./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/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_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/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_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:35:33,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:35:33,063 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 11:35:33,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:35:33,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:35:33,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:35:33,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:35:33,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:35:33,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:35:33,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:35:33,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:35:33,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:35:33,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:35:33,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:35:33,094 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:35:33,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:35:33,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:35:33,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:35:33,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:35:33,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:35:33,095 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:33,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:35:33,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:33,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:35:33,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:35:33,097 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_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/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 -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-12-02 11:35:33,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:35:33,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:35:33,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:35:33,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:35:33,348 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:35:33,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-12-02 11:35:36,030 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/data/195994e74/a23b0e9b6635402b8224228ac5ff5d8e/FLAG3f21babed [2024-12-02 11:35:36,260 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:35:36,261 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-12-02 11:35:36,274 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/data/195994e74/a23b0e9b6635402b8224228ac5ff5d8e/FLAG3f21babed [2024-12-02 11:35:36,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/data/195994e74/a23b0e9b6635402b8224228ac5ff5d8e [2024-12-02 11:35:36,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:35:36,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:35:36,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:35:36,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:35:36,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:35:36,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca97ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36, skipping insertion in model container [2024-12-02 11:35:36,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:35:36,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:35:36,638 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:35:36,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:35:36,716 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:35:36,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36 WrapperNode [2024-12-02 11:35:36,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:35:36,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:35:36,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:35:36,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:35:36,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,753 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 154 [2024-12-02 11:35:36,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:35:36,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:35:36,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:35:36,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:35:36,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,777 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-12-02 11:35:36,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,786 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:35:36,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:35:36,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:35:36,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:35:36,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (1/1) ... [2024-12-02 11:35:36,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:36,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:35:36,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:35:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34068cc4-9ce5-4e60-a641-e8b4852f2dc9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:35:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:35:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:35:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 11:35:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:35:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 11:35:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:35:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:35:36,854 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 11:35:36,972 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:35:36,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:35:37,285 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:35:37,285 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:35:37,489 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:35:37,489 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-12-02 11:35:37,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:35:37 BoogieIcfgContainer [2024-12-02 11:35:37,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:35:37,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:35:37,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:35:37,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:35:37,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:35:36" (1/3) ... [2024-12-02 11:35:37,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2404524a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:35:37, skipping insertion in model container [2024-12-02 11:35:37,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:36" (2/3) ... [2024-12-02 11:35:37,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2404524a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:35:37, skipping insertion in model container [2024-12-02 11:35:37,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:35:37" (3/3) ... [2024-12-02 11:35:37,500 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-12-02 11:35:37,515 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:35:37,517 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_42-trylock2_racefree.i that has 2 procedures, 98 locations, 1 initial locations, 13 loop locations, and 12 error locations. [2024-12-02 11:35:37,517 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:35:37,566 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 11:35:37,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 121 transitions, 249 flow [2024-12-02 11:35:37,666 INFO L124 PetriNetUnfolderBase]: 33/167 cut-off events. [2024-12-02 11:35:37,668 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:35:37,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 33/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 683 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-12-02 11:35:37,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 121 transitions, 249 flow [2024-12-02 11:35:37,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 120 transitions, 247 flow [2024-12-02 11:35:37,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:35:37,696 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;@3e4a307c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:35:37,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-02 11:35:37,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:35:37,702 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 11:35:37,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:35:37,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:37,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 11:35:37,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 11:35:37,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 637743207, now seen corresponding path program 1 times [2024-12-02 11:35:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554782061] [2024-12-02 11:35:37,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554782061] [2024-12-02 11:35:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554782061] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:35:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645418378] [2024-12-02 11:35:37,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:37,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:35:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:37,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:35:37,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:37,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 121 [2024-12-02 11:35:37,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:37,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:35:37,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 121 [2024-12-02 11:35:37,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:35:38,482 INFO L124 PetriNetUnfolderBase]: 589/1526 cut-off events. [2024-12-02 11:35:38,482 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:35:38,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1526 events. 589/1526 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9525 event pairs, 0 based on Foata normal form. 334/1789 useless extension candidates. Maximal degree in co-relation 2678. Up to 1120 conditions per place. [2024-12-02 11:35:38,493 INFO L140 encePairwiseOnDemand]: 94/121 looper letters, 91 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2024-12-02 11:35:38,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 140 transitions, 475 flow [2024-12-02 11:35:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:35:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:35:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2024-12-02 11:35:38,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6735537190082644 [2024-12-02 11:35:38,509 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 247 flow. Second operand 4 states and 326 transitions. [2024-12-02 11:35:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 140 transitions, 475 flow [2024-12-02 11:35:38,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 11:35:38,519 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 211 flow [2024-12-02 11:35:38,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-12-02 11:35:38,525 INFO L279 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-12-02 11:35:38,525 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 211 flow [2024-12-02 11:35:38,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:38,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:38,526 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 11:35:38,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:35:38,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 11:35:38,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1926740530, now seen corresponding path program 1 times [2024-12-02 11:35:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506019016] [2024-12-02 11:35:38,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:35:38,553 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:35:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:35:38,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:35:38,585 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:35:38,587 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-12-02 11:35:38,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-12-02 11:35:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-12-02 11:35:38,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-12-02 11:35:38,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:35:38,591 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 11:35:38,593 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 11:35:38,593 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 11:35:38,626 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 11:35:38,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 184 transitions, 384 flow [2024-12-02 11:35:38,676 INFO L124 PetriNetUnfolderBase]: 57/295 cut-off events. [2024-12-02 11:35:38,676 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 11:35:38,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 57/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1417 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 182. Up to 9 conditions per place. [2024-12-02 11:35:38,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 184 transitions, 384 flow [2024-12-02 11:35:38,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 184 transitions, 384 flow [2024-12-02 11:35:38,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:35:38,683 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;@3e4a307c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:35:38,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-12-02 11:35:38,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:35:38,685 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 11:35:38,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:35:38,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:38,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 11:35:38,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-12-02 11:35:38,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash 813393948, now seen corresponding path program 1 times [2024-12-02 11:35:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:38,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207967099] [2024-12-02 11:35:38,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:38,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:38,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207967099] [2024-12-02 11:35:38,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207967099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:38,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:38,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:35:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249429781] [2024-12-02 11:35:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:38,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:35:38,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:38,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:35:38,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:38,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-12-02 11:35:38,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:38,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:35:38,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-12-02 11:35:38,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:35:44,150 INFO L124 PetriNetUnfolderBase]: 28423/59920 cut-off events. [2024-12-02 11:35:44,150 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-12-02 11:35:44,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103661 conditions, 59920 events. 28423/59920 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 611182 event pairs, 21714 based on Foata normal form. 12694/67777 useless extension candidates. Maximal degree in co-relation 45518. Up to 43557 conditions per place. [2024-12-02 11:35:44,394 INFO L140 encePairwiseOnDemand]: 145/184 looper letters, 119 selfloop transitions, 3 changer transitions 0/196 dead transitions. [2024-12-02 11:35:44,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 196 transitions, 652 flow [2024-12-02 11:35:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:35:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:35:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2024-12-02 11:35:44,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2024-12-02 11:35:44,398 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 384 flow. Second operand 4 states and 478 transitions. [2024-12-02 11:35:44,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 196 transitions, 652 flow [2024-12-02 11:35:44,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 196 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 11:35:44,405 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 342 flow [2024-12-02 11:35:44,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-12-02 11:35:44,406 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2024-12-02 11:35:44,406 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 342 flow [2024-12-02 11:35:44,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:44,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:44,406 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 11:35:44,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:35:44,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-12-02 11:35:44,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1097471004, now seen corresponding path program 1 times [2024-12-02 11:35:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928119759] [2024-12-02 11:35:44,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:44,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:44,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928119759] [2024-12-02 11:35:44,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928119759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:44,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:44,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:35:44,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101791470] [2024-12-02 11:35:44,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:44,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:35:44,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:44,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:35:44,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:35:44,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-12-02 11:35:44,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:44,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:35:44,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-12-02 11:35:44,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:35:48,266 INFO L124 PetriNetUnfolderBase]: 27535/50370 cut-off events. [2024-12-02 11:35:48,266 INFO L125 PetriNetUnfolderBase]: For 1584/1584 co-relation queries the response was YES. [2024-12-02 11:35:48,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94335 conditions, 50370 events. 27535/50370 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 464231 event pairs, 924 based on Foata normal form. 484/48862 useless extension candidates. Maximal degree in co-relation 4315. Up to 35067 conditions per place. [2024-12-02 11:35:48,437 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 199 selfloop transitions, 6 changer transitions 0/279 dead transitions. [2024-12-02 11:35:48,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 279 transitions, 1002 flow [2024-12-02 11:35:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:35:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 11:35:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 650 transitions. [2024-12-02 11:35:48,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5887681159420289 [2024-12-02 11:35:48,440 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 342 flow. Second operand 6 states and 650 transitions. [2024-12-02 11:35:48,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 279 transitions, 1002 flow [2024-12-02 11:35:48,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 279 transitions, 1000 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:35:48,450 INFO L231 Difference]: Finished difference. Result has 161 places, 152 transitions, 348 flow [2024-12-02 11:35:48,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=161, PETRI_TRANSITIONS=152} [2024-12-02 11:35:48,452 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 8 predicate places. [2024-12-02 11:35:48,452 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 152 transitions, 348 flow [2024-12-02 11:35:48,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:48,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:48,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:35:48,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:35:48,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-12-02 11:35:48,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1411646067, now seen corresponding path program 1 times [2024-12-02 11:35:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745856138] [2024-12-02 11:35:48,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745856138] [2024-12-02 11:35:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745856138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:35:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350533257] [2024-12-02 11:35:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:48,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:35:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:48,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:35:48,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:48,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2024-12-02 11:35:48,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 152 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:35:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2024-12-02 11:35:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:35:55,418 INFO L124 PetriNetUnfolderBase]: 49861/100490 cut-off events. [2024-12-02 11:35:55,419 INFO L125 PetriNetUnfolderBase]: For 4054/4585 co-relation queries the response was YES. [2024-12-02 11:35:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178988 conditions, 100490 events. 49861/100490 cut-off events. For 4054/4585 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 1078553 event pairs, 12342 based on Foata normal form. 1004/95060 useless extension candidates. Maximal degree in co-relation 160190. Up to 42027 conditions per place. [2024-12-02 11:35:55,854 INFO L140 encePairwiseOnDemand]: 173/184 looper letters, 234 selfloop transitions, 16 changer transitions 0/325 dead transitions. [2024-12-02 11:35:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 325 transitions, 1248 flow [2024-12-02 11:35:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:35:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 11:35:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2024-12-02 11:35:55,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6804347826086956 [2024-12-02 11:35:55,856 INFO L175 Difference]: Start difference. First operand has 161 places, 152 transitions, 348 flow. Second operand 5 states and 626 transitions. [2024-12-02 11:35:55,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 325 transitions, 1248 flow [2024-12-02 11:35:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 325 transitions, 1225 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-02 11:35:55,871 INFO L231 Difference]: Finished difference. Result has 165 places, 167 transitions, 462 flow [2024-12-02 11:35:55,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=165, PETRI_TRANSITIONS=167} [2024-12-02 11:35:55,872 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2024-12-02 11:35:55,872 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 167 transitions, 462 flow [2024-12-02 11:35:55,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:55,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:35:55,873 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 11:35:55,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:35:55,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-12-02 11:35:55,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash 338138130, now seen corresponding path program 1 times [2024-12-02 11:35:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929071044] [2024-12-02 11:35:55,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:55,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929071044] [2024-12-02 11:35:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929071044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:55,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:55,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:35:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733290028] [2024-12-02 11:35:55,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:55,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:35:55,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:55,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:35:55,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:55,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-12-02 11:35:55,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 167 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:35:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:35:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-12-02 11:35:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:36:03,321 INFO L124 PetriNetUnfolderBase]: 48065/97546 cut-off events. [2024-12-02 11:36:03,322 INFO L125 PetriNetUnfolderBase]: For 21659/21687 co-relation queries the response was YES. [2024-12-02 11:36:03,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189610 conditions, 97546 events. 48065/97546 cut-off events. For 21659/21687 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 1046424 event pairs, 16099 based on Foata normal form. 512/92752 useless extension candidates. Maximal degree in co-relation 145826. Up to 69961 conditions per place. [2024-12-02 11:36:03,753 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 181 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2024-12-02 11:36:03,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 261 transitions, 1086 flow [2024-12-02 11:36:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:36:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:36:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2024-12-02 11:36:03,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6209239130434783 [2024-12-02 11:36:03,755 INFO L175 Difference]: Start difference. First operand has 165 places, 167 transitions, 462 flow. Second operand 4 states and 457 transitions. [2024-12-02 11:36:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 261 transitions, 1086 flow [2024-12-02 11:36:03,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 261 transitions, 1082 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 11:36:03,789 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 474 flow [2024-12-02 11:36:03,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-12-02 11:36:03,790 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 14 predicate places. [2024-12-02 11:36:03,790 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 474 flow [2024-12-02 11:36:03,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:36:03,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:36:03,790 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-02 11:36:03,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:36:03,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-12-02 11:36:03,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:36:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1466743002, now seen corresponding path program 1 times [2024-12-02 11:36:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:36:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782475462] [2024-12-02 11:36:03,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:36:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:36:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:36:03,811 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:36:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:36:03,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:36:03,830 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-12-02 11:36:03,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-12-02 11:36:03,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-12-02 11:36:03,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-12-02 11:36:03,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:36:03,833 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 11:36:03,834 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 11:36:03,834 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 11:36:03,880 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 11:36:03,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 247 transitions, 521 flow [2024-12-02 11:36:03,927 INFO L124 PetriNetUnfolderBase]: 84/442 cut-off events. [2024-12-02 11:36:03,927 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 11:36:03,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 442 events. 84/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2263 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2024-12-02 11:36:03,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 247 transitions, 521 flow [2024-12-02 11:36:03,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 247 transitions, 521 flow [2024-12-02 11:36:03,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:36:03,937 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;@3e4a307c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:36:03,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-12-02 11:36:03,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:36:03,939 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 11:36:03,939 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:36:03,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:36:03,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 11:36:03,940 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-12-02 11:36:03,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:36:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1049165904, now seen corresponding path program 1 times [2024-12-02 11:36:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:36:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818546831] [2024-12-02 11:36:03,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:36:03,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:36:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:36:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:36:03,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:36:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818546831] [2024-12-02 11:36:03,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818546831] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:36:03,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:36:03,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:36:03,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448708519] [2024-12-02 11:36:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:36:03,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:36:03,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:36:03,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:36:03,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:36:03,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 247 [2024-12-02 11:36:03,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 247 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:36:03,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:36:03,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 247 [2024-12-02 11:36:03,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand