./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_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_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/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_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/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_416f08dd-85af-4b28-9a2f-25ce331f0ea6/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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:00:04,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:00:04,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-01 23:00:04,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:00:04,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:00:04,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:00:04,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:00:04,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:00:04,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:00:04,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:00:04,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:00:04,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:00:04,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:00:04,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:00:04,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:00:04,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:00:04,903 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:00:04,903 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:00:04,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:00:04,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:00:04,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:00:04,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:00:04,906 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_416f08dd-85af-4b28-9a2f-25ce331f0ea6/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 -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-12-01 23:00:05,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:00:05,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:00:05,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:00:05,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:00:05,126 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:00:05,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-12-01 23:00:07,812 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/data/83704dabf/176db574b10f4dc7b26a3dc58989cf22/FLAG5cd45dbcc [2024-12-01 23:00:08,094 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:00:08,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-12-01 23:00:08,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/data/83704dabf/176db574b10f4dc7b26a3dc58989cf22/FLAG5cd45dbcc [2024-12-01 23:00:08,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/data/83704dabf/176db574b10f4dc7b26a3dc58989cf22 [2024-12-01 23:00:08,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:00:08,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:00:08,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:00:08,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:00:08,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:00:08,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52419024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08, skipping insertion in model container [2024-12-01 23:00:08,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:00:08,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:00:08,724 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:00:08,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:00:08,797 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:00:08,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08 WrapperNode [2024-12-01 23:00:08,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:00:08,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:00:08,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:00:08,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:00:08,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,833 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-12-01 23:00:08,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:00:08,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:00:08,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:00:08,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:00:08,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,855 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 10, 2]. 53 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-12-01 23:00:08,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:00:08,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:00:08,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:00:08,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:00:08,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (1/1) ... [2024-12-01 23:00:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:00:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:08,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:00:08,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_416f08dd-85af-4b28-9a2f-25ce331f0ea6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:00:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-01 23:00:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-01 23:00:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-01 23:00:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:00:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 23:00:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 23:00:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-01 23:00:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:00:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:00:08,923 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-01 23:00:09,031 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:00:09,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:00:09,281 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-01 23:00:09,281 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:00:09,431 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:00:09,431 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-01 23:00:09,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:00:09 BoogieIcfgContainer [2024-12-01 23:00:09,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:00:09,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:00:09,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:00:09,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:00:09,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:00:08" (1/3) ... [2024-12-01 23:00:09,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721002b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:00:09, skipping insertion in model container [2024-12-01 23:00:09,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:00:08" (2/3) ... [2024-12-01 23:00:09,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721002b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:00:09, skipping insertion in model container [2024-12-01 23:00:09,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:00:09" (3/3) ... [2024-12-01 23:00:09,439 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-12-01 23:00:09,450 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:00:09,451 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_24-sound_lock_racing.i that has 2 procedures, 51 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-12-01 23:00:09,452 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-01 23:00:09,491 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-01 23:00:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-12-01 23:00:09,556 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-12-01 23:00:09,558 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-01 23:00:09,561 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 219 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. [2024-12-01 23:00:09,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-12-01 23:00:09,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-12-01 23:00:09,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:00:09,582 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;@6c65877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:00:09,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-01 23:00:09,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-01 23:00:09,588 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-01 23:00:09,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-01 23:00:09,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:09,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-01 23:00:09,589 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)] === [2024-12-01 23:00:09,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 357485441, now seen corresponding path program 1 times [2024-12-01 23:00:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241123071] [2024-12-01 23:00:09,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:09,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241123071] [2024-12-01 23:00:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241123071] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:09,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:09,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006201459] [2024-12-01 23:00:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:09,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:09,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:09,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:09,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-12-01 23:00:09,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-01 23:00:09,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:09,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-12-01 23:00:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:10,106 INFO L124 PetriNetUnfolderBase]: 132/361 cut-off events. [2024-12-01 23:00:10,106 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-01 23:00:10,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 361 events. 132/361 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1724 event pairs, 20 based on Foata normal form. 76/410 useless extension candidates. Maximal degree in co-relation 630. Up to 255 conditions per place. [2024-12-01 23:00:10,130 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 46 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-12-01 23:00:10,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 249 flow [2024-12-01 23:00:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:00:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-01 23:00:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-12-01 23:00:10,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-12-01 23:00:10,143 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 164 transitions. [2024-12-01 23:00:10,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 249 flow [2024-12-01 23:00:10,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-01 23:00:10,150 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-12-01 23:00:10,152 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} [2024-12-01 23:00:10,155 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-12-01 23:00:10,155 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-12-01 23:00:10,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-01 23:00:10,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:10,156 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:00:10,156 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)] === [2024-12-01 23:00:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1669721400, now seen corresponding path program 1 times [2024-12-01 23:00:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975731650] [2024-12-01 23:00:10,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:00:10,186 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:00:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:00:10,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 23:00:10,221 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:00:10,222 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-01 23:00:10,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-01 23:00:10,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-01 23:00:10,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:00:10,226 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-01 23:00:10,229 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-01 23:00:10,229 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-01 23:00:10,249 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-01 23:00:10,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-12-01 23:00:10,265 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-12-01 23:00:10,265 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-01 23:00:10,266 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 10. Compared 506 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. [2024-12-01 23:00:10,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-12-01 23:00:10,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-12-01 23:00:10,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:00:10,270 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;@6c65877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:00:10,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-01 23:00:10,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-01 23:00:10,272 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-01 23:00:10,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-01 23:00:10,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:10,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-01 23:00:10,272 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)] === [2024-12-01 23:00:10,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash 446265597, now seen corresponding path program 1 times [2024-12-01 23:00:10,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:10,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905871642] [2024-12-01 23:00:10,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:10,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:10,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905871642] [2024-12-01 23:00:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905871642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:10,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498354320] [2024-12-01 23:00:10,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:10,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:10,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:10,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:10,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-12-01 23:00:10,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:00:10,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:10,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-12-01 23:00:10,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:11,495 INFO L124 PetriNetUnfolderBase]: 4028/8662 cut-off events. [2024-12-01 23:00:11,495 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-12-01 23:00:11,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15140 conditions, 8662 events. 4028/8662 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 72531 event pairs, 1892 based on Foata normal form. 1667/9455 useless extension candidates. Maximal degree in co-relation 1211. Up to 6374 conditions per place. [2024-12-01 23:00:11,542 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 64 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-12-01 23:00:11,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 104 transitions, 358 flow [2024-12-01 23:00:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:00:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-01 23:00:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-12-01 23:00:11,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-12-01 23:00:11,545 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 244 transitions. [2024-12-01 23:00:11,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 104 transitions, 358 flow [2024-12-01 23:00:11,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 104 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-01 23:00:11,548 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-12-01 23:00:11,548 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} [2024-12-01 23:00:11,549 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-12-01 23:00:11,549 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-12-01 23:00:11,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:00:11,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:11,549 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:11,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:00:11,550 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)] === [2024-12-01 23:00:11,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash 779993982, now seen corresponding path program 1 times [2024-12-01 23:00:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:11,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410247435] [2024-12-01 23:00:11,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:11,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:11,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410247435] [2024-12-01 23:00:11,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410247435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:11,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:11,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:00:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838483748] [2024-12-01 23:00:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:11,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:00:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:11,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:00:11,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:00:11,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-12-01 23:00:11,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-12-01 23:00:11,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:11,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-12-01 23:00:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:12,484 INFO L124 PetriNetUnfolderBase]: 3764/7353 cut-off events. [2024-12-01 23:00:12,484 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-12-01 23:00:12,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 7353 events. 3764/7353 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 57626 event pairs, 252 based on Foata normal form. 144/7010 useless extension candidates. Maximal degree in co-relation 1168. Up to 4012 conditions per place. [2024-12-01 23:00:12,519 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 104 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-12-01 23:00:12,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 548 flow [2024-12-01 23:00:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:00:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-01 23:00:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-12-01 23:00:12,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-12-01 23:00:12,522 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 6 states and 333 transitions. [2024-12-01 23:00:12,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 548 flow [2024-12-01 23:00:12,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-01 23:00:12,527 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 204 flow [2024-12-01 23:00:12,528 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} [2024-12-01 23:00:12,528 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2024-12-01 23:00:12,529 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 204 flow [2024-12-01 23:00:12,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-12-01 23:00:12,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:12,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:12,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:00:12,529 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)] === [2024-12-01 23:00:12,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash -470264293, now seen corresponding path program 1 times [2024-12-01 23:00:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354261078] [2024-12-01 23:00:12,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354261078] [2024-12-01 23:00:12,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354261078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:12,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:12,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:12,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952305133] [2024-12-01 23:00:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:12,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:12,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:12,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:12,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-12-01 23:00:12,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-12-01 23:00:12,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:12,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-12-01 23:00:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:13,594 INFO L124 PetriNetUnfolderBase]: 5385/11251 cut-off events. [2024-12-01 23:00:13,595 INFO L125 PetriNetUnfolderBase]: For 1334/1495 co-relation queries the response was YES. [2024-12-01 23:00:13,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20759 conditions, 11251 events. 5385/11251 cut-off events. For 1334/1495 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 96910 event pairs, 1446 based on Foata normal form. 209/10504 useless extension candidates. Maximal degree in co-relation 16761. Up to 5441 conditions per place. [2024-12-01 23:00:13,644 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 118 selfloop transitions, 12 changer transitions 0/168 dead transitions. [2024-12-01 23:00:13,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 694 flow [2024-12-01 23:00:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:00:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-01 23:00:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-12-01 23:00:13,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6903225806451613 [2024-12-01 23:00:13,646 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 204 flow. Second operand 5 states and 321 transitions. [2024-12-01 23:00:13,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 694 flow [2024-12-01 23:00:13,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 168 transitions, 671 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-01 23:00:13,652 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 286 flow [2024-12-01 23:00:13,652 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-12-01 23:00:13,653 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-12-01 23:00:13,653 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 286 flow [2024-12-01 23:00:13,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-12-01 23:00:13,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:13,654 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-01 23:00:13,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:00:13,654 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)] === [2024-12-01 23:00:13,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1589989838, now seen corresponding path program 1 times [2024-12-01 23:00:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:13,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526376757] [2024-12-01 23:00:13,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526376757] [2024-12-01 23:00:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526376757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:13,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:13,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:00:13,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885054398] [2024-12-01 23:00:13,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:13,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:13,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:13,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:13,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-12-01 23:00:13,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-12-01 23:00:13,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-12-01 23:00:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:14,639 INFO L124 PetriNetUnfolderBase]: 5241/10516 cut-off events. [2024-12-01 23:00:14,640 INFO L125 PetriNetUnfolderBase]: For 4161/4166 co-relation queries the response was YES. [2024-12-01 23:00:14,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22321 conditions, 10516 events. 5241/10516 cut-off events. For 4161/4166 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 87060 event pairs, 1595 based on Foata normal form. 160/10094 useless extension candidates. Maximal degree in co-relation 16985. Up to 7253 conditions per place. [2024-12-01 23:00:14,722 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 102 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-12-01 23:00:14,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 145 transitions, 672 flow [2024-12-01 23:00:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:00:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-01 23:00:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-12-01 23:00:14,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-12-01 23:00:14,724 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 286 flow. Second operand 4 states and 234 transitions. [2024-12-01 23:00:14,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 145 transitions, 672 flow [2024-12-01 23:00:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 668 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-01 23:00:14,734 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 298 flow [2024-12-01 23:00:14,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-12-01 23:00:14,735 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-12-01 23:00:14,735 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 298 flow [2024-12-01 23:00:14,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-12-01 23:00:14,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:14,735 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-01 23:00:14,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:00:14,736 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)] === [2024-12-01 23:00:14,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1028138631, now seen corresponding path program 1 times [2024-12-01 23:00:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457920358] [2024-12-01 23:00:14,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:00:14,753 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:00:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:00:14,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 23:00:14,768 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:00:14,768 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-12-01 23:00:14,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-12-01 23:00:14,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-12-01 23:00:14,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-12-01 23:00:14,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-12-01 23:00:14,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 23:00:14,770 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-01 23:00:14,770 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-01 23:00:14,771 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-01 23:00:14,798 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-01 23:00:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-12-01 23:00:14,813 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-12-01 23:00:14,813 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-01 23:00:14,813 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 11. Compared 923 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. [2024-12-01 23:00:14,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-12-01 23:00:14,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-12-01 23:00:14,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:00:14,816 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;@6c65877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:00:14,816 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-01 23:00:14,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-01 23:00:14,818 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-01 23:00:14,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-01 23:00:14,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:14,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-01 23:00:14,819 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)] === [2024-12-01 23:00:14,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:14,819 INFO L85 PathProgramCache]: Analyzing trace with hash 566537818, now seen corresponding path program 1 times [2024-12-01 23:00:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943545868] [2024-12-01 23:00:14,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:14,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943545868] [2024-12-01 23:00:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943545868] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:14,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483649389] [2024-12-01 23:00:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:14,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:14,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:14,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:14,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-12-01 23:00:14,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-12-01 23:00:14,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:14,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-12-01 23:00:14,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:23,346 INFO L124 PetriNetUnfolderBase]: 76325/138173 cut-off events. [2024-12-01 23:00:23,346 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-12-01 23:00:23,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245270 conditions, 138173 events. 76325/138173 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3139. Compared 1451585 event pairs, 49600 based on Foata normal form. 29480/155039 useless extension candidates. Maximal degree in co-relation 15960. Up to 105935 conditions per place. [2024-12-01 23:00:23,876 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 77 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-12-01 23:00:23,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 449 flow [2024-12-01 23:00:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:00:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-01 23:00:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-12-01 23:00:23,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329365079365079 [2024-12-01 23:00:23,877 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 319 transitions. [2024-12-01 23:00:23,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 449 flow [2024-12-01 23:00:23,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 131 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-01 23:00:23,880 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-12-01 23:00:23,881 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} [2024-12-01 23:00:23,881 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-12-01 23:00:23,882 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-12-01 23:00:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-12-01 23:00:23,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:23,882 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:23,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:00:23,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-01 23:00:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 15308190, now seen corresponding path program 1 times [2024-12-01 23:00:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928652973] [2024-12-01 23:00:23,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:23,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928652973] [2024-12-01 23:00:23,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928652973] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:23,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:23,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:00:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313892191] [2024-12-01 23:00:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:23,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:00:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:23,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:00:23,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:00:23,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-12-01 23:00:23,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-12-01 23:00:23,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:23,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-12-01 23:00:23,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:31,426 INFO L124 PetriNetUnfolderBase]: 71309/117066 cut-off events. [2024-12-01 23:00:31,426 INFO L125 PetriNetUnfolderBase]: For 8821/8821 co-relation queries the response was YES. [2024-12-01 23:00:31,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224827 conditions, 117066 events. 71309/117066 cut-off events. For 8821/8821 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 1102783 event pairs, 7896 based on Foata normal form. 1872/112091 useless extension candidates. Maximal degree in co-relation 18767. Up to 66277 conditions per place. [2024-12-01 23:00:31,911 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 139 selfloop transitions, 6 changer transitions 0/196 dead transitions. [2024-12-01 23:00:31,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 196 transitions, 727 flow [2024-12-01 23:00:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:00:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-01 23:00:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2024-12-01 23:00:31,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-12-01 23:00:31,914 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 6 states and 452 transitions. [2024-12-01 23:00:31,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 196 transitions, 727 flow [2024-12-01 23:00:31,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 196 transitions, 725 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-01 23:00:31,920 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 269 flow [2024-12-01 23:00:31,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-12-01 23:00:31,920 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 8 predicate places. [2024-12-01 23:00:31,921 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 269 flow [2024-12-01 23:00:31,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-12-01 23:00:31,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:31,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:31,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:00:31,921 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-01 23:00:31,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash -210152230, now seen corresponding path program 1 times [2024-12-01 23:00:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921558160] [2024-12-01 23:00:31,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:31,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921558160] [2024-12-01 23:00:31,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921558160] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:31,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:31,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905136344] [2024-12-01 23:00:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:31,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:31,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:31,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:31,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2024-12-01 23:00:31,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2024-12-01 23:00:31,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:31,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2024-12-01 23:00:31,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:44,163 INFO L124 PetriNetUnfolderBase]: 111387/192531 cut-off events. [2024-12-01 23:00:44,163 INFO L125 PetriNetUnfolderBase]: For 16294/18542 co-relation queries the response was YES. [2024-12-01 23:00:44,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359101 conditions, 192531 events. 111387/192531 cut-off events. For 16294/18542 co-relation queries the response was YES. Maximal size of possible extension queue 4534. Compared 2001225 event pairs, 38008 based on Foata normal form. 2837/180494 useless extension candidates. Maximal degree in co-relation 243509. Up to 101431 conditions per place. [2024-12-01 23:00:44,946 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 170 selfloop transitions, 16 changer transitions 0/238 dead transitions. [2024-12-01 23:00:44,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 238 transitions, 987 flow [2024-12-01 23:00:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:00:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-01 23:00:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2024-12-01 23:00:44,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-12-01 23:00:44,948 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 269 flow. Second operand 5 states and 447 transitions. [2024-12-01 23:00:44,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 238 transitions, 987 flow [2024-12-01 23:00:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 238 transitions, 964 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-01 23:00:44,959 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 385 flow [2024-12-01 23:00:44,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-12-01 23:00:44,960 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2024-12-01 23:00:44,960 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 385 flow [2024-12-01 23:00:44,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2024-12-01 23:00:44,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:44,960 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-01 23:00:44,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:00:44,961 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)] === [2024-12-01 23:00:44,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 474554512, now seen corresponding path program 1 times [2024-12-01 23:00:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365378558] [2024-12-01 23:00:44,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365378558] [2024-12-01 23:00:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365378558] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:45,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:45,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:00:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763402790] [2024-12-01 23:00:45,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:45,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:45,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:45,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:45,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-12-01 23:00:45,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-12-01 23:00:45,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:45,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-12-01 23:00:45,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:00:57,806 INFO L124 PetriNetUnfolderBase]: 109709/185013 cut-off events. [2024-12-01 23:00:57,806 INFO L125 PetriNetUnfolderBase]: For 76740/76767 co-relation queries the response was YES. [2024-12-01 23:00:58,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399859 conditions, 185013 events. 109709/185013 cut-off events. For 76740/76767 co-relation queries the response was YES. Maximal size of possible extension queue 4385. Compared 1868166 event pairs, 32155 based on Foata normal form. 2136/176762 useless extension candidates. Maximal degree in co-relation 229389. Up to 132223 conditions per place. [2024-12-01 23:00:58,807 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 145 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2024-12-01 23:00:58,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 202 transitions, 945 flow [2024-12-01 23:00:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:00:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-01 23:00:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2024-12-01 23:00:58,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6448412698412699 [2024-12-01 23:00:58,809 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 385 flow. Second operand 4 states and 325 transitions. [2024-12-01 23:00:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 202 transitions, 945 flow [2024-12-01 23:00:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 202 transitions, 941 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-01 23:00:58,893 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 397 flow [2024-12-01 23:00:58,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2024-12-01 23:00:58,894 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 14 predicate places. [2024-12-01 23:00:58,894 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 397 flow [2024-12-01 23:00:58,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-12-01 23:00:58,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:00:58,894 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:58,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 23:00:58,894 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)] === [2024-12-01 23:00:58,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1363195672, now seen corresponding path program 1 times [2024-12-01 23:00:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030696282] [2024-12-01 23:00:58,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:00:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030696282] [2024-12-01 23:00:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030696282] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:58,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:00:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291864590] [2024-12-01 23:00:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:58,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:00:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:58,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:00:58,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:00:58,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2024-12-01 23:00:58,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-12-01 23:00:58,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:00:58,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2024-12-01 23:00:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:01:13,864 INFO L124 PetriNetUnfolderBase]: 124627/216705 cut-off events. [2024-12-01 23:01:13,865 INFO L125 PetriNetUnfolderBase]: For 103320/103960 co-relation queries the response was YES. [2024-12-01 23:01:14,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465938 conditions, 216705 events. 124627/216705 cut-off events. For 103320/103960 co-relation queries the response was YES. Maximal size of possible extension queue 5236. Compared 2303479 event pairs, 43062 based on Foata normal form. 6432/209090 useless extension candidates. Maximal degree in co-relation 280550. Up to 114922 conditions per place. [2024-12-01 23:01:15,001 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 171 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-12-01 23:01:15,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 249 transitions, 1200 flow [2024-12-01 23:01:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:01:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-01 23:01:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2024-12-01 23:01:15,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.707936507936508 [2024-12-01 23:01:15,003 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 397 flow. Second operand 5 states and 446 transitions. [2024-12-01 23:01:15,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 249 transitions, 1200 flow [2024-12-01 23:01:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 249 transitions, 1185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-01 23:01:15,073 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 566 flow [2024-12-01 23:01:15,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-12-01 23:01:15,074 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 19 predicate places. [2024-12-01 23:01:15,074 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 566 flow [2024-12-01 23:01:15,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-12-01 23:01:15,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:01:15,074 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:15,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 23:01:15,074 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)] === [2024-12-01 23:01:15,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1251263228, now seen corresponding path program 1 times [2024-12-01 23:01:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291603796] [2024-12-01 23:01:15,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:01:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291603796] [2024-12-01 23:01:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291603796] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:01:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:01:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:01:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206367123] [2024-12-01 23:01:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:01:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:01:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:15,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:01:15,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:01:15,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2024-12-01 23:01:15,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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) [2024-12-01 23:01:15,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:01:15,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2024-12-01 23:01:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-01 23:01:35,373 INFO L124 PetriNetUnfolderBase]: 166246/281359 cut-off events. [2024-12-01 23:01:35,373 INFO L125 PetriNetUnfolderBase]: For 214394/218848 co-relation queries the response was YES. [2024-12-01 23:01:35,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652688 conditions, 281359 events. 166246/281359 cut-off events. For 214394/218848 co-relation queries the response was YES. Maximal size of possible extension queue 6865. Compared 2990331 event pairs, 37750 based on Foata normal form. 6482/272225 useless extension candidates. Maximal degree in co-relation 485760. Up to 115935 conditions per place. [2024-12-01 23:01:36,781 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 311 selfloop transitions, 52 changer transitions 0/412 dead transitions. [2024-12-01 23:01:36,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 412 transitions, 2216 flow [2024-12-01 23:01:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 23:01:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-01 23:01:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 792 transitions. [2024-12-01 23:01:36,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-12-01 23:01:36,783 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 566 flow. Second operand 9 states and 792 transitions. [2024-12-01 23:01:36,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 412 transitions, 2216 flow [2024-12-01 23:01:37,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 412 transitions, 2216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-01 23:01:37,723 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 963 flow [2024-12-01 23:01:37,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=963, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2024-12-01 23:01:37,724 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 33 predicate places. [2024-12-01 23:01:37,724 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 963 flow [2024-12-01 23:01:37,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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) [2024-12-01 23:01:37,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:01:37,724 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-12-01 23:01:37,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 23:01:37,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-01 23:01:37,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -843856601, now seen corresponding path program 1 times [2024-12-01 23:01:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633868634] [2024-12-01 23:01:37,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:01:37,744 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:01:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:01:37,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 23:01:37,762 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:01:37,762 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-12-01 23:01:37,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-12-01 23:01:37,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-12-01 23:01:37,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-12-01 23:01:37,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-12-01 23:01:37,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-12-01 23:01:37,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-12-01 23:01:37,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 23:01:37,764 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:37,765 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-01 23:01:37,765 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-01 23:01:37,796 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-01 23:01:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 159 transitions, 358 flow [2024-12-01 23:01:37,845 INFO L124 PetriNetUnfolderBase]: 55/354 cut-off events. [2024-12-01 23:01:37,845 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-01 23:01:37,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 354 events. 55/354 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1582 event pairs, 6 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 256. Up to 32 conditions per place. [2024-12-01 23:01:37,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 159 transitions, 358 flow [2024-12-01 23:01:37,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 159 transitions, 358 flow [2024-12-01 23:01:37,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:01:37,853 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;@6c65877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:01:37,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-12-01 23:01:37,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-01 23:01:37,856 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-01 23:01:37,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-01 23:01:37,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-01 23:01:37,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-01 23:01:37,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-12-01 23:01:37,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 718302104, now seen corresponding path program 1 times [2024-12-01 23:01:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:37,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080965586] [2024-12-01 23:01:37,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:01:37,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:37,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080965586] [2024-12-01 23:01:37,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080965586] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:01:37,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:01:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:01:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392715836] [2024-12-01 23:01:37,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:01:37,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:01:37,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:37,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:01:37,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:01:37,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 159 [2024-12-01 23:01:37,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 159 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-12-01 23:01:37,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-01 23:01:37,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 159 [2024-12-01 23:01:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand