./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/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_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/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_eac832a5-c28e-491c-ad49-58ad1b262592/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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:05:01,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:05:01,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:05:01,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:05:01,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:05:01,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:05:01,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:05:01,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:05:01,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:05:01,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:05:01,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:05:01,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:05:01,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:05:01,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:05:01,269 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:05:01,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:05:01,270 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:05:01,271 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:05:01,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:05:01,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:05:01,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:05:01,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:05:01,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:05:01,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:05:01,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:05:01,273 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_eac832a5-c28e-491c-ad49-58ad1b262592/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 -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-12-02 12:05:01,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:05:01,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:05:01,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:05:01,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:05:01,528 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:05:01,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-12-02 12:05:04,174 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/data/957bcc82a/d00c1ba0f96a4deb977ba0444265d191/FLAG7588e47ed [2024-12-02 12:05:04,440 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:05:04,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-12-02 12:05:04,455 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/data/957bcc82a/d00c1ba0f96a4deb977ba0444265d191/FLAG7588e47ed [2024-12-02 12:05:04,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/data/957bcc82a/d00c1ba0f96a4deb977ba0444265d191 [2024-12-02 12:05:04,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:05:04,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:05:04,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:05:04,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:05:04,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:05:04,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:05:04" (1/1) ... [2024-12-02 12:05:04,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28dbec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:04, skipping insertion in model container [2024-12-02 12:05:04,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:05:04" (1/1) ... [2024-12-02 12:05:04,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:05:05,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:05:05,052 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:05:05,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:05:05,127 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:05:05,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05 WrapperNode [2024-12-02 12:05:05,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:05:05,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:05:05,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:05:05,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:05:05,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,165 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-12-02 12:05:05,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:05:05,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:05:05,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:05:05,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:05:05,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,190 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-12-02 12:05:05,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,198 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:05:05,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:05:05,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:05:05,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:05:05,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (1/1) ... [2024-12-02 12:05:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:05:05,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:05:05,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:05:05,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac832a5-c28e-491c-ad49-58ad1b262592/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:05:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:05:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:05:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 12:05:05,266 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 12:05:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:05:05,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:05:05,269 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 12:05:05,383 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:05:05,384 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:05:05,629 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:05:05,629 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:05:05,774 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:05:05,774 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 12:05:05,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:05:05 BoogieIcfgContainer [2024-12-02 12:05:05,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:05:05,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:05:05,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:05:05,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:05:05,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:05:04" (1/3) ... [2024-12-02 12:05:05,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490305b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:05:05, skipping insertion in model container [2024-12-02 12:05:05,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:05" (2/3) ... [2024-12-02 12:05:05,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490305b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:05:05, skipping insertion in model container [2024-12-02 12:05:05,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:05:05" (3/3) ... [2024-12-02 12:05:05,786 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-12-02 12:05:05,804 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:05:05,805 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_05-lockfuns_racefree.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-12-02 12:05:05,806 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:05:05,856 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 12:05:05,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 62 transitions, 131 flow [2024-12-02 12:05:05,951 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2024-12-02 12:05:05,954 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:05:05,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 11/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 232 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-12-02 12:05:05,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 62 transitions, 131 flow [2024-12-02 12:05:05,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 129 flow [2024-12-02 12:05:05,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:05:05,983 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;@7b77916b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:05:05,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-02 12:05:05,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:05:05,989 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 12:05:05,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:05:05,989 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:05,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:05:05,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:05:05,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash 343946397, now seen corresponding path program 1 times [2024-12-02 12:05:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489327650] [2024-12-02 12:05:06,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:06,223 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 12:05:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489327650] [2024-12-02 12:05:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489327650] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:06,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492824773] [2024-12-02 12:05:06,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:06,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:06,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:06,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:06,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-12-02 12:05:06,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:06,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:06,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-12-02 12:05:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:06,513 INFO L124 PetriNetUnfolderBase]: 182/508 cut-off events. [2024-12-02 12:05:06,513 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:05:06,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 508 events. 182/508 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2517 event pairs, 26 based on Foata normal form. 88/540 useless extension candidates. Maximal degree in co-relation 877. Up to 282 conditions per place. [2024-12-02 12:05:06,517 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 52 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-12-02 12:05:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 275 flow [2024-12-02 12:05:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-12-02 12:05:06,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6653225806451613 [2024-12-02 12:05:06,531 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 129 flow. Second operand 4 states and 165 transitions. [2024-12-02 12:05:06,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 275 flow [2024-12-02 12:05:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:05:06,539 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 119 flow [2024-12-02 12:05:06,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-12-02 12:05:06,543 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-12-02 12:05:06,543 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 119 flow [2024-12-02 12:05:06,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:06,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:06,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:05:06,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:05:06,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:05:06,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2072404067, now seen corresponding path program 1 times [2024-12-02 12:05:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378094681] [2024-12-02 12:05:06,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:06,632 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 12:05:06,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378094681] [2024-12-02 12:05:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378094681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:06,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074052033] [2024-12-02 12:05:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:06,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:06,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:06,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:06,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-12-02 12:05:06,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:06,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:06,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-12-02 12:05:06,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:06,826 INFO L124 PetriNetUnfolderBase]: 169/449 cut-off events. [2024-12-02 12:05:06,826 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 12:05:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 449 events. 169/449 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2133 event pairs, 22 based on Foata normal form. 15/444 useless extension candidates. Maximal degree in co-relation 834. Up to 326 conditions per place. [2024-12-02 12:05:06,830 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 53 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-12-02 12:05:06,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 283 flow [2024-12-02 12:05:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-12-02 12:05:06,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-12-02 12:05:06,832 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 119 flow. Second operand 4 states and 146 transitions. [2024-12-02 12:05:06,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 283 flow [2024-12-02 12:05:06,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:05:06,836 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2024-12-02 12:05:06,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-12-02 12:05:06,836 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-12-02 12:05:06,837 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2024-12-02 12:05:06,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:06,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:06,837 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 12:05:06,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:05:06,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:05:06,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1284505985, now seen corresponding path program 1 times [2024-12-02 12:05:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:06,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313007733] [2024-12-02 12:05:06,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:06,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:05:06,875 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:05:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:05:06,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 12:05:06,906 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:05:06,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-12-02 12:05:06,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-02 12:05:06,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-02 12:05:06,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-02 12:05:06,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:05:06,910 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 12:05:06,913 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 12:05:06,913 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 12:05:06,936 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 12:05:06,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 96 transitions, 208 flow [2024-12-02 12:05:06,950 INFO L124 PetriNetUnfolderBase]: 21/147 cut-off events. [2024-12-02 12:05:06,950 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 12:05:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 21/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-12-02 12:05:06,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 96 transitions, 208 flow [2024-12-02 12:05:06,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 96 transitions, 208 flow [2024-12-02 12:05:06,954 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:05:06,955 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;@7b77916b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:05:06,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-02 12:05:06,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:05:06,957 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 12:05:06,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:05:06,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:06,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:05:06,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 12:05:06,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash 435590429, now seen corresponding path program 1 times [2024-12-02 12:05:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766391090] [2024-12-02 12:05:06,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:07,012 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 12:05:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766391090] [2024-12-02 12:05:07,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766391090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:07,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591139548] [2024-12-02 12:05:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:07,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:07,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:07,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:07,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-12-02 12:05:07,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:07,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:07,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-12-02 12:05:07,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:08,110 INFO L124 PetriNetUnfolderBase]: 5541/10437 cut-off events. [2024-12-02 12:05:08,111 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-12-02 12:05:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 10437 events. 5541/10437 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 80469 event pairs, 936 based on Foata normal form. 2148/11665 useless extension candidates. Maximal degree in co-relation 12950. Up to 6033 conditions per place. [2024-12-02 12:05:08,163 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 94 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-12-02 12:05:08,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 478 flow [2024-12-02 12:05:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-12-02 12:05:08,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-12-02 12:05:08,167 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 208 flow. Second operand 4 states and 277 transitions. [2024-12-02 12:05:08,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 478 flow [2024-12-02 12:05:08,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:05:08,171 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 186 flow [2024-12-02 12:05:08,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-12-02 12:05:08,172 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2024-12-02 12:05:08,172 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 186 flow [2024-12-02 12:05:08,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:08,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:08,172 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:05:08,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:05:08,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 12:05:08,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 618401859, now seen corresponding path program 1 times [2024-12-02 12:05:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900249019] [2024-12-02 12:05:08,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:08,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:08,230 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 12:05:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900249019] [2024-12-02 12:05:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900249019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840850541] [2024-12-02 12:05:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:08,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:08,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:08,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:08,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-12-02 12:05:08,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-12-02 12:05:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:09,206 INFO L124 PetriNetUnfolderBase]: 5527/11628 cut-off events. [2024-12-02 12:05:09,206 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2024-12-02 12:05:09,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 11628 events. 5527/11628 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 96992 event pairs, 2600 based on Foata normal form. 15/10932 useless extension candidates. Maximal degree in co-relation 1450. Up to 8697 conditions per place. [2024-12-02 12:05:09,256 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 72 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-12-02 12:05:09,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 398 flow [2024-12-02 12:05:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-12-02 12:05:09,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-12-02 12:05:09,258 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 186 flow. Second operand 4 states and 217 transitions. [2024-12-02 12:05:09,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 398 flow [2024-12-02 12:05:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:05:09,263 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 200 flow [2024-12-02 12:05:09,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-12-02 12:05:09,264 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-12-02 12:05:09,264 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 200 flow [2024-12-02 12:05:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:09,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:09,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:05:09,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:05:09,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 12:05:09,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1945075980, now seen corresponding path program 1 times [2024-12-02 12:05:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391707792] [2024-12-02 12:05:09,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:09,332 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 12:05:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391707792] [2024-12-02 12:05:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391707792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:09,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917291132] [2024-12-02 12:05:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:09,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:09,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:09,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:09,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-12-02 12:05:09,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:09,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:09,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-12-02 12:05:09,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:10,870 INFO L124 PetriNetUnfolderBase]: 7335/15582 cut-off events. [2024-12-02 12:05:10,870 INFO L125 PetriNetUnfolderBase]: For 578/793 co-relation queries the response was YES. [2024-12-02 12:05:10,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 15582 events. 7335/15582 cut-off events. For 578/793 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 138144 event pairs, 2168 based on Foata normal form. 260/14668 useless extension candidates. Maximal degree in co-relation 27802. Up to 7118 conditions per place. [2024-12-02 12:05:10,964 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 132 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-12-02 12:05:10,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 722 flow [2024-12-02 12:05:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:05:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:05:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2024-12-02 12:05:10,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-12-02 12:05:10,966 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 200 flow. Second operand 5 states and 325 transitions. [2024-12-02 12:05:10,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 722 flow [2024-12-02 12:05:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:05:10,973 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 292 flow [2024-12-02 12:05:10,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-12-02 12:05:10,974 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-12-02 12:05:10,974 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 292 flow [2024-12-02 12:05:10,974 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) [2024-12-02 12:05:10,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:10,974 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 12:05:10,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:05:10,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 12:05:10,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1569223272, now seen corresponding path program 1 times [2024-12-02 12:05:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:10,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481244453] [2024-12-02 12:05:10,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:11,043 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 12:05:11,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481244453] [2024-12-02 12:05:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481244453] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:11,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:11,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:05:11,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380447234] [2024-12-02 12:05:11,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:11,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:11,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:11,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:11,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:11,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-12-02 12:05:11,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:11,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:11,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-12-02 12:05:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:12,147 INFO L124 PetriNetUnfolderBase]: 7271/14435 cut-off events. [2024-12-02 12:05:12,147 INFO L125 PetriNetUnfolderBase]: For 4403/4408 co-relation queries the response was YES. [2024-12-02 12:05:12,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30126 conditions, 14435 events. 7271/14435 cut-off events. For 4403/4408 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 121443 event pairs, 2329 based on Foata normal form. 0/13612 useless extension candidates. Maximal degree in co-relation 20352. Up to 10013 conditions per place. [2024-12-02 12:05:12,192 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 115 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-12-02 12:05:12,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 720 flow [2024-12-02 12:05:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-12-02 12:05:12,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-12-02 12:05:12,194 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 292 flow. Second operand 4 states and 239 transitions. [2024-12-02 12:05:12,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 720 flow [2024-12-02 12:05:12,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:05:12,205 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 308 flow [2024-12-02 12:05:12,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-12-02 12:05:12,206 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-12-02 12:05:12,206 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 308 flow [2024-12-02 12:05:12,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:12,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:12,207 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-02 12:05:12,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:05:12,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 12:05:12,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 490057572, now seen corresponding path program 1 times [2024-12-02 12:05:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:12,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848861024] [2024-12-02 12:05:12,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:05:12,227 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:05:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:05:12,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 12:05:12,244 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:05:12,244 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-12-02 12:05:12,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-12-02 12:05:12,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-12-02 12:05:12,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-12-02 12:05:12,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-12-02 12:05:12,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-12-02 12:05:12,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:05:12,246 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 12:05:12,246 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 12:05:12,246 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 12:05:12,276 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 12:05:12,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 287 flow [2024-12-02 12:05:12,301 INFO L124 PetriNetUnfolderBase]: 34/235 cut-off events. [2024-12-02 12:05:12,301 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 12:05:12,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 235 events. 34/235 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 162. Up to 12 conditions per place. [2024-12-02 12:05:12,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 287 flow [2024-12-02 12:05:12,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 287 flow [2024-12-02 12:05:12,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:05:12,307 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;@7b77916b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:05:12,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-02 12:05:12,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:05:12,308 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 12:05:12,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:05:12,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:12,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:05:12,309 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 12:05:12,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash 559680831, now seen corresponding path program 1 times [2024-12-02 12:05:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:12,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732530731] [2024-12-02 12:05:12,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:12,348 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 12:05:12,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732530731] [2024-12-02 12:05:12,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732530731] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:12,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:12,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024151317] [2024-12-02 12:05:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:12,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:12,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:12,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:12,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:12,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-12-02 12:05:12,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:12,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:12,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-12-02 12:05:12,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:23,587 INFO L124 PetriNetUnfolderBase]: 121220/195109 cut-off events. [2024-12-02 12:05:23,588 INFO L125 PetriNetUnfolderBase]: For 2007/2007 co-relation queries the response was YES. [2024-12-02 12:05:23,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364050 conditions, 195109 events. 121220/195109 cut-off events. For 2007/2007 co-relation queries the response was YES. Maximal size of possible extension queue 3778. Compared 1844895 event pairs, 20717 based on Foata normal form. 43359/223985 useless extension candidates. Maximal degree in co-relation 168087. Up to 115300 conditions per place. [2024-12-02 12:05:24,514 INFO L140 encePairwiseOnDemand]: 105/130 looper letters, 135 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2024-12-02 12:05:24,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 187 transitions, 679 flow [2024-12-02 12:05:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-12-02 12:05:24,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7461538461538462 [2024-12-02 12:05:24,517 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 287 flow. Second operand 4 states and 388 transitions. [2024-12-02 12:05:24,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 187 transitions, 679 flow [2024-12-02 12:05:24,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 187 transitions, 679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:05:24,523 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 253 flow [2024-12-02 12:05:24,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-12-02 12:05:24,524 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2024-12-02 12:05:24,524 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 253 flow [2024-12-02 12:05:24,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:24,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:24,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:05:24,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:05:24,525 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:05:24,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash 170237155, now seen corresponding path program 1 times [2024-12-02 12:05:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:24,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200109869] [2024-12-02 12:05:24,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:24,565 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 12:05:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200109869] [2024-12-02 12:05:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200109869] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:24,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246022460] [2024-12-02 12:05:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:24,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:24,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:24,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:24,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-12-02 12:05:24,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:24,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:24,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-12-02 12:05:24,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:37,654 INFO L124 PetriNetUnfolderBase]: 121206/215568 cut-off events. [2024-12-02 12:05:37,654 INFO L125 PetriNetUnfolderBase]: For 10852/10852 co-relation queries the response was YES. [2024-12-02 12:05:37,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393338 conditions, 215568 events. 121206/215568 cut-off events. For 10852/10852 co-relation queries the response was YES. Maximal size of possible extension queue 4360. Compared 2269244 event pairs, 85388 based on Foata normal form. 15/203055 useless extension candidates. Maximal degree in co-relation 36127. Up to 167356 conditions per place. [2024-12-02 12:05:38,508 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 87 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-12-02 12:05:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 138 transitions, 495 flow [2024-12-02 12:05:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:05:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:05:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-12-02 12:05:38,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-12-02 12:05:38,509 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 253 flow. Second operand 4 states and 284 transitions. [2024-12-02 12:05:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 138 transitions, 495 flow [2024-12-02 12:05:38,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:05:38,521 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2024-12-02 12:05:38,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-12-02 12:05:38,521 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2024-12-02 12:05:38,521 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2024-12-02 12:05:38,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:38,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:38,522 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:05:38,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:05:38,522 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)] === [2024-12-02 12:05:38,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash 220771412, now seen corresponding path program 1 times [2024-12-02 12:05:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626036559] [2024-12-02 12:05:38,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:38,580 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 12:05:38,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626036559] [2024-12-02 12:05:38,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626036559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:38,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:38,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:05:38,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314106836] [2024-12-02 12:05:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:38,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:38,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:38,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:38,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 130 [2024-12-02 12:05:38,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:38,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:38,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 130 [2024-12-02 12:05:38,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:05:57,952 INFO L124 PetriNetUnfolderBase]: 176829/308517 cut-off events. [2024-12-02 12:05:57,953 INFO L125 PetriNetUnfolderBase]: For 10228/13570 co-relation queries the response was YES. [2024-12-02 12:05:58,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563423 conditions, 308517 events. 176829/308517 cut-off events. For 10228/13570 co-relation queries the response was YES. Maximal size of possible extension queue 6449. Compared 3339857 event pairs, 59416 based on Foata normal form. 3925/290594 useless extension candidates. Maximal degree in co-relation 563309. Up to 159474 conditions per place. [2024-12-02 12:05:59,633 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 194 selfloop transitions, 16 changer transitions 0/259 dead transitions. [2024-12-02 12:05:59,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 259 transitions, 1053 flow [2024-12-02 12:05:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:05:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:05:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2024-12-02 12:05:59,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7015384615384616 [2024-12-02 12:05:59,636 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 267 flow. Second operand 5 states and 456 transitions. [2024-12-02 12:05:59,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 259 transitions, 1053 flow [2024-12-02 12:05:59,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 259 transitions, 1049 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:05:59,651 INFO L231 Difference]: Finished difference. Result has 125 places, 126 transitions, 393 flow [2024-12-02 12:05:59,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2024-12-02 12:05:59,652 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2024-12-02 12:05:59,652 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 393 flow [2024-12-02 12:05:59,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:59,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:05:59,652 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 12:05:59,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:05:59,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:05:59,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:05:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1557222826, now seen corresponding path program 1 times [2024-12-02 12:05:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:05:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143865123] [2024-12-02 12:05:59,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:05:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:05:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:05:59,687 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 12:05:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:05:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143865123] [2024-12-02 12:05:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143865123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:05:59,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:05:59,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:05:59,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393098874] [2024-12-02 12:05:59,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:05:59,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:05:59,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:05:59,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:05:59,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:05:59,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-12-02 12:05:59,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:05:59,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:05:59,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-12-02 12:05:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:06:19,447 INFO L124 PetriNetUnfolderBase]: 175239/292358 cut-off events. [2024-12-02 12:06:19,448 INFO L125 PetriNetUnfolderBase]: For 97301/97339 co-relation queries the response was YES. [2024-12-02 12:06:20,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620860 conditions, 292358 events. 175239/292358 cut-off events. For 97301/97339 co-relation queries the response was YES. Maximal size of possible extension queue 6122. Compared 2999116 event pairs, 33097 based on Foata normal form. 0/277275 useless extension candidates. Maximal degree in co-relation 462606. Up to 210803 conditions per place. [2024-12-02 12:06:20,958 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 164 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2024-12-02 12:06:20,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 218 transitions, 1015 flow [2024-12-02 12:06:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:06:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:06:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-12-02 12:06:20,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-12-02 12:06:20,960 INFO L175 Difference]: Start difference. First operand has 125 places, 126 transitions, 393 flow. Second operand 4 states and 332 transitions. [2024-12-02 12:06:20,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 218 transitions, 1015 flow [2024-12-02 12:06:21,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 218 transitions, 1015 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:06:21,039 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 409 flow [2024-12-02 12:06:21,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2024-12-02 12:06:21,040 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2024-12-02 12:06:21,040 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 409 flow [2024-12-02 12:06:21,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:06:21,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:06:21,040 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:06:21,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:06:21,040 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:06:21,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:06:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1815885477, now seen corresponding path program 1 times [2024-12-02 12:06:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:06:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814170960] [2024-12-02 12:06:21,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:06:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:06:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:06:21,091 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 12:06:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:06:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814170960] [2024-12-02 12:06:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814170960] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:06:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:06:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:06:21,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206498199] [2024-12-02 12:06:21,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:06:21,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:06:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:06:21,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:06:21,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:06:21,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 130 [2024-12-02 12:06:21,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 12:06:21,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:06:21,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 130 [2024-12-02 12:06:21,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:06:43,779 INFO L124 PetriNetUnfolderBase]: 192689/337385 cut-off events. [2024-12-02 12:06:43,779 INFO L125 PetriNetUnfolderBase]: For 141477/142365 co-relation queries the response was YES. [2024-12-02 12:06:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710745 conditions, 337385 events. 192689/337385 cut-off events. For 141477/142365 co-relation queries the response was YES. Maximal size of possible extension queue 7261. Compared 3710776 event pairs, 65148 based on Foata normal form. 8775/325684 useless extension candidates. Maximal degree in co-relation 452088. Up to 175900 conditions per place. [2024-12-02 12:06:45,715 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 195 selfloop transitions, 27 changer transitions 0/270 dead transitions. [2024-12-02 12:06:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 270 transitions, 1297 flow [2024-12-02 12:06:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:06:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:06:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2024-12-02 12:06:45,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-12-02 12:06:45,718 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 409 flow. Second operand 5 states and 455 transitions. [2024-12-02 12:06:45,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 270 transitions, 1297 flow [2024-12-02 12:06:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 270 transitions, 1282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:06:45,951 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 578 flow [2024-12-02 12:06:45,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2024-12-02 12:06:45,952 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 19 predicate places. [2024-12-02 12:06:45,952 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 578 flow [2024-12-02 12:06:45,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 12:06:45,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:06:45,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:06:45,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:06:45,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:06:45,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:06:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1596706309, now seen corresponding path program 1 times [2024-12-02 12:06:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:06:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4790643] [2024-12-02 12:06:45,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:06:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:06:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:06:46,058 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 12:06:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:06:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4790643] [2024-12-02 12:06:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4790643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:06:46,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:06:46,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:06:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933496219] [2024-12-02 12:06:46,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:06:46,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:06:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:06:46,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:06:46,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:06:46,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2024-12-02 12:06:46,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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 12:06:46,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:06:46,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2024-12-02 12:06:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:07:20,051 INFO L124 PetriNetUnfolderBase]: 248197/424303 cut-off events. [2024-12-02 12:07:20,051 INFO L125 PetriNetUnfolderBase]: For 284722/290231 co-relation queries the response was YES. [2024-12-02 12:07:21,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956236 conditions, 424303 events. 248197/424303 cut-off events. For 284722/290231 co-relation queries the response was YES. Maximal size of possible extension queue 9432. Compared 4660936 event pairs, 57844 based on Foata normal form. 8726/411018 useless extension candidates. Maximal degree in co-relation 620830. Up to 174431 conditions per place. [2024-12-02 12:07:22,660 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 354 selfloop transitions, 52 changer transitions 0/452 dead transitions. [2024-12-02 12:07:22,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 452 transitions, 2392 flow [2024-12-02 12:07:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:07:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:07:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 808 transitions. [2024-12-02 12:07:22,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6905982905982906 [2024-12-02 12:07:22,663 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 578 flow. Second operand 9 states and 808 transitions. [2024-12-02 12:07:22,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 452 transitions, 2392 flow [2024-12-02 12:07:25,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 452 transitions, 2392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:07:25,060 INFO L231 Difference]: Finished difference. Result has 147 places, 164 transitions, 975 flow [2024-12-02 12:07:25,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=975, PETRI_PLACES=147, PETRI_TRANSITIONS=164} [2024-12-02 12:07:25,061 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 33 predicate places. [2024-12-02 12:07:25,061 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 164 transitions, 975 flow [2024-12-02 12:07:25,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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 12:07:25,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:07:25,061 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:07:25,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:07:25,062 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:07:25,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:07:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2041711261, now seen corresponding path program 1 times [2024-12-02 12:07:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:07:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159724194] [2024-12-02 12:07:25,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:07:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:07:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:07:25,146 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 12:07:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:07:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159724194] [2024-12-02 12:07:25,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159724194] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:07:25,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:07:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:07:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55887752] [2024-12-02 12:07:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:07:25,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:07:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:07:25,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:07:25,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:07:25,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2024-12-02 12:07:25,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 164 transitions, 975 flow. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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 12:07:25,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:07:25,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2024-12-02 12:07:25,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:08:09,830 INFO L124 PetriNetUnfolderBase]: 268282/466854 cut-off events. [2024-12-02 12:08:09,830 INFO L125 PetriNetUnfolderBase]: For 764278/769545 co-relation queries the response was YES. [2024-12-02 12:08:11,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182704 conditions, 466854 events. 268282/466854 cut-off events. For 764278/769545 co-relation queries the response was YES. Maximal size of possible extension queue 10381. Compared 5286257 event pairs, 59016 based on Foata normal form. 9631/451294 useless extension candidates. Maximal degree in co-relation 1095508. Up to 162939 conditions per place. [2024-12-02 12:08:13,322 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 354 selfloop transitions, 79 changer transitions 0/479 dead transitions. [2024-12-02 12:08:13,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 479 transitions, 3045 flow [2024-12-02 12:08:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:08:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:08:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 809 transitions. [2024-12-02 12:08:13,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6914529914529914 [2024-12-02 12:08:13,325 INFO L175 Difference]: Start difference. First operand has 147 places, 164 transitions, 975 flow. Second operand 9 states and 809 transitions. [2024-12-02 12:08:13,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 479 transitions, 3045 flow [2024-12-02 12:09:01,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 479 transitions, 2872 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-12-02 12:09:01,764 INFO L231 Difference]: Finished difference. Result has 155 places, 192 transitions, 1452 flow [2024-12-02 12:09:01,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1452, PETRI_PLACES=155, PETRI_TRANSITIONS=192} [2024-12-02 12:09:01,765 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 41 predicate places. [2024-12-02 12:09:01,765 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 192 transitions, 1452 flow [2024-12-02 12:09:01,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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 12:09:01,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:09:01,766 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-12-02 12:09:01,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:09:01,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 12:09:01,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:09:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1858526334, now seen corresponding path program 1 times [2024-12-02 12:09:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:09:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325582703] [2024-12-02 12:09:01,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:09:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:09:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:09:01,783 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:09:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:09:01,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 12:09:01,801 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:09:01,801 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-12-02 12:09:01,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-12-02 12:09:01,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-12-02 12:09:01,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-12-02 12:09:01,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-12-02 12:09:01,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-12-02 12:09:01,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-12-02 12:09:01,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-12-02 12:09:01,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-12-02 12:09:01,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:09:01,804 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:09:01,805 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 12:09:01,805 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 12:09:01,839 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 12:09:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 164 transitions, 368 flow [2024-12-02 12:09:01,872 INFO L124 PetriNetUnfolderBase]: 55/363 cut-off events. [2024-12-02 12:09:01,872 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 12:09:01,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 363 events. 55/363 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1650 event pairs, 6 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 263. Up to 32 conditions per place. [2024-12-02 12:09:01,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 164 transitions, 368 flow [2024-12-02 12:09:01,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 164 transitions, 368 flow [2024-12-02 12:09:01,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:09:01,879 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;@7b77916b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:09:01,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-12-02 12:09:01,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:09:01,880 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 12:09:01,880 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:09:01,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:09:01,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:09:01,881 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)] === [2024-12-02 12:09:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:09:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 716217603, now seen corresponding path program 1 times [2024-12-02 12:09:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:09:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078291972] [2024-12-02 12:09:01,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:09:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:09:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:09:01,912 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 12:09:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:09:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078291972] [2024-12-02 12:09:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078291972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:09:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:09:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:09:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484652272] [2024-12-02 12:09:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:09:01,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:09:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:09:01,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:09:01,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:09:01,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 164 [2024-12-02 12:09:01,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 164 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 12:09:01,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:09:01,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 164 [2024-12-02 12:09:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand