./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:44:16,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:44:16,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:44:16,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:44:16,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:44:16,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:44:16,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:44:16,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:44:16,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:44:16,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:44:16,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:44:16,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:44:16,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:44:16,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:44:16,188 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:44:16,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:44:16,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:44:16,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:44:16,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:44:16,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:44:16,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:44:16,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:44:16,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:44:16,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:44:16,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:44:16,191 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:44:16,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:44:16,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:44:16,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:44:16,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:44:16,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:44:16,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:44:16,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:44:16,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:44:16,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:44:16,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:44:16,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:44:16,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:44:16,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:44:16,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:44:16,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:44:16,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:44:16,197 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2024-10-14 14:44:16,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:44:16,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:44:16,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:44:16,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:44:16,468 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:44:16,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-14 14:44:17,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:44:18,129 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:44:18,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-14 14:44:18,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc82e281d/cf0067e65b024a249ee8bae7d993ea11/FLAG79507fc50 [2024-10-14 14:44:18,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc82e281d/cf0067e65b024a249ee8bae7d993ea11 [2024-10-14 14:44:18,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:44:18,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:44:18,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:44:18,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:44:18,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:44:18,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77fec0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18, skipping insertion in model container [2024-10-14 14:44:18,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:44:18,383 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-14 14:44:18,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:44:18,409 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:44:18,443 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-14 14:44:18,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:44:18,474 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:44:18,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18 WrapperNode [2024-10-14 14:44:18,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:44:18,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:44:18,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:44:18,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:44:18,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,514 INFO L138 Inliner]: procedures = 22, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2024-10-14 14:44:18,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:44:18,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:44:18,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:44:18,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:44:18,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,546 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 14:44:18,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:44:18,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:44:18,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:44:18,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:44:18,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (1/1) ... [2024-10-14 14:44:18,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:44:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:44:18,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:44:18,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:44:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:44:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:44:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:44:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:44:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:44:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:44:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:44:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:44:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:44:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:44:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:44:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:44:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:44:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:44:18,679 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:44:18,799 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:44:18,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:44:19,066 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:44:19,066 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:44:19,234 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:44:19,235 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:44:19,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:19 BoogieIcfgContainer [2024-10-14 14:44:19,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:44:19,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:44:19,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:44:19,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:44:19,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:44:18" (1/3) ... [2024-10-14 14:44:19,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6e9c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:19, skipping insertion in model container [2024-10-14 14:44:19,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:18" (2/3) ... [2024-10-14 14:44:19,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6e9c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:19, skipping insertion in model container [2024-10-14 14:44:19,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:19" (3/3) ... [2024-10-14 14:44:19,247 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-10-14 14:44:19,267 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:44:19,267 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:44:19,268 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:44:19,343 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 14:44:19,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 132 flow [2024-10-14 14:44:19,419 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-10-14 14:44:19,419 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:44:19,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 0/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-14 14:44:19,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 132 flow [2024-10-14 14:44:19,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 118 flow [2024-10-14 14:44:19,440 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:44:19,446 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;@7dd0463b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:44:19,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 14:44:19,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:44:19,466 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-10-14 14:44:19,466 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:44:19,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:19,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:19,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:19,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash -571517718, now seen corresponding path program 1 times [2024-10-14 14:44:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:19,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068106648] [2024-10-14 14:44:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068106648] [2024-10-14 14:44:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068106648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:20,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:20,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:44:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245558153] [2024-10-14 14:44:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:20,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:44:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:44:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:44:20,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-14 14:44:20,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:20,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:20,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-14 14:44:20,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:20,513 INFO L124 PetriNetUnfolderBase]: 637/1259 cut-off events. [2024-10-14 14:44:20,516 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-10-14 14:44:20,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1259 events. 637/1259 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7937 event pairs, 160 based on Foata normal form. 9/1195 useless extension candidates. Maximal degree in co-relation 2039. Up to 825 conditions per place. [2024-10-14 14:44:20,538 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-14 14:44:20,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 209 flow [2024-10-14 14:44:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:44:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:44:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-14 14:44:20,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-14 14:44:20,553 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 118 flow. Second operand 3 states and 117 transitions. [2024-10-14 14:44:20,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 209 flow [2024-10-14 14:44:20,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 14:44:20,562 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 110 flow [2024-10-14 14:44:20,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-14 14:44:20,570 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-10-14 14:44:20,570 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 110 flow [2024-10-14 14:44:20,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:20,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:20,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:20,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:44:20,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:20,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 683831154, now seen corresponding path program 2 times [2024-10-14 14:44:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117334593] [2024-10-14 14:44:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117334593] [2024-10-14 14:44:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117334593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:20,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:44:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683288186] [2024-10-14 14:44:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:20,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:44:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:44:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:44:20,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-14 14:44:20,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:20,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:20,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-14 14:44:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:20,900 INFO L124 PetriNetUnfolderBase]: 597/1161 cut-off events. [2024-10-14 14:44:20,900 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-14 14:44:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1161 events. 597/1161 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7158 event pairs, 424 based on Foata normal form. 24/1137 useless extension candidates. Maximal degree in co-relation 2045. Up to 853 conditions per place. [2024-10-14 14:44:20,908 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-14 14:44:20,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 196 flow [2024-10-14 14:44:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:44:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:44:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-14 14:44:20,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-14 14:44:20,911 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 110 flow. Second operand 3 states and 117 transitions. [2024-10-14 14:44:20,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 196 flow [2024-10-14 14:44:20,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:44:20,915 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 114 flow [2024-10-14 14:44:20,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-10-14 14:44:20,917 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-10-14 14:44:20,917 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 114 flow [2024-10-14 14:44:20,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:20,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:20,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:20,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:44:20,918 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:20,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1382445256, now seen corresponding path program 3 times [2024-10-14 14:44:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200125645] [2024-10-14 14:44:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:20,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200125645] [2024-10-14 14:44:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200125645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:21,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:44:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189852609] [2024-10-14 14:44:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:21,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:44:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:44:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:44:21,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-14 14:44:21,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:21,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:21,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-14 14:44:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:21,310 INFO L124 PetriNetUnfolderBase]: 599/1145 cut-off events. [2024-10-14 14:44:21,313 INFO L125 PetriNetUnfolderBase]: For 144/149 co-relation queries the response was YES. [2024-10-14 14:44:21,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1145 events. 599/1145 cut-off events. For 144/149 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6908 event pairs, 142 based on Foata normal form. 23/1119 useless extension candidates. Maximal degree in co-relation 2222. Up to 857 conditions per place. [2024-10-14 14:44:21,321 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 32 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-14 14:44:21,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 209 flow [2024-10-14 14:44:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:44:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:44:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-14 14:44:21,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2024-10-14 14:44:21,325 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 114 flow. Second operand 3 states and 119 transitions. [2024-10-14 14:44:21,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 209 flow [2024-10-14 14:44:21,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:44:21,330 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 118 flow [2024-10-14 14:44:21,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-10-14 14:44:21,331 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-10-14 14:44:21,332 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 118 flow [2024-10-14 14:44:21,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:21,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:21,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:21,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:44:21,333 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:21,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1544007566, now seen corresponding path program 4 times [2024-10-14 14:44:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:21,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057075756] [2024-10-14 14:44:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057075756] [2024-10-14 14:44:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057075756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:21,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:21,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:44:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526585288] [2024-10-14 14:44:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:21,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:44:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:44:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:44:21,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-14 14:44:21,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:21,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:21,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-14 14:44:21,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:21,628 INFO L124 PetriNetUnfolderBase]: 507/1019 cut-off events. [2024-10-14 14:44:21,629 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-10-14 14:44:21,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1019 events. 507/1019 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5990 event pairs, 156 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 2028. Up to 645 conditions per place. [2024-10-14 14:44:21,638 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-14 14:44:21,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 198 flow [2024-10-14 14:44:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:44:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:44:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-14 14:44:21,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-10-14 14:44:21,642 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 118 flow. Second operand 3 states and 115 transitions. [2024-10-14 14:44:21,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 198 flow [2024-10-14 14:44:21,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:44:21,646 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 122 flow [2024-10-14 14:44:21,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-10-14 14:44:21,647 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-10-14 14:44:21,648 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 122 flow [2024-10-14 14:44:21,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-14 14:44:21,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:21,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:21,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:44:21,648 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:21,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 161657270, now seen corresponding path program 5 times [2024-10-14 14:44:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297653349] [2024-10-14 14:44:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297653349] [2024-10-14 14:44:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297653349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-14 14:44:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976617513] [2024-10-14 14:44:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:23,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 14:44:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 14:44:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:44:23,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-14 14:44:23,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 122 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:23,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:23,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-14 14:44:23,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:27,072 INFO L124 PetriNetUnfolderBase]: 13819/19920 cut-off events. [2024-10-14 14:44:27,073 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2024-10-14 14:44:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43095 conditions, 19920 events. 13819/19920 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 116001 event pairs, 1845 based on Foata normal form. 1/19900 useless extension candidates. Maximal degree in co-relation 12347. Up to 4778 conditions per place. [2024-10-14 14:44:27,209 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 217 selfloop transitions, 13 changer transitions 19/258 dead transitions. [2024-10-14 14:44:27,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 258 transitions, 1129 flow [2024-10-14 14:44:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:44:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 14:44:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 432 transitions. [2024-10-14 14:44:27,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-10-14 14:44:27,213 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 122 flow. Second operand 14 states and 432 transitions. [2024-10-14 14:44:27,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 258 transitions, 1129 flow [2024-10-14 14:44:27,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 258 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:44:27,222 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 223 flow [2024-10-14 14:44:27,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=223, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-10-14 14:44:27,223 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-10-14 14:44:27,225 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 223 flow [2024-10-14 14:44:27,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:27,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:27,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:27,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:44:27,226 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:27,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1223085626, now seen corresponding path program 6 times [2024-10-14 14:44:27,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:27,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554207952] [2024-10-14 14:44:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:29,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554207952] [2024-10-14 14:44:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554207952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-14 14:44:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125796295] [2024-10-14 14:44:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:29,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 14:44:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 14:44:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:44:29,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-14 14:44:29,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 223 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:29,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:29,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-14 14:44:29,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:34,972 INFO L124 PetriNetUnfolderBase]: 37970/55199 cut-off events. [2024-10-14 14:44:34,972 INFO L125 PetriNetUnfolderBase]: For 44563/44563 co-relation queries the response was YES. [2024-10-14 14:44:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150640 conditions, 55199 events. 37970/55199 cut-off events. For 44563/44563 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 371807 event pairs, 4605 based on Foata normal form. 1/55181 useless extension candidates. Maximal degree in co-relation 150461. Up to 15677 conditions per place. [2024-10-14 14:44:35,409 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 274 selfloop transitions, 25 changer transitions 10/318 dead transitions. [2024-10-14 14:44:35,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 318 transitions, 1826 flow [2024-10-14 14:44:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:44:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 14:44:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 434 transitions. [2024-10-14 14:44:35,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-10-14 14:44:35,412 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 223 flow. Second operand 14 states and 434 transitions. [2024-10-14 14:44:35,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 318 transitions, 1826 flow [2024-10-14 14:44:36,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 318 transitions, 1784 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-14 14:44:36,184 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 474 flow [2024-10-14 14:44:36,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=474, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-14 14:44:36,188 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2024-10-14 14:44:36,188 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 474 flow [2024-10-14 14:44:36,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:36,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:36,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:44:36,190 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 610348320, now seen corresponding path program 7 times [2024-10-14 14:44:36,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:36,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284907482] [2024-10-14 14:44:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:36,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284907482] [2024-10-14 14:44:37,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284907482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:37,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-14 14:44:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721761815] [2024-10-14 14:44:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:37,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 14:44:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 14:44:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:44:37,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-14 14:44:37,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 474 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:37,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:37,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-14 14:44:37,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:44:46,630 INFO L124 PetriNetUnfolderBase]: 62785/91729 cut-off events. [2024-10-14 14:44:46,630 INFO L125 PetriNetUnfolderBase]: For 160282/160282 co-relation queries the response was YES. [2024-10-14 14:44:47,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284168 conditions, 91729 events. 62785/91729 cut-off events. For 160282/160282 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 668498 event pairs, 11681 based on Foata normal form. 1/91695 useless extension candidates. Maximal degree in co-relation 283747. Up to 20868 conditions per place. [2024-10-14 14:44:47,494 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 288 selfloop transitions, 44 changer transitions 11/352 dead transitions. [2024-10-14 14:44:47,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 352 transitions, 2495 flow [2024-10-14 14:44:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:44:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 14:44:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-10-14 14:44:47,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-10-14 14:44:47,497 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 474 flow. Second operand 14 states and 428 transitions. [2024-10-14 14:44:47,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 352 transitions, 2495 flow [2024-10-14 14:44:49,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 352 transitions, 2455 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-14 14:44:49,083 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 957 flow [2024-10-14 14:44:49,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=957, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-10-14 14:44:49,084 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2024-10-14 14:44:49,084 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 957 flow [2024-10-14 14:44:49,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:49,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:44:49,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:44:49,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:44:49,085 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 14:44:49,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:44:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1973642582, now seen corresponding path program 8 times [2024-10-14 14:44:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:44:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767678554] [2024-10-14 14:44:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:44:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:44:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:44:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:44:50,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:44:50,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767678554] [2024-10-14 14:44:50,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767678554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:44:50,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:44:50,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-14 14:44:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752253368] [2024-10-14 14:44:50,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:44:50,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 14:44:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:44:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 14:44:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:44:50,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-14 14:44:50,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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) [2024-10-14 14:44:50,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:44:50,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-14 14:44:50,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand