./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.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_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:43:53,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:43:53,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:43:53,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:43:53,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:43:53,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:43:53,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:43:53,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:43:53,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:43:53,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:43:53,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:43:53,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:43:53,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:43:53,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:43:53,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:43:53,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:43:53,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:43:53,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:43:53,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:43:53,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:43:53,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:43:53,582 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:43:53,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:43:53,582 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:43:53,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:43:53,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:43:53,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:43:53,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:43:53,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:43:53,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:43:53,584 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:43:53,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:43:53,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:43:53,585 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_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-11-28 02:43:53,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:43:53,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:43:53,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:43:53,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:43:53,974 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:43:53,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-28 02:43:57,342 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/data/f17d9c719/0c96977d8d884db5bcfea45d96af79f2/FLAG2ac772a4e [2024-11-28 02:43:57,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:43:57,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-28 02:43:57,753 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/data/f17d9c719/0c96977d8d884db5bcfea45d96af79f2/FLAG2ac772a4e [2024-11-28 02:43:57,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/data/f17d9c719/0c96977d8d884db5bcfea45d96af79f2 [2024-11-28 02:43:57,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:43:57,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:43:57,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:43:57,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:43:57,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:43:57,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:43:57" (1/1) ... [2024-11-28 02:43:57,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c1ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:57, skipping insertion in model container [2024-11-28 02:43:57,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:43:57" (1/1) ... [2024-11-28 02:43:57,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:43:58,060 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_c8a886e9-39f8-49cb-8e98-6781b998097f/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-28 02:43:58,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:43:58,238 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:43:58,252 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_c8a886e9-39f8-49cb-8e98-6781b998097f/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-28 02:43:58,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:43:58,350 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:43:58,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58 WrapperNode [2024-11-28 02:43:58,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:43:58,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:43:58,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:43:58,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:43:58,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,416 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-11-28 02:43:58,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:43:58,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:43:58,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:43:58,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:43:58,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,457 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 02:43:58,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:43:58,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:43:58,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:43:58,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:43:58,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (1/1) ... [2024-11-28 02:43:58,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:43:58,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:58,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:43:58,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8a886e9-39f8-49cb-8e98-6781b998097f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:43:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-28 02:43:58,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-28 02:43:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-11-28 02:43:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:43:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:43:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:43:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:43:58,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:43:58,565 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:43:58,717 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:43:58,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:43:59,067 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:43:59,068 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:43:59,293 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:43:59,294 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:43:59,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:43:59 BoogieIcfgContainer [2024-11-28 02:43:59,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:43:59,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:43:59,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:43:59,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:43:59,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:43:57" (1/3) ... [2024-11-28 02:43:59,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b1c345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:43:59, skipping insertion in model container [2024-11-28 02:43:59,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:58" (2/3) ... [2024-11-28 02:43:59,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b1c345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:43:59, skipping insertion in model container [2024-11-28 02:43:59,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:43:59" (3/3) ... [2024-11-28 02:43:59,311 INFO L128 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-11-28 02:43:59,330 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:43:59,331 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36-apron_21-traces-cluster-based_true.i that has 4 procedures, 64 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-28 02:43:59,332 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:43:59,399 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:43:59,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-11-28 02:43:59,491 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-11-28 02:43:59,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:43:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-28 02:43:59,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-11-28 02:43:59,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-11-28 02:43:59,522 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:43:59,544 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;@3daeaa46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:43:59,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 02:43:59,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:43:59,557 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-11-28 02:43:59,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:43:59,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:59,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:59,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:43:59,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1047439611, now seen corresponding path program 1 times [2024-11-28 02:43:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:59,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5272383] [2024-11-28 02:43:59,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5272383] [2024-11-28 02:44:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5272383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:44:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997428315] [2024-11-28 02:44:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:00,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:00,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:00,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:00,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 02:44:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:00,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:00,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 02:44:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:06,423 INFO L124 PetriNetUnfolderBase]: 30713/46966 cut-off events. [2024-11-28 02:44:06,424 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-28 02:44:06,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90095 conditions, 46966 events. 30713/46966 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 351067 event pairs, 7163 based on Foata normal form. 3860/49784 useless extension candidates. Maximal degree in co-relation 90084. Up to 11332 conditions per place. [2024-11-28 02:44:06,698 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2024-11-28 02:44:06,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2024-11-28 02:44:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:44:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:44:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2024-11-28 02:44:06,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2024-11-28 02:44:06,723 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 401 transitions. [2024-11-28 02:44:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 220 transitions, 872 flow [2024-11-28 02:44:06,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 220 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:44:06,745 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-11-28 02:44:06,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-28 02:44:06,753 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-28 02:44:06,753 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-11-28 02:44:06,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:06,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:06,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:06,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:44:06,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:06,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1610142895, now seen corresponding path program 1 times [2024-11-28 02:44:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417699548] [2024-11-28 02:44:06,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417699548] [2024-11-28 02:44:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417699548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:07,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:44:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873749741] [2024-11-28 02:44:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:07,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:07,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:07,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-28 02:44:07,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:07,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:07,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-28 02:44:07,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:12,920 INFO L124 PetriNetUnfolderBase]: 46522/71671 cut-off events. [2024-11-28 02:44:12,921 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2024-11-28 02:44:13,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153092 conditions, 71671 events. 46522/71671 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 569589 event pairs, 9900 based on Foata normal form. 0/70263 useless extension candidates. Maximal degree in co-relation 153078. Up to 27642 conditions per place. [2024-11-28 02:44:13,255 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 193 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2024-11-28 02:44:13,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 1054 flow [2024-11-28 02:44:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:44:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:44:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2024-11-28 02:44:13,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-11-28 02:44:13,258 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 346 transitions. [2024-11-28 02:44:13,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 1054 flow [2024-11-28 02:44:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:44:14,102 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-11-28 02:44:14,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-28 02:44:14,103 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-28 02:44:14,103 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-11-28 02:44:14,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:14,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:14,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:14,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:44:14,104 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:14,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 719434576, now seen corresponding path program 1 times [2024-11-28 02:44:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804571772] [2024-11-28 02:44:14,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:14,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804571772] [2024-11-28 02:44:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804571772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:14,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:44:14,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279175231] [2024-11-28 02:44:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:14,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:14,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:14,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:14,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 02:44:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:14,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:14,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 02:44:14,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:22,129 INFO L124 PetriNetUnfolderBase]: 60127/97639 cut-off events. [2024-11-28 02:44:22,129 INFO L125 PetriNetUnfolderBase]: For 38504/38959 co-relation queries the response was YES. [2024-11-28 02:44:22,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226000 conditions, 97639 events. 60127/97639 cut-off events. For 38504/38959 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 870448 event pairs, 20848 based on Foata normal form. 0/96306 useless extension candidates. Maximal degree in co-relation 225980. Up to 41717 conditions per place. [2024-11-28 02:44:22,531 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 215 selfloop transitions, 17 changer transitions 3/257 dead transitions. [2024-11-28 02:44:22,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 257 transitions, 1362 flow [2024-11-28 02:44:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:44:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:44:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-11-28 02:44:22,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-11-28 02:44:22,533 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 363 transitions. [2024-11-28 02:44:22,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 257 transitions, 1362 flow [2024-11-28 02:44:26,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 257 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:44:26,359 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-11-28 02:44:26,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-28 02:44:26,360 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-28 02:44:26,361 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-11-28 02:44:26,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:26,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:26,361 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:26,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:44:26,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:26,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash 400966673, now seen corresponding path program 1 times [2024-11-28 02:44:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614613016] [2024-11-28 02:44:26,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:26,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614613016] [2024-11-28 02:44:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614613016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:26,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976236062] [2024-11-28 02:44:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:26,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:26,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:26,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:26,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-11-28 02:44:26,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:26,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:26,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-11-28 02:44:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:32,071 INFO L124 PetriNetUnfolderBase]: 38911/66921 cut-off events. [2024-11-28 02:44:32,071 INFO L125 PetriNetUnfolderBase]: For 41210/42412 co-relation queries the response was YES. [2024-11-28 02:44:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169790 conditions, 66921 events. 38911/66921 cut-off events. For 41210/42412 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 631582 event pairs, 13965 based on Foata normal form. 3031/69788 useless extension candidates. Maximal degree in co-relation 169764. Up to 34535 conditions per place. [2024-11-28 02:44:32,465 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 118 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2024-11-28 02:44:32,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 942 flow [2024-11-28 02:44:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:44:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-28 02:44:32,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-11-28 02:44:32,467 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 150 transitions. [2024-11-28 02:44:32,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 942 flow [2024-11-28 02:44:36,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:44:36,227 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-11-28 02:44:36,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-28 02:44:36,228 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-11-28 02:44:36,228 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-11-28 02:44:36,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:36,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:36,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:36,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:44:36,228 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:36,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:36,229 INFO L85 PathProgramCache]: Analyzing trace with hash 709116081, now seen corresponding path program 1 times [2024-11-28 02:44:36,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:36,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784901100] [2024-11-28 02:44:36,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784901100] [2024-11-28 02:44:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784901100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:44:36,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100035157] [2024-11-28 02:44:36,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:36,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:36,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:36,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:36,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:36,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-11-28 02:44:36,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:36,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:36,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-11-28 02:44:36,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:39,879 INFO L124 PetriNetUnfolderBase]: 20387/36627 cut-off events. [2024-11-28 02:44:39,879 INFO L125 PetriNetUnfolderBase]: For 30812/31812 co-relation queries the response was YES. [2024-11-28 02:44:39,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103013 conditions, 36627 events. 20387/36627 cut-off events. For 30812/31812 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 327574 event pairs, 5653 based on Foata normal form. 1395/37913 useless extension candidates. Maximal degree in co-relation 102985. Up to 18926 conditions per place. [2024-11-28 02:44:40,137 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2024-11-28 02:44:40,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 853 flow [2024-11-28 02:44:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-28 02:44:40,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-11-28 02:44:40,142 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 160 transitions. [2024-11-28 02:44:40,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 853 flow [2024-11-28 02:44:41,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:44:41,357 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-11-28 02:44:41,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-11-28 02:44:41,358 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-11-28 02:44:41,358 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-11-28 02:44:41,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:41,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:41,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:41,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:44:41,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:41,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash 236048221, now seen corresponding path program 1 times [2024-11-28 02:44:41,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:41,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029220345] [2024-11-28 02:44:41,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:41,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:41,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029220345] [2024-11-28 02:44:41,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029220345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:41,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:41,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:44:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151404434] [2024-11-28 02:44:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:41,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:44:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:41,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:44:41,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:44:41,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 02:44:41,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:41,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:41,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 02:44:41,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:46,004 INFO L124 PetriNetUnfolderBase]: 24250/40158 cut-off events. [2024-11-28 02:44:46,004 INFO L125 PetriNetUnfolderBase]: For 35796/36716 co-relation queries the response was YES. [2024-11-28 02:44:46,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116793 conditions, 40158 events. 24250/40158 cut-off events. For 35796/36716 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 331715 event pairs, 4853 based on Foata normal form. 545/40624 useless extension candidates. Maximal degree in co-relation 116764. Up to 11342 conditions per place. [2024-11-28 02:44:46,193 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 202 selfloop transitions, 27 changer transitions 27/277 dead transitions. [2024-11-28 02:44:46,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 1812 flow [2024-11-28 02:44:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:44:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:44:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2024-11-28 02:44:46,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2024-11-28 02:44:46,196 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 350 transitions. [2024-11-28 02:44:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 1812 flow [2024-11-28 02:44:46,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 277 transitions, 1758 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:44:46,974 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-11-28 02:44:46,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-11-28 02:44:46,975 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-28 02:44:46,975 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-11-28 02:44:46,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:46,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:46,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:46,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:44:46,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:46,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1083601452, now seen corresponding path program 1 times [2024-11-28 02:44:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:46,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599150384] [2024-11-28 02:44:46,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:46,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:47,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599150384] [2024-11-28 02:44:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599150384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:47,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:44:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406581449] [2024-11-28 02:44:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:47,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:44:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:47,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:44:47,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:44:47,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-28 02:44:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:47,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-28 02:44:47,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:51,926 INFO L124 PetriNetUnfolderBase]: 22611/36771 cut-off events. [2024-11-28 02:44:51,927 INFO L125 PetriNetUnfolderBase]: For 36052/36123 co-relation queries the response was YES. [2024-11-28 02:44:52,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108624 conditions, 36771 events. 22611/36771 cut-off events. For 36052/36123 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 290088 event pairs, 4720 based on Foata normal form. 650/37390 useless extension candidates. Maximal degree in co-relation 108596. Up to 7735 conditions per place. [2024-11-28 02:44:52,072 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 204 selfloop transitions, 41 changer transitions 33/295 dead transitions. [2024-11-28 02:44:52,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 295 transitions, 1911 flow [2024-11-28 02:44:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:44:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:44:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2024-11-28 02:44:52,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2024-11-28 02:44:52,075 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 447 transitions. [2024-11-28 02:44:52,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 295 transitions, 1911 flow [2024-11-28 02:44:52,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 1908 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:44:52,438 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-11-28 02:44:52,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-28 02:44:52,439 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-11-28 02:44:52,440 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-11-28 02:44:52,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:52,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:52,440 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:52,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:44:52,440 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-28 02:44:52,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 288745811, now seen corresponding path program 1 times [2024-11-28 02:44:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:52,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698396615] [2024-11-28 02:44:52,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698396615] [2024-11-28 02:44:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698396615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:52,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:44:52,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287698378] [2024-11-28 02:44:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:52,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:44:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:52,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:44:52,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:44:52,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 02:44:52,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 02:44:52,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:57,046 INFO L124 PetriNetUnfolderBase]: 21659/35739 cut-off events. [2024-11-28 02:44:57,046 INFO L125 PetriNetUnfolderBase]: For 54189/54682 co-relation queries the response was YES. [2024-11-28 02:44:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113969 conditions, 35739 events. 21659/35739 cut-off events. For 54189/54682 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 283306 event pairs, 5623 based on Foata normal form. 422/36121 useless extension candidates. Maximal degree in co-relation 113937. Up to 7264 conditions per place. [2024-11-28 02:44:57,198 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 107 selfloop transitions, 20 changer transitions 150/293 dead transitions. [2024-11-28 02:44:57,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 293 transitions, 2117 flow [2024-11-28 02:44:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:44:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:44:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2024-11-28 02:44:57,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5855614973262032 [2024-11-28 02:44:57,201 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 438 transitions. [2024-11-28 02:44:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 293 transitions, 2117 flow