./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/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_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:17:19,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:17:19,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:17:19,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:17:19,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:17:19,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:17:19,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:17:19,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:17:19,543 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:17:19,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:17:19,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:17:19,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:17:19,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:17:19,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:17:19,544 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:17:19,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:17:19,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:17:19,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:17:19,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:17:19,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:17:19,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:17:19,546 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:17:19,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:17:19,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:17:19,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:17:19,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:17:19,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:17:19,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:17:19,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:17:19,548 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:17:19,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:17:19,550 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_ebb4efa2-f150-4cb8-808d-de91f35a40a3/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 ! overflow) ) 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 -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-11-28 02:17:19,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:17:19,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:17:19,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:17:19,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:17:19,857 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:17:19,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-28 02:17:22,850 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/data/c8b26116d/3a509d2b68da470296d85a7a9ef77852/FLAG95f69fae5 [2024-11-28 02:17:23,223 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:17:23,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-28 02:17:23,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/data/c8b26116d/3a509d2b68da470296d85a7a9ef77852/FLAG95f69fae5 [2024-11-28 02:17:23,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/data/c8b26116d/3a509d2b68da470296d85a7a9ef77852 [2024-11-28 02:17:23,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:17:23,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:17:23,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:17:23,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:17:23,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:17:23,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52654556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23, skipping insertion in model container [2024-11-28 02:17:23,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:17:23,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:17:23,693 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:17:23,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:17:23,783 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:17:23,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23 WrapperNode [2024-11-28 02:17:23,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:17:23,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:17:23,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:17:23,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:17:23,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,827 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-11-28 02:17:23,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:17:23,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:17:23,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:17:23,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:17:23,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,861 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-28 02:17:23,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,868 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:17:23,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:17:23,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:17:23,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:17:23,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (1/1) ... [2024-11-28 02:17:23,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:17:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:23,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:23,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb4efa2-f150-4cb8-808d-de91f35a40a3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:17:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:17:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:17:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:17:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:17:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:17:23,969 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 02:17:24,156 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:17:24,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:17:24,538 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:17:24,538 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:17:24,735 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:17:24,735 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:17:24,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:24 BoogieIcfgContainer [2024-11-28 02:17:24,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:17:24,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:17:24,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:17:24,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:17:24,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:17:23" (1/3) ... [2024-11-28 02:17:24,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ed83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:17:24, skipping insertion in model container [2024-11-28 02:17:24,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:23" (2/3) ... [2024-11-28 02:17:24,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ed83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:17:24, skipping insertion in model container [2024-11-28 02:17:24,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:24" (3/3) ... [2024-11-28 02:17:24,751 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-11-28 02:17:24,767 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:17:24,769 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_05-lockfuns_racefree.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-11-28 02:17:24,769 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:17:24,845 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 02:17:24,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 62 transitions, 131 flow [2024-11-28 02:17:24,938 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2024-11-28 02:17:24,940 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:17:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 11/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 232 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-28 02:17:24,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 62 transitions, 131 flow [2024-11-28 02:17:24,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 129 flow [2024-11-28 02:17:24,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:17:24,973 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;@3d3fb1bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:17:24,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 02:17:24,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:17:24,985 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-28 02:17:24,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:17:24,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:24,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:17:24,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 02:17:24,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash 343946397, now seen corresponding path program 1 times [2024-11-28 02:17:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316190087] [2024-11-28 02:17:25,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:25,380 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 02:17:25,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316190087] [2024-11-28 02:17:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316190087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:25,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:25,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347166070] [2024-11-28 02:17:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:25,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:25,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:25,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:25,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 02:17:25,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 02:17:25,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:25,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 02:17:25,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:25,811 INFO L124 PetriNetUnfolderBase]: 182/508 cut-off events. [2024-11-28 02:17:25,811 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:17:25,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 508 events. 182/508 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2517 event pairs, 26 based on Foata normal form. 88/540 useless extension candidates. Maximal degree in co-relation 877. Up to 282 conditions per place. [2024-11-28 02:17:25,820 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 52 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-28 02:17:25,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 275 flow [2024-11-28 02:17:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-11-28 02:17:25,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6653225806451613 [2024-11-28 02:17:25,837 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 129 flow. Second operand 4 states and 165 transitions. [2024-11-28 02:17:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 275 flow [2024-11-28 02:17:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:17:25,846 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 119 flow [2024-11-28 02:17:25,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-28 02:17:25,852 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-28 02:17:25,852 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 119 flow [2024-11-28 02:17:25,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 02:17:25,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:25,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:17:25,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:17:25,853 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 02:17:25,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:25,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2072404067, now seen corresponding path program 1 times [2024-11-28 02:17:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728010714] [2024-11-28 02:17:25,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:25,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:25,945 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 02:17:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728010714] [2024-11-28 02:17:25,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728010714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805359432] [2024-11-28 02:17:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:25,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:25,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:25,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:25,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 02:17:25,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 02:17:25,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:25,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 02:17:25,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:26,213 INFO L124 PetriNetUnfolderBase]: 169/449 cut-off events. [2024-11-28 02:17:26,213 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:17:26,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 449 events. 169/449 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2133 event pairs, 22 based on Foata normal form. 15/444 useless extension candidates. Maximal degree in co-relation 834. Up to 326 conditions per place. [2024-11-28 02:17:26,217 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 53 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-28 02:17:26,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 283 flow [2024-11-28 02:17:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-28 02:17:26,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-11-28 02:17:26,220 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 119 flow. Second operand 4 states and 146 transitions. [2024-11-28 02:17:26,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 283 flow [2024-11-28 02:17:26,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:17:26,224 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2024-11-28 02:17:26,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-28 02:17:26,225 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-28 02:17:26,225 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2024-11-28 02:17:26,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 02:17:26,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:26,226 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:26,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:17:26,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 02:17:26,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1284505985, now seen corresponding path program 1 times [2024-11-28 02:17:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645547089] [2024-11-28 02:17:26,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:26,266 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:26,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:17:26,347 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:17:26,348 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 02:17:26,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-28 02:17:26,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-28 02:17:26,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-28 02:17:26,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-28 02:17:26,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-28 02:17:26,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-28 02:17:26,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-28 02:17:26,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-28 02:17:26,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-28 02:17:26,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-28 02:17:26,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-28 02:17:26,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-28 02:17:26,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:17:26,354 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 02:17:26,361 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:17:26,361 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:17:26,422 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:17:26,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 96 transitions, 208 flow [2024-11-28 02:17:26,457 INFO L124 PetriNetUnfolderBase]: 21/147 cut-off events. [2024-11-28 02:17:26,457 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:17:26,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 21/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-11-28 02:17:26,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 96 transitions, 208 flow [2024-11-28 02:17:26,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 96 transitions, 208 flow [2024-11-28 02:17:26,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:17:26,465 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;@3d3fb1bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:17:26,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 02:17:26,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:17:26,468 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 02:17:26,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:17:26,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:26,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:17:26,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:17:26,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 435590429, now seen corresponding path program 1 times [2024-11-28 02:17:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246386479] [2024-11-28 02:17:26,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:26,535 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 02:17:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246386479] [2024-11-28 02:17:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246386479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259268684] [2024-11-28 02:17:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:26,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:26,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:26,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:26,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-28 02:17:26,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 02:17:26,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:26,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-28 02:17:26,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:28,208 INFO L124 PetriNetUnfolderBase]: 5541/10437 cut-off events. [2024-11-28 02:17:28,208 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-28 02:17:28,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 10437 events. 5541/10437 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 80469 event pairs, 936 based on Foata normal form. 2148/11665 useless extension candidates. Maximal degree in co-relation 12950. Up to 6033 conditions per place. [2024-11-28 02:17:28,290 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 94 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-28 02:17:28,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 478 flow [2024-11-28 02:17:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-11-28 02:17:28,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-11-28 02:17:28,298 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 208 flow. Second operand 4 states and 277 transitions. [2024-11-28 02:17:28,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 478 flow [2024-11-28 02:17:28,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:17:28,303 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 186 flow [2024-11-28 02:17:28,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-28 02:17:28,305 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2024-11-28 02:17:28,307 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 186 flow [2024-11-28 02:17:28,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 02:17:28,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:28,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:17:28,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:17:28,308 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:17:28,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash 618401859, now seen corresponding path program 1 times [2024-11-28 02:17:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137555746] [2024-11-28 02:17:28,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:28,424 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 02:17:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137555746] [2024-11-28 02:17:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137555746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886993466] [2024-11-28 02:17:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:28,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:28,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:28,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:28,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-28 02:17:28,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 02:17:28,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:28,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-28 02:17:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:29,916 INFO L124 PetriNetUnfolderBase]: 5527/11628 cut-off events. [2024-11-28 02:17:29,916 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2024-11-28 02:17:29,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 11628 events. 5527/11628 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 96992 event pairs, 2600 based on Foata normal form. 15/10932 useless extension candidates. Maximal degree in co-relation 1450. Up to 8697 conditions per place. [2024-11-28 02:17:29,997 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 72 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-11-28 02:17:29,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 398 flow [2024-11-28 02:17:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-28 02:17:30,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-11-28 02:17:30,002 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 186 flow. Second operand 4 states and 217 transitions. [2024-11-28 02:17:30,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 398 flow [2024-11-28 02:17:30,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:17:30,011 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 200 flow [2024-11-28 02:17:30,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-11-28 02:17:30,014 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-11-28 02:17:30,015 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 200 flow [2024-11-28 02:17:30,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 02:17:30,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:30,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:30,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:17:30,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:17:30,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1945075980, now seen corresponding path program 1 times [2024-11-28 02:17:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593863205] [2024-11-28 02:17:30,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:30,130 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 02:17:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593863205] [2024-11-28 02:17:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593863205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303576941] [2024-11-28 02:17:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:30,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:30,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:30,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:30,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-11-28 02:17:30,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 02:17:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:30,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-11-28 02:17:30,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:32,319 INFO L124 PetriNetUnfolderBase]: 7335/15582 cut-off events. [2024-11-28 02:17:32,320 INFO L125 PetriNetUnfolderBase]: For 578/793 co-relation queries the response was YES. [2024-11-28 02:17:32,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 15582 events. 7335/15582 cut-off events. For 578/793 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 138144 event pairs, 2168 based on Foata normal form. 260/14668 useless extension candidates. Maximal degree in co-relation 27802. Up to 7118 conditions per place. [2024-11-28 02:17:32,399 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 132 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-11-28 02:17:32,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 722 flow [2024-11-28 02:17:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:17:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:17:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2024-11-28 02:17:32,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-11-28 02:17:32,402 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 200 flow. Second operand 5 states and 325 transitions. [2024-11-28 02:17:32,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 722 flow [2024-11-28 02:17:32,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:17:32,414 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 292 flow [2024-11-28 02:17:32,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-11-28 02:17:32,415 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-11-28 02:17:32,415 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 292 flow [2024-11-28 02:17:32,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 02:17:32,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:32,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:17:32,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:17:32,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:17:32,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1569223272, now seen corresponding path program 1 times [2024-11-28 02:17:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068621104] [2024-11-28 02:17:32,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:32,520 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 02:17:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068621104] [2024-11-28 02:17:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068621104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:32,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:32,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:17:32,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999596519] [2024-11-28 02:17:32,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:32,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:32,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:32,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:32,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-28 02:17:32,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:17:32,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:32,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-28 02:17:32,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:34,117 INFO L124 PetriNetUnfolderBase]: 7271/14435 cut-off events. [2024-11-28 02:17:34,117 INFO L125 PetriNetUnfolderBase]: For 4403/4408 co-relation queries the response was YES. [2024-11-28 02:17:34,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30126 conditions, 14435 events. 7271/14435 cut-off events. For 4403/4408 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 121443 event pairs, 2329 based on Foata normal form. 0/13612 useless extension candidates. Maximal degree in co-relation 20352. Up to 10013 conditions per place. [2024-11-28 02:17:34,214 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 115 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-28 02:17:34,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 720 flow [2024-11-28 02:17:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-28 02:17:34,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-11-28 02:17:34,217 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 292 flow. Second operand 4 states and 239 transitions. [2024-11-28 02:17:34,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 720 flow [2024-11-28 02:17:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:17:34,232 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 308 flow [2024-11-28 02:17:34,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-11-28 02:17:34,236 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-11-28 02:17:34,236 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 308 flow [2024-11-28 02:17:34,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:17:34,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:34,237 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 02:17:34,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:17:34,237 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:17:34,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 490057572, now seen corresponding path program 1 times [2024-11-28 02:17:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489459160] [2024-11-28 02:17:34,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:34,278 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:34,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:17:34,303 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:17:34,303 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 02:17:34,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-28 02:17:34,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-28 02:17:34,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-28 02:17:34,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-28 02:17:34,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-28 02:17:34,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-28 02:17:34,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:17:34,306 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:17:34,307 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:17:34,307 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:17:34,353 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:17:34,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 287 flow [2024-11-28 02:17:34,396 INFO L124 PetriNetUnfolderBase]: 34/235 cut-off events. [2024-11-28 02:17:34,397 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 02:17:34,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 235 events. 34/235 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 162. Up to 12 conditions per place. [2024-11-28 02:17:34,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 287 flow [2024-11-28 02:17:34,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 287 flow [2024-11-28 02:17:34,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:17:34,403 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;@3d3fb1bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:17:34,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 02:17:34,408 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:17:34,408 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-28 02:17:34,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:17:34,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:34,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:17:34,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 02:17:34,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 559680831, now seen corresponding path program 1 times [2024-11-28 02:17:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404726534] [2024-11-28 02:17:34,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:34,479 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 02:17:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404726534] [2024-11-28 02:17:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404726534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:34,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146607882] [2024-11-28 02:17:34,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:34,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:34,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:34,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:34,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-11-28 02:17:34,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:17:34,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:34,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-11-28 02:17:34,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:17:48,748 INFO L124 PetriNetUnfolderBase]: 121220/195109 cut-off events. [2024-11-28 02:17:48,748 INFO L125 PetriNetUnfolderBase]: For 2007/2007 co-relation queries the response was YES. [2024-11-28 02:17:49,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364050 conditions, 195109 events. 121220/195109 cut-off events. For 2007/2007 co-relation queries the response was YES. Maximal size of possible extension queue 3778. Compared 1844895 event pairs, 20717 based on Foata normal form. 43359/223985 useless extension candidates. Maximal degree in co-relation 168087. Up to 115300 conditions per place. [2024-11-28 02:17:49,874 INFO L140 encePairwiseOnDemand]: 105/130 looper letters, 135 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2024-11-28 02:17:49,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 187 transitions, 679 flow [2024-11-28 02:17:49,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:17:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-28 02:17:49,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7461538461538462 [2024-11-28 02:17:49,878 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 287 flow. Second operand 4 states and 388 transitions. [2024-11-28 02:17:49,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 187 transitions, 679 flow [2024-11-28 02:17:49,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 187 transitions, 679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:17:49,888 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 253 flow [2024-11-28 02:17:49,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-11-28 02:17:49,889 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2024-11-28 02:17:49,890 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 253 flow [2024-11-28 02:17:49,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:17:49,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:17:49,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:17:49,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:17:49,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 02:17:49,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 170237155, now seen corresponding path program 1 times [2024-11-28 02:17:49,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336265689] [2024-11-28 02:17:49,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:49,959 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 02:17:49,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336265689] [2024-11-28 02:17:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336265689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:49,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722917232] [2024-11-28 02:17:49,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:49,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:49,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:49,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:49,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-11-28 02:17:49,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:17:49,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:17:49,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-11-28 02:17:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:18:05,390 INFO L124 PetriNetUnfolderBase]: 121206/215568 cut-off events. [2024-11-28 02:18:05,390 INFO L125 PetriNetUnfolderBase]: For 10852/10852 co-relation queries the response was YES. [2024-11-28 02:18:05,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393338 conditions, 215568 events. 121206/215568 cut-off events. For 10852/10852 co-relation queries the response was YES. Maximal size of possible extension queue 4360. Compared 2269244 event pairs, 85388 based on Foata normal form. 15/203055 useless extension candidates. Maximal degree in co-relation 36127. Up to 167356 conditions per place. [2024-11-28 02:18:06,314 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 87 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-11-28 02:18:06,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 138 transitions, 495 flow [2024-11-28 02:18:06,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:18:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:18:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-11-28 02:18:06,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-11-28 02:18:06,316 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 253 flow. Second operand 4 states and 284 transitions. [2024-11-28 02:18:06,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 138 transitions, 495 flow [2024-11-28 02:18:06,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:18:06,330 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2024-11-28 02:18:06,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-11-28 02:18:06,330 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2024-11-28 02:18:06,330 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2024-11-28 02:18:06,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:18:06,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:18:06,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:06,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:18:06,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 02:18:06,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 220771412, now seen corresponding path program 1 times [2024-11-28 02:18:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690348319] [2024-11-28 02:18:06,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:18:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:06,390 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 02:18:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:18:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690348319] [2024-11-28 02:18:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690348319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081913400] [2024-11-28 02:18:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:06,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:18:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:18:06,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:18:06,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:06,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 130 [2024-11-28 02:18:06,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 02:18:06,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:18:06,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 130 [2024-11-28 02:18:06,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand