:25,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:02:25,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:02:25,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:02:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1581513017, now seen corresponding path program 1 times [2024-12-02 14:02:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:02:25,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005194191] [2024-12-02 14:02:25,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:02:25,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:02:25,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 14:02:25,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 14:02:25,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-12-02 14:02:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:02:26,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 14:02:26,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:02:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2073 proven. 228 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-12-02 14:02:30,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:02:31,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:02:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005194191] [2024-12-02 14:02:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005194191] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:02:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767562277] [2024-12-02 14:02:31,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:02:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 14:02:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 14:02:31,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 14:02:31,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-12-02 14:02:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:02:34,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:02:34,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:02:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2146 proven. 195 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2024-12-02 14:02:41,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:02:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1767562277] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:02:44,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:02:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 33 [2024-12-02 14:02:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844451204] [2024-12-02 14:02:44,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:02:44,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 14:02:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:02:44,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 14:02:44,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 14:02:44,777 INFO L87 Difference]: Start difference. First operand 101 states and 156 transitions. Second operand has 33 states, 33 states have (on average 4.121212121212121) internal successors, (136), 30 states have internal predecessors, (136), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) [2024-12-02 14:02:58,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:03:04,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 14:03:10,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 14:03:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:03:10,052 INFO L93 Difference]: Finished difference Result 395 states and 560 transitions. [2024-12-02 14:03:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 14:03:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.121212121212121) internal successors, (136), 30 states have internal predecessors, (136), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) Word has length 251 [2024-12-02 14:03:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:03:10,082 INFO L225 Difference]: With dead ends: 395 [2024-12-02 14:03:10,082 INFO L226 Difference]: Without dead ends: 297 [2024-12-02 14:03:10,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1319, Invalid=5821, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 14:03:10,084 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 749 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:03:10,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 785 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2024-12-02 14:03:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-12-02 14:03:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 230. [2024-12-02 14:03:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 133 states have internal predecessors, (152), 80 states have call successors, (80), 16 states have call predecessors, (80), 16 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 14:03:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2024-12-02 14:03:10,141 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 312 transitions. Word has length 251 [2024-12-02 14:03:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:03:10,142 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 312 transitions. [2024-12-02 14:03:10,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.121212121212121) internal successors, (136), 30 states have internal predecessors, (136), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) [2024-12-02 14:03:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 312 transitions. [2024-12-02 14:03:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 14:03:10,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:10,145 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:10,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-12-02 14:03:10,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-12-02 14:03:10,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 14:03:10,546 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:10,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1856292427, now seen corresponding path program 1 times [2024-12-02 14:03:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:03:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527110398] [2024-12-02 14:03:10,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:10,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:03:10,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 14:03:10,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 14:03:10,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-12-02 14:03:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:10,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:03:10,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:03:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 14:03:14,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:03:14,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:03:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527110398] [2024-12-02 14:03:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527110398] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:03:14,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:03:14,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:03:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584196776] [2024-12-02 14:03:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:03:14,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:03:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:03:14,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:03:14,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:03:14,118 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 14:03:16,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 14:03:20,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 14:03:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:03:20,382 INFO L93 Difference]: Finished difference Result 458 states and 640 transitions. [2024-12-02 14:03:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:03:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 251 [2024-12-02 14:03:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:03:20,411 INFO L225 Difference]: With dead ends: 458 [2024-12-02 14:03:20,411 INFO L226 Difference]: Without dead ends: 344 [2024-12-02 14:03:20,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:03:20,412 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 184 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:03:20,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 492 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 14:03:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-12-02 14:03:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 240. [2024-12-02 14:03:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 143 states have internal predecessors, (166), 80 states have call successors, (80), 16 states have call predecessors, (80), 16 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 14:03:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 326 transitions. [2024-12-02 14:03:20,465 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 326 transitions. Word has length 251 [2024-12-02 14:03:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:03:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 326 transitions. [2024-12-02 14:03:20,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-12-02 14:03:20,466 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 326 transitions. [2024-12-02 14:03:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 14:03:20,467 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:20,468 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:20,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-12-02 14:03:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:03:20,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:20,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2114457865, now seen corresponding path program 1 times [2024-12-02 14:03:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:03:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404055896] [2024-12-02 14:03:20,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:20,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 14:03:20,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 14:03:20,671 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 14:03:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-02 14:03:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:21,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 14:03:21,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:03:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1517 proven. 150 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2024-12-02 14:03:33,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:03:41,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:03:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404055896] [2024-12-02 14:03:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404055896] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:03:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [424183047] [2024-12-02 14:03:41,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:41,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 14:03:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 14:03:41,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 14:03:41,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442c55d5-16a7-466c-a4d0-248ae1e3e9d7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 14:03:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:43,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 14:03:43,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:03:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1433 proven. 129 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2024-12-02 14:03:55,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:03:58,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [424183047] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:03:58,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:03:58,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2024-12-02 14:03:58,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234170246] [2024-12-02 14:03:58,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:03:58,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 14:03:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:03:58,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 14:03:58,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 14:03:58,729 INFO L87 Difference]: Start difference. First operand 240 states and 326 transitions. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 20 states have internal predecessors, (98), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50)