./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.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_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1 --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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:38:36,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:38:36,254 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 08:38:36,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:38:36,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:38:36,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:38:36,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:38:36,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:38:36,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:38:36,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:38:36,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:38:36,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:38:36,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:38:36,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:38:36,292 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:38:36,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:38:36,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:38:36,294 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:38:36,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:38:36,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:38:36,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:38:36,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:38:36,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:38:36,297 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_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2024-12-02 08:38:36,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:38:36,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:38:36,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:38:36,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:38:36,616 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:38:36,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-12-02 08:38:39,750 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/data/7c5335da0/f8c95669764149c1b0a6027e9e08b7dc/FLAG0d0ee0445 [2024-12-02 08:38:40,036 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:38:40,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-12-02 08:38:40,051 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/data/7c5335da0/f8c95669764149c1b0a6027e9e08b7dc/FLAG0d0ee0445 [2024-12-02 08:38:40,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/data/7c5335da0/f8c95669764149c1b0a6027e9e08b7dc [2024-12-02 08:38:40,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:38:40,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:38:40,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:38:40,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:38:40,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:38:40,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7811f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40, skipping insertion in model container [2024-12-02 08:38:40,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,111 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:38:40,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:38:40,454 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:38:40,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:38:40,535 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:38:40,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40 WrapperNode [2024-12-02 08:38:40,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:38:40,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:38:40,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:38:40,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:38:40,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,577 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2024-12-02 08:38:40,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:38:40,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:38:40,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:38:40,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:38:40,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,605 INFO L175 MemorySlicer]: Split 25 memory accesses to 6 slices as follows [2, 5, 2, 5, 5, 6]. 24 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 0, 5, 5, 1]. The 3 writes are split as follows [0, 0, 1, 0, 0, 2]. [2024-12-02 08:38:40,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:38:40,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:38:40,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:38:40,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:38:40,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (1/1) ... [2024-12-02 08:38:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:38:40,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:40,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:38:40,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7808e19-d727-42d9-b4c4-5c217657092f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:38:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:38:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 08:38:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 08:38:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:38:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:38:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 08:38:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 08:38:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 08:38:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:38:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:38:40,688 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:38:40,823 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:38:40,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:38:41,075 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:38:41,075 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:38:41,272 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:38:41,272 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 08:38:41,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:38:41 BoogieIcfgContainer [2024-12-02 08:38:41,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:38:41,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:38:41,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:38:41,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:38:41,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:38:40" (1/3) ... [2024-12-02 08:38:41,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e26e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:38:41, skipping insertion in model container [2024-12-02 08:38:41,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:38:40" (2/3) ... [2024-12-02 08:38:41,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e26e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:38:41, skipping insertion in model container [2024-12-02 08:38:41,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:38:41" (3/3) ... [2024-12-02 08:38:41,282 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-12-02 08:38:41,293 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:38:41,295 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_11-ptr_racing.i that has 2 procedures, 51 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-12-02 08:38:41,295 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:38:41,337 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 08:38:41,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-12-02 08:38:41,409 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-12-02 08:38:41,411 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:38:41,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 223 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-12-02 08:38:41,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-12-02 08:38:41,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-12-02 08:38:41,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:38:41,437 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;@1d8dba07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:38:41,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-02 08:38:41,443 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:38:41,443 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 08:38:41,443 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:38:41,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:41,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 08:38:41,444 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)] === [2024-12-02 08:38:41,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 359478301, now seen corresponding path program 1 times [2024-12-02 08:38:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:41,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008158702] [2024-12-02 08:38:41,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008158702] [2024-12-02 08:38:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008158702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:41,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:38:41,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967461079] [2024-12-02 08:38:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:41,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:38:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:41,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:38:41,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:38:41,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-12-02 08:38:41,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 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) [2024-12-02 08:38:41,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:41,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-12-02 08:38:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:38:42,048 INFO L124 PetriNetUnfolderBase]: 144/390 cut-off events. [2024-12-02 08:38:42,048 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:38:42,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 390 events. 144/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1830 event pairs, 20 based on Foata normal form. 78/439 useless extension candidates. Maximal degree in co-relation 683. Up to 277 conditions per place. [2024-12-02 08:38:42,052 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-12-02 08:38:42,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 259 flow [2024-12-02 08:38:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:38:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:38:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-12-02 08:38:42,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-12-02 08:38:42,067 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 163 transitions. [2024-12-02 08:38:42,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 259 flow [2024-12-02 08:38:42,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:38:42,078 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-12-02 08:38:42,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-12-02 08:38:42,083 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-12-02 08:38:42,084 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-12-02 08:38:42,084 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) [2024-12-02 08:38:42,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:42,084 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 08:38:42,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:38:42,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 08:38:42,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1864989438, now seen corresponding path program 1 times [2024-12-02 08:38:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996824178] [2024-12-02 08:38:42,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:38:42,118 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:38:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:38:42,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:38:42,157 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:38:42,158 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-12-02 08:38:42,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-02 08:38:42,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-02 08:38:42,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-02 08:38:42,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-02 08:38:42,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-02 08:38:42,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-02 08:38:42,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-02 08:38:42,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:38:42,163 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:38:42,166 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:38:42,166 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:38:42,194 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 08:38:42,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-12-02 08:38:42,227 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-12-02 08:38:42,227 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:38:42,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-12-02 08:38:42,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-12-02 08:38:42,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-12-02 08:38:42,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:38:42,233 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;@1d8dba07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:38:42,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-02 08:38:42,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:38:42,235 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 08:38:42,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:38:42,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:42,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 08:38:42,236 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)] === [2024-12-02 08:38:42,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:42,236 INFO L85 PathProgramCache]: Analyzing trace with hash 448258457, now seen corresponding path program 1 times [2024-12-02 08:38:42,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:42,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012331188] [2024-12-02 08:38:42,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:42,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012331188] [2024-12-02 08:38:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012331188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:42,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:38:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864556065] [2024-12-02 08:38:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:42,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:38:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:42,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:38:42,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:38:42,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 08:38:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 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) [2024-12-02 08:38:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 08:38:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:38:43,835 INFO L124 PetriNetUnfolderBase]: 4742/10044 cut-off events. [2024-12-02 08:38:43,835 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-12-02 08:38:43,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17634 conditions, 10044 events. 4742/10044 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 83449 event pairs, 2232 based on Foata normal form. 1800/10846 useless extension candidates. Maximal degree in co-relation 1308. Up to 7478 conditions per place. [2024-12-02 08:38:43,906 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 68 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-12-02 08:38:43,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 370 flow [2024-12-02 08:38:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:38:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:38:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-12-02 08:38:43,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-12-02 08:38:43,909 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 240 transitions. [2024-12-02 08:38:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 370 flow [2024-12-02 08:38:43,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:38:43,913 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-12-02 08:38:43,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-12-02 08:38:43,914 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-12-02 08:38:43,914 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-12-02 08:38:43,914 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) [2024-12-02 08:38:43,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:43,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 08:38:43,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:38:43,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 08:38:43,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash 317976949, now seen corresponding path program 1 times [2024-12-02 08:38:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:43,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252768902] [2024-12-02 08:38:43,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252768902] [2024-12-02 08:38:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252768902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:44,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:44,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:38:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768722387] [2024-12-02 08:38:44,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:44,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:38:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:44,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:38:44,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:38:44,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 08:38:44,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-12-02 08:38:44,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:44,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 08:38:44,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:38:45,348 INFO L124 PetriNetUnfolderBase]: 4430/8575 cut-off events. [2024-12-02 08:38:45,348 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2024-12-02 08:38:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16429 conditions, 8575 events. 4430/8575 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 66957 event pairs, 299 based on Foata normal form. 169/8178 useless extension candidates. Maximal degree in co-relation 1260. Up to 4698 conditions per place. [2024-12-02 08:38:45,393 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 112 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-12-02 08:38:45,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 153 transitions, 576 flow [2024-12-02 08:38:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:38:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:38:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-12-02 08:38:45,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.589605734767025 [2024-12-02 08:38:45,397 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 6 states and 329 transitions. [2024-12-02 08:38:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 153 transitions, 576 flow [2024-12-02 08:38:45,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 153 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:38:45,403 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 204 flow [2024-12-02 08:38:45,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-12-02 08:38:45,404 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2024-12-02 08:38:45,404 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 204 flow [2024-12-02 08:38:45,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-12-02 08:38:45,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:45,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:38:45,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:38:45,405 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)] === [2024-12-02 08:38:45,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1959510622, now seen corresponding path program 1 times [2024-12-02 08:38:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782972697] [2024-12-02 08:38:45,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782972697] [2024-12-02 08:38:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782972697] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:38:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478969431] [2024-12-02 08:38:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:38:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:45,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:38:45,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:38:45,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-12-02 08:38:45,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-12-02 08:38:45,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:45,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-12-02 08:38:45,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:38:46,862 INFO L124 PetriNetUnfolderBase]: 6470/13422 cut-off events. [2024-12-02 08:38:46,863 INFO L125 PetriNetUnfolderBase]: For 1500/1685 co-relation queries the response was YES. [2024-12-02 08:38:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 13422 events. 6470/13422 cut-off events. For 1500/1685 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 116749 event pairs, 1247 based on Foata normal form. 273/12580 useless extension candidates. Maximal degree in co-relation 23172. Up to 6083 conditions per place. [2024-12-02 08:38:46,913 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 163 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-12-02 08:38:46,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 216 transitions, 913 flow [2024-12-02 08:38:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:38:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:38:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 434 transitions. [2024-12-02 08:38:46,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 08:38:46,915 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 204 flow. Second operand 7 states and 434 transitions. [2024-12-02 08:38:46,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 216 transitions, 913 flow [2024-12-02 08:38:46,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 216 transitions, 886 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-12-02 08:38:46,922 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 324 flow [2024-12-02 08:38:46,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2024-12-02 08:38:46,923 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-12-02 08:38:46,923 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 324 flow [2024-12-02 08:38:46,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-12-02 08:38:46,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:46,924 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 08:38:46,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:38:46,924 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)] === [2024-12-02 08:38:46,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1267351317, now seen corresponding path program 1 times [2024-12-02 08:38:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211077280] [2024-12-02 08:38:46,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:46,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211077280] [2024-12-02 08:38:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211077280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:46,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:38:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090139541] [2024-12-02 08:38:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:46,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:38:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:46,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:38:46,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:38:46,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 08:38:46,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 324 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) [2024-12-02 08:38:46,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:46,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 08:38:46,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:38:48,181 INFO L124 PetriNetUnfolderBase]: 6285/12404 cut-off events. [2024-12-02 08:38:48,181 INFO L125 PetriNetUnfolderBase]: For 4934/4934 co-relation queries the response was YES. [2024-12-02 08:38:48,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26464 conditions, 12404 events. 6285/12404 cut-off events. For 4934/4934 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 101688 event pairs, 1916 based on Foata normal form. 177/11906 useless extension candidates. Maximal degree in co-relation 25690. Up to 8674 conditions per place. [2024-12-02 08:38:48,235 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 120 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-12-02 08:38:48,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 786 flow [2024-12-02 08:38:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:38:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:38:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-12-02 08:38:48,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-12-02 08:38:48,237 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 324 flow. Second operand 4 states and 232 transitions. [2024-12-02 08:38:48,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 786 flow [2024-12-02 08:38:48,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 782 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 08:38:48,262 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 336 flow [2024-12-02 08:38:48,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-12-02 08:38:48,263 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2024-12-02 08:38:48,263 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 336 flow [2024-12-02 08:38:48,264 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) [2024-12-02 08:38:48,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:48,264 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-02 08:38:48,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:38:48,264 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)] === [2024-12-02 08:38:48,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1846081662, now seen corresponding path program 1 times [2024-12-02 08:38:48,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424741616] [2024-12-02 08:38:48,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:38:48,291 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:38:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:38:48,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:38:48,314 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:38:48,314 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-12-02 08:38:48,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-12-02 08:38:48,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-12-02 08:38:48,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-12-02 08:38:48,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-12-02 08:38:48,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-12-02 08:38:48,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-12-02 08:38:48,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:38:48,316 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 08:38:48,317 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:38:48,317 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:38:48,357 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 08:38:48,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-12-02 08:38:48,388 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-12-02 08:38:48,388 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 08:38:48,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 950 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-12-02 08:38:48,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-12-02 08:38:48,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-12-02 08:38:48,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:38:48,394 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;@1d8dba07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:38:48,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-02 08:38:48,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:38:48,397 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 08:38:48,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:38:48,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:38:48,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 08:38:48,397 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)] === [2024-12-02 08:38:48,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash 568530678, now seen corresponding path program 1 times [2024-12-02 08:38:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:48,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675167815] [2024-12-02 08:38:48,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675167815] [2024-12-02 08:38:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675167815] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:38:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094289957] [2024-12-02 08:38:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:48,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:38:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:48,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:38:48,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:38:48,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 08:38:48,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 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) [2024-12-02 08:38:48,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:38:48,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 08:38:48,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:39:00,701 INFO L124 PetriNetUnfolderBase]: 97039/174425 cut-off events. [2024-12-02 08:39:00,701 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-12-02 08:39:00,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310077 conditions, 174425 events. 97039/174425 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 3690. Compared 1830764 event pairs, 63133 based on Foata normal form. 34763/193871 useless extension candidates. Maximal degree in co-relation 18255. Up to 134303 conditions per place. [2024-12-02 08:39:01,384 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 82 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-12-02 08:39:01,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 463 flow [2024-12-02 08:39:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:39:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:39:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-12-02 08:39:01,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-12-02 08:39:01,386 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 312 transitions. [2024-12-02 08:39:01,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 463 flow [2024-12-02 08:39:01,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:39:01,390 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-12-02 08:39:01,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-12-02 08:39:01,391 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-12-02 08:39:01,391 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-12-02 08:39:01,391 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) [2024-12-02 08:39:01,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:39:01,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:01,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:39:01,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 08:39:01,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2075344611, now seen corresponding path program 1 times [2024-12-02 08:39:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:39:01,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651705027] [2024-12-02 08:39:01,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:39:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:39:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:39:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651705027] [2024-12-02 08:39:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651705027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:39:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245688540] [2024-12-02 08:39:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:01,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:39:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:39:01,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:39:01,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:39:01,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-12-02 08:39:01,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2024-12-02 08:39:01,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:39:01,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-12-02 08:39:01,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:39:20,621 INFO L124 PetriNetUnfolderBase]: 147779/252738 cut-off events. [2024-12-02 08:39:20,621 INFO L125 PetriNetUnfolderBase]: For 8857/14439 co-relation queries the response was YES. [2024-12-02 08:39:21,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466459 conditions, 252738 events. 147779/252738 cut-off events. For 8857/14439 co-relation queries the response was YES. Maximal size of possible extension queue 5690. Compared 2647499 event pairs, 40828 based on Foata normal form. 4264/238367 useless extension candidates. Maximal degree in co-relation 466351. Up to 125335 conditions per place. [2024-12-02 08:39:21,762 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 247 selfloop transitions, 26 changer transitions 0/323 dead transitions. [2024-12-02 08:39:21,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 323 transitions, 1340 flow [2024-12-02 08:39:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:39:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:39:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2024-12-02 08:39:21,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-12-02 08:39:21,765 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 7 states and 618 transitions. [2024-12-02 08:39:21,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 323 transitions, 1340 flow [2024-12-02 08:39:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 323 transitions, 1335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:39:21,798 INFO L231 Difference]: Finished difference. Result has 126 places, 137 transitions, 463 flow [2024-12-02 08:39:21,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=126, PETRI_TRANSITIONS=137} [2024-12-02 08:39:21,799 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 16 predicate places. [2024-12-02 08:39:21,799 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 137 transitions, 463 flow [2024-12-02 08:39:21,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2024-12-02 08:39:21,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:39:21,799 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:21,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:39:21,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 08:39:21,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -446708843, now seen corresponding path program 1 times [2024-12-02 08:39:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:39:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579134814] [2024-12-02 08:39:21,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:39:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:39:21,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:39:21,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579134814] [2024-12-02 08:39:21,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579134814] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:21,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:21,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:39:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838226730] [2024-12-02 08:39:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:21,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:39:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:39:21,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:39:21,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:39:21,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 08:39:21,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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) [2024-12-02 08:39:21,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:39:21,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 08:39:21,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:39:42,894 INFO L124 PetriNetUnfolderBase]: 146189/244118 cut-off events. [2024-12-02 08:39:42,895 INFO L125 PetriNetUnfolderBase]: For 78309/78309 co-relation queries the response was YES. [2024-12-02 08:39:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519132 conditions, 244118 events. 146189/244118 cut-off events. For 78309/78309 co-relation queries the response was YES. Maximal size of possible extension queue 5262. Compared 2473066 event pairs, 30258 based on Foata normal form. 2518/231473 useless extension candidates. Maximal degree in co-relation 505661. Up to 158958 conditions per place. [2024-12-02 08:39:44,375 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 207 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2024-12-02 08:39:44,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 261 transitions, 1291 flow [2024-12-02 08:39:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:39:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:39:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2024-12-02 08:39:44,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2024-12-02 08:39:44,378 INFO L175 Difference]: Start difference. First operand has 126 places, 137 transitions, 463 flow. Second operand 6 states and 445 transitions. [2024-12-02 08:39:44,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 261 transitions, 1291 flow [2024-12-02 08:39:44,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 261 transitions, 1291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:39:44,944 INFO L231 Difference]: Finished difference. Result has 130 places, 136 transitions, 471 flow [2024-12-02 08:39:44,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=130, PETRI_TRANSITIONS=136} [2024-12-02 08:39:44,945 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 20 predicate places. [2024-12-02 08:39:44,945 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 136 transitions, 471 flow [2024-12-02 08:39:44,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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) [2024-12-02 08:39:44,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:39:44,945 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 08:39:44,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:39:44,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 08:39:44,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -963071629, now seen corresponding path program 1 times [2024-12-02 08:39:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:39:44,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026364455] [2024-12-02 08:39:44,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:39:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:39:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:39:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026364455] [2024-12-02 08:39:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026364455] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:39:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561384370] [2024-12-02 08:39:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:44,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:39:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:39:44,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:39:44,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:39:45,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 08:39:45,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 136 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 08:39:45,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:39:45,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 08:39:45,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:40:05,190 INFO L124 PetriNetUnfolderBase]: 139372/241027 cut-off events. [2024-12-02 08:40:05,190 INFO L125 PetriNetUnfolderBase]: For 91326/91326 co-relation queries the response was YES. [2024-12-02 08:40:05,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509561 conditions, 241027 events. 139372/241027 cut-off events. For 91326/91326 co-relation queries the response was YES. Maximal size of possible extension queue 5230. Compared 2519543 event pairs, 39377 based on Foata normal form. 2518/229624 useless extension candidates. Maximal degree in co-relation 496335. Up to 168318 conditions per place. [2024-12-02 08:40:06,451 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 182 selfloop transitions, 6 changer transitions 0/236 dead transitions. [2024-12-02 08:40:06,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 236 transitions, 1173 flow [2024-12-02 08:40:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:40:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:40:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2024-12-02 08:40:06,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-12-02 08:40:06,453 INFO L175 Difference]: Start difference. First operand has 130 places, 136 transitions, 471 flow. Second operand 4 states and 322 transitions. [2024-12-02 08:40:06,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 236 transitions, 1173 flow [2024-12-02 08:40:06,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 236 transitions, 1157 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 08:40:06,919 INFO L231 Difference]: Finished difference. Result has 128 places, 136 transitions, 471 flow [2024-12-02 08:40:06,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=128, PETRI_TRANSITIONS=136} [2024-12-02 08:40:06,919 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 18 predicate places. [2024-12-02 08:40:06,920 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 136 transitions, 471 flow [2024-12-02 08:40:06,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 08:40:06,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:40:06,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:40:06,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:40:06,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 08:40:06,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:40:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -501711136, now seen corresponding path program 1 times [2024-12-02 08:40:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:40:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109038639] [2024-12-02 08:40:06,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:40:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:40:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:40:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:40:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:40:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109038639] [2024-12-02 08:40:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109038639] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:40:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:40:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:40:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704783677] [2024-12-02 08:40:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:40:07,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:40:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:40:07,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:40:07,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:40:07,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-12-02 08:40:07,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 136 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2024-12-02 08:40:07,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:40:07,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-12-02 08:40:07,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:40:30,798 INFO L124 PetriNetUnfolderBase]: 171223/294380 cut-off events. [2024-12-02 08:40:30,798 INFO L125 PetriNetUnfolderBase]: For 119235/119781 co-relation queries the response was YES. [2024-12-02 08:40:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621857 conditions, 294380 events. 171223/294380 cut-off events. For 119235/119781 co-relation queries the response was YES. Maximal size of possible extension queue 6744. Compared 3161700 event pairs, 44013 based on Foata normal form. 10255/285760 useless extension candidates. Maximal degree in co-relation 603108. Up to 137540 conditions per place. [2024-12-02 08:40:32,334 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 255 selfloop transitions, 68 changer transitions 0/371 dead transitions. [2024-12-02 08:40:32,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 371 transitions, 1920 flow [2024-12-02 08:40:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:40:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:40:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2024-12-02 08:40:32,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-12-02 08:40:32,336 INFO L175 Difference]: Start difference. First operand has 128 places, 136 transitions, 471 flow. Second operand 7 states and 616 transitions. [2024-12-02 08:40:32,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 371 transitions, 1920 flow [2024-12-02 08:40:33,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 371 transitions, 1903 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:40:33,249 INFO L231 Difference]: Finished difference. Result has 137 places, 181 transitions, 969 flow [2024-12-02 08:40:33,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=969, PETRI_PLACES=137, PETRI_TRANSITIONS=181} [2024-12-02 08:40:33,250 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 27 predicate places. [2024-12-02 08:40:33,250 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 181 transitions, 969 flow [2024-12-02 08:40:33,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2024-12-02 08:40:33,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:40:33,251 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:40:33,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:40:33,251 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 08:40:33,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:40:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash -490616801, now seen corresponding path program 1 times [2024-12-02 08:40:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:40:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041257387] [2024-12-02 08:40:33,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:40:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:40:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:40:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:40:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:40:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041257387] [2024-12-02 08:40:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041257387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:40:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:40:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:40:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039062495] [2024-12-02 08:40:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:40:33,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:40:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:40:33,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:40:33,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:40:33,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2024-12-02 08:40:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 181 transitions, 969 flow. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 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) [2024-12-02 08:40:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:40:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2024-12-02 08:40:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand