./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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 ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.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 dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 15:11:21,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:11:21,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:11:21,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:11:21,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:11:21,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:11:21,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:11:21,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:11:21,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:11:21,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:11:21,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:11:21,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:11:21,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:11:21,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:11:21,475 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:11:21,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:11:21,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:11:21,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:11:21,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:11:21,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:11:21,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:11:21,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:11:21,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:11:21,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:11:21,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:11:21,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:11:21,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:11:21,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:11:21,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:11:21,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:11:21,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:11:21,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:11:21,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:11:21,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:11:21,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:11:21,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:11:21,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:11:21,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:11:21,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:11:21,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:11:21,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:11:21,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:11:21,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:11:21,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:11:21,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:11:21,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:11:21,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:11:21,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:11:21,823 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:11:21,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-02-19 15:11:22,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:11:23,182 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:11:23,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-02-19 15:11:23,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264066d17/4fd673f5871f404193d312dcad91b0ec/FLAGc9ddbcbdc [2024-02-19 15:11:23,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264066d17/4fd673f5871f404193d312dcad91b0ec [2024-02-19 15:11:23,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:11:23,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:11:23,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:11:23,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:11:23,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:11:23,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4cbff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23, skipping insertion in model container [2024-02-19 15:11:23,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,241 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:11:23,427 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2024-02-19 15:11:23,431 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:11:23,440 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:11:23,469 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2024-02-19 15:11:23,473 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:11:23,488 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:11:23,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23 WrapperNode [2024-02-19 15:11:23,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:11:23,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:11:23,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:11:23,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:11:23,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,546 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-02-19 15:11:23,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:11:23,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:11:23,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:11:23,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:11:23,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,593 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-19 15:11:23,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:11:23,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:11:23,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:11:23,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:11:23,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (1/1) ... [2024-02-19 15:11:23,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:11:23,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:23,658 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) [2024-02-19 15:11:23,691 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 [2024-02-19 15:11:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:11:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:11:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:11:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:11:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:11:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:11:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:11:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:11:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:11:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:11:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:11:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:11:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 15:11:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 15:11:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:11:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:11:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:11:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:11:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:11:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:11:23,727 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 15:11:23,846 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:11:23,848 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:11:24,075 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:11:24,075 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:11:24,223 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:11:24,223 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-19 15:11:24,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:11:24 BoogieIcfgContainer [2024-02-19 15:11:24,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:11:24,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:11:24,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:11:24,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:11:24,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:11:23" (1/3) ... [2024-02-19 15:11:24,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140497e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:11:24, skipping insertion in model container [2024-02-19 15:11:24,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:11:23" (2/3) ... [2024-02-19 15:11:24,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140497e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:11:24, skipping insertion in model container [2024-02-19 15:11:24,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:11:24" (3/3) ... [2024-02-19 15:11:24,234 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-02-19 15:11:24,251 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:11:24,251 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:11:24,251 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:11:24,293 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-19 15:11:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-02-19 15:11:24,354 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-02-19 15:11:24,354 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 15:11:24,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-02-19 15:11:24,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-02-19 15:11:24,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-02-19 15:11:24,377 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:11:24,383 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@66f4e0db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:11:24,383 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-19 15:11:24,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:11:24,398 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-02-19 15:11:24,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 15:11:24,398 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:24,399 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:24,399 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:24,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1131420901, now seen corresponding path program 1 times [2024-02-19 15:11:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74791951] [2024-02-19 15:11:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:24,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74791951] [2024-02-19 15:11:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74791951] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:11:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:11:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 15:11:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632969586] [2024-02-19 15:11:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:11:24,781 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:11:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:11:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:11:24,820 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-02-19 15:11:24,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-02-19 15:11:24,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:24,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-02-19 15:11:24,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:24,901 INFO L124 PetriNetUnfolderBase]: 73/147 cut-off events. [2024-02-19 15:11:24,901 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-19 15:11:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 147 events. 73/147 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 510 event pairs, 32 based on Foata normal form. 10/154 useless extension candidates. Maximal degree in co-relation 235. Up to 97 conditions per place. [2024-02-19 15:11:24,907 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 19 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-02-19 15:11:24,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 111 flow [2024-02-19 15:11:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:11:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:11:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-02-19 15:11:24,921 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-02-19 15:11:24,927 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2024-02-19 15:11:24,927 INFO L507 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 111 flow [2024-02-19 15:11:24,928 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-02-19 15:11:24,928 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:24,928 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:24,928 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:11:24,929 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:24,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2123043355, now seen corresponding path program 1 times [2024-02-19 15:11:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:24,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511186150] [2024-02-19 15:11:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:11:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511186150] [2024-02-19 15:11:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511186150] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:11:25,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:11:25,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 15:11:25,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714800086] [2024-02-19 15:11:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:11:25,058 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:11:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:11:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:11:25,063 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-02-19 15:11:25,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-02-19 15:11:25,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:25,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-02-19 15:11:25,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:25,135 INFO L124 PetriNetUnfolderBase]: 92/188 cut-off events. [2024-02-19 15:11:25,135 INFO L125 PetriNetUnfolderBase]: For 68/72 co-relation queries the response was YES. [2024-02-19 15:11:25,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 188 events. 92/188 cut-off events. For 68/72 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 644 event pairs, 27 based on Foata normal form. 13/200 useless extension candidates. Maximal degree in co-relation 443. Up to 123 conditions per place. [2024-02-19 15:11:25,138 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 29 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2024-02-19 15:11:25,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 224 flow [2024-02-19 15:11:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:11:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:11:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-02-19 15:11:25,140 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-02-19 15:11:25,141 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2024-02-19 15:11:25,141 INFO L507 AbstractCegarLoop]: Abstraction has has 30 places, 37 transitions, 224 flow [2024-02-19 15:11:25,141 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-02-19 15:11:25,141 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:25,142 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:25,142 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:11:25,142 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:25,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -959904887, now seen corresponding path program 1 times [2024-02-19 15:11:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312167423] [2024-02-19 15:11:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:25,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312167423] [2024-02-19 15:11:25,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312167423] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227525271] [2024-02-19 15:11:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:25,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:25,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:25,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:25,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 15:11:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:25,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:25,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:26,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227525271] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:26,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:26,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:26,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982502505] [2024-02-19 15:11:26,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:26,546 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:26,605 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:26,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 37 transitions, 224 flow. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-19 15:11:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:27,596 INFO L124 PetriNetUnfolderBase]: 414/726 cut-off events. [2024-02-19 15:11:27,596 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-02-19 15:11:27,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 726 events. 414/726 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3072 event pairs, 24 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 2381. Up to 439 conditions per place. [2024-02-19 15:11:27,603 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 111 selfloop transitions, 70 changer transitions 16/198 dead transitions. [2024-02-19 15:11:27,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 198 transitions, 1505 flow [2024-02-19 15:11:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 15:11:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 15:11:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 252 transitions. [2024-02-19 15:11:27,607 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-02-19 15:11:27,608 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2024-02-19 15:11:27,608 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 198 transitions, 1505 flow [2024-02-19 15:11:27,609 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-19 15:11:27,609 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:27,609 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:27,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:27,827 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:27,827 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:27,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:27,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2058927283, now seen corresponding path program 2 times [2024-02-19 15:11:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838930069] [2024-02-19 15:11:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:28,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:28,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838930069] [2024-02-19 15:11:28,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838930069] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:28,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170779397] [2024-02-19 15:11:28,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:11:28,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:28,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:28,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 15:11:28,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:11:28,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:28,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:28,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:28,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170779397] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:28,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746777192] [2024-02-19 15:11:28,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:28,759 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:28,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:28,781 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:28,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 198 transitions, 1505 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:28,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:28,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:28,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:29,714 INFO L124 PetriNetUnfolderBase]: 639/1163 cut-off events. [2024-02-19 15:11:29,714 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2024-02-19 15:11:29,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 1163 events. 639/1163 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5798 event pairs, 26 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 4890. Up to 730 conditions per place. [2024-02-19 15:11:29,723 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 202 selfloop transitions, 112 changer transitions 69/384 dead transitions. [2024-02-19 15:11:29,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 384 transitions, 3747 flow [2024-02-19 15:11:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-19 15:11:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-19 15:11:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 264 transitions. [2024-02-19 15:11:29,725 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-19 15:11:29,726 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-02-19 15:11:29,726 INFO L507 AbstractCegarLoop]: Abstraction has has 83 places, 384 transitions, 3747 flow [2024-02-19 15:11:29,727 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:29,727 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:29,727 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:29,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:29,947 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 15:11:29,948 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:29,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1500325235, now seen corresponding path program 3 times [2024-02-19 15:11:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797310678] [2024-02-19 15:11:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797310678] [2024-02-19 15:11:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797310678] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540752054] [2024-02-19 15:11:30,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:11:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:30,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:30,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:30,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 15:11:30,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:11:30,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:30,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:30,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:30,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540752054] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:30,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:30,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256587428] [2024-02-19 15:11:30,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:30,868 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:30,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:30,883 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:30,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 384 transitions, 3747 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:30,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:30,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:30,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:32,071 INFO L124 PetriNetUnfolderBase]: 707/1306 cut-off events. [2024-02-19 15:11:32,072 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-02-19 15:11:32,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1306 events. 707/1306 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6900 event pairs, 20 based on Foata normal form. 2/1308 useless extension candidates. Maximal degree in co-relation 6728. Up to 838 conditions per place. [2024-02-19 15:11:32,083 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 206 selfloop transitions, 131 changer transitions 117/455 dead transitions. [2024-02-19 15:11:32,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 455 transitions, 5370 flow [2024-02-19 15:11:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-19 15:11:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-19 15:11:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 298 transitions. [2024-02-19 15:11:32,087 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-02-19 15:11:32,089 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2024-02-19 15:11:32,089 INFO L507 AbstractCegarLoop]: Abstraction has has 114 places, 455 transitions, 5370 flow [2024-02-19 15:11:32,089 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:32,090 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:32,090 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:32,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:32,300 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:32,301 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:32,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:32,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1970331819, now seen corresponding path program 4 times [2024-02-19 15:11:32,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:32,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543871420] [2024-02-19 15:11:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:32,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543871420] [2024-02-19 15:11:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543871420] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518246264] [2024-02-19 15:11:32,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:11:32,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:32,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:32,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:32,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 15:11:32,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:11:32,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:32,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 15:11:32,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:32,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518246264] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:33,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:33,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-02-19 15:11:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377855613] [2024-02-19 15:11:33,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:33,193 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:33,217 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:33,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 455 transitions, 5370 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 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) [2024-02-19 15:11:33,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:33,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:33,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:34,848 INFO L124 PetriNetUnfolderBase]: 1084/2008 cut-off events. [2024-02-19 15:11:34,848 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-02-19 15:11:34,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13230 conditions, 2008 events. 1084/2008 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11608 event pairs, 12 based on Foata normal form. 4/2012 useless extension candidates. Maximal degree in co-relation 12368. Up to 1386 conditions per place. [2024-02-19 15:11:34,866 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 368 selfloop transitions, 251 changer transitions 193/813 dead transitions. [2024-02-19 15:11:34,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 813 transitions, 11234 flow [2024-02-19 15:11:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-19 15:11:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-19 15:11:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 383 transitions. [2024-02-19 15:11:34,868 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43522727272727274 [2024-02-19 15:11:34,869 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2024-02-19 15:11:34,869 INFO L507 AbstractCegarLoop]: Abstraction has has 153 places, 813 transitions, 11234 flow [2024-02-19 15:11:34,869 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 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) [2024-02-19 15:11:34,869 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:34,870 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:34,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:35,080 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:35,080 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:35,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -937903965, now seen corresponding path program 5 times [2024-02-19 15:11:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524207624] [2024-02-19 15:11:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:35,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:35,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524207624] [2024-02-19 15:11:35,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524207624] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43571129] [2024-02-19 15:11:35,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:11:35,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:35,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:35,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:35,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 15:11:35,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:11:35,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:35,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-19 15:11:35,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:35,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43571129] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:35,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:35,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-02-19 15:11:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829504101] [2024-02-19 15:11:35,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:35,295 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 15:11:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 15:11:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-02-19 15:11:35,296 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-02-19 15:11:35,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 813 transitions, 11234 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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) [2024-02-19 15:11:35,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:35,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-02-19 15:11:35,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:35,731 INFO L124 PetriNetUnfolderBase]: 1170/2141 cut-off events. [2024-02-19 15:11:35,732 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-02-19 15:11:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16044 conditions, 2141 events. 1170/2141 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12344 event pairs, 8 based on Foata normal form. 38/2179 useless extension candidates. Maximal degree in co-relation 15130. Up to 1504 conditions per place. [2024-02-19 15:11:35,754 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 538 selfloop transitions, 150 changer transitions 211/946 dead transitions. [2024-02-19 15:11:35,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 946 transitions, 14918 flow [2024-02-19 15:11:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:11:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:11:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-02-19 15:11:35,755 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-02-19 15:11:35,756 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 128 predicate places. [2024-02-19 15:11:35,756 INFO L507 AbstractCegarLoop]: Abstraction has has 152 places, 946 transitions, 14918 flow [2024-02-19 15:11:35,756 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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) [2024-02-19 15:11:35,756 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:35,757 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:35,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:35,972 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:35,972 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:35,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1315000077, now seen corresponding path program 6 times [2024-02-19 15:11:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465777212] [2024-02-19 15:11:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465777212] [2024-02-19 15:11:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465777212] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928694740] [2024-02-19 15:11:36,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:11:36,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:36,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:36,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:36,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 15:11:36,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:11:36,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:36,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:36,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:36,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928694740] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:36,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300983836] [2024-02-19 15:11:36,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:36,903 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:36,916 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:36,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 946 transitions, 14918 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:36,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:36,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:36,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:38,013 INFO L124 PetriNetUnfolderBase]: 1536/2823 cut-off events. [2024-02-19 15:11:38,013 INFO L125 PetriNetUnfolderBase]: For 2663/2663 co-relation queries the response was YES. [2024-02-19 15:11:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23985 conditions, 2823 events. 1536/2823 cut-off events. For 2663/2663 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17616 event pairs, 12 based on Foata normal form. 3/2826 useless extension candidates. Maximal degree in co-relation 22768. Up to 2005 conditions per place. [2024-02-19 15:11:38,048 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 628 selfloop transitions, 324 changer transitions 314/1267 dead transitions. [2024-02-19 15:11:38,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1267 transitions, 22491 flow [2024-02-19 15:11:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 15:11:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 15:11:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 195 transitions. [2024-02-19 15:11:38,051 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-02-19 15:11:38,052 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 148 predicate places. [2024-02-19 15:11:38,052 INFO L507 AbstractCegarLoop]: Abstraction has has 172 places, 1267 transitions, 22491 flow [2024-02-19 15:11:38,054 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:38,054 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:38,054 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:38,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:38,276 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:38,276 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:38,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1652436821, now seen corresponding path program 7 times [2024-02-19 15:11:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:38,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526281246] [2024-02-19 15:11:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526281246] [2024-02-19 15:11:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526281246] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626682456] [2024-02-19 15:11:38,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:11:38,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:38,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:38,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 15:11:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:38,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:38,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:38,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626682456] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:39,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115561701] [2024-02-19 15:11:39,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:39,069 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:39,084 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:39,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1267 transitions, 22491 flow. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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) [2024-02-19 15:11:39,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:39,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:39,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:40,489 INFO L124 PetriNetUnfolderBase]: 1653/3030 cut-off events. [2024-02-19 15:11:40,490 INFO L125 PetriNetUnfolderBase]: For 2840/2840 co-relation queries the response was YES. [2024-02-19 15:11:40,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28795 conditions, 3030 events. 1653/3030 cut-off events. For 2840/2840 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19025 event pairs, 12 based on Foata normal form. 2/3032 useless extension candidates. Maximal degree in co-relation 27437. Up to 2155 conditions per place. [2024-02-19 15:11:40,515 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 673 selfloop transitions, 380 changer transitions 364/1418 dead transitions. [2024-02-19 15:11:40,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1418 transitions, 27975 flow [2024-02-19 15:11:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 15:11:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 15:11:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 242 transitions. [2024-02-19 15:11:40,517 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-19 15:11:40,518 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2024-02-19 15:11:40,518 INFO L507 AbstractCegarLoop]: Abstraction has has 199 places, 1418 transitions, 27975 flow [2024-02-19 15:11:40,519 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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) [2024-02-19 15:11:40,519 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:40,519 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:40,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:40,738 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:40,739 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:40,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1364567821, now seen corresponding path program 8 times [2024-02-19 15:11:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:40,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528514264] [2024-02-19 15:11:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528514264] [2024-02-19 15:11:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528514264] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113877837] [2024-02-19 15:11:40,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:11:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:40,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:40,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:40,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 15:11:41,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:11:41,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:41,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:41,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:41,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:41,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113877837] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:41,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:41,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422822521] [2024-02-19 15:11:41,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:41,620 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:41,634 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1418 transitions, 27975 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:41,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:41,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:42,724 INFO L124 PetriNetUnfolderBase]: 1690/3110 cut-off events. [2024-02-19 15:11:42,725 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-02-19 15:11:42,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32670 conditions, 3110 events. 1690/3110 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19683 event pairs, 8 based on Foata normal form. 3/3113 useless extension candidates. Maximal degree in co-relation 31045. Up to 2215 conditions per place. [2024-02-19 15:11:42,797 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 701 selfloop transitions, 360 changer transitions 415/1477 dead transitions. [2024-02-19 15:11:42,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1477 transitions, 32070 flow [2024-02-19 15:11:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 15:11:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 15:11:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 184 transitions. [2024-02-19 15:11:42,798 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-02-19 15:11:42,799 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2024-02-19 15:11:42,799 INFO L507 AbstractCegarLoop]: Abstraction has has 217 places, 1477 transitions, 32070 flow [2024-02-19 15:11:42,799 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 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) [2024-02-19 15:11:42,799 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:42,799 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:42,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:43,008 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-19 15:11:43,009 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:43,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1602869077, now seen corresponding path program 9 times [2024-02-19 15:11:43,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:43,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414266331] [2024-02-19 15:11:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:43,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414266331] [2024-02-19 15:11:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414266331] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755824976] [2024-02-19 15:11:43,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:11:43,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:43,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:43,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:43,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 15:11:43,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:11:43,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:43,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:43,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:43,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755824976] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:43,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 15:11:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536312500] [2024-02-19 15:11:43,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:43,769 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:11:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:11:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:11:43,791 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:43,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1477 transitions, 32070 flow. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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) [2024-02-19 15:11:43,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:43,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:43,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:45,336 INFO L124 PetriNetUnfolderBase]: 1749/3235 cut-off events. [2024-02-19 15:11:45,337 INFO L125 PetriNetUnfolderBase]: For 3027/3027 co-relation queries the response was YES. [2024-02-19 15:11:45,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37233 conditions, 3235 events. 1749/3235 cut-off events. For 3027/3027 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20731 event pairs, 4 based on Foata normal form. 2/3237 useless extension candidates. Maximal degree in co-relation 35412. Up to 2320 conditions per place. [2024-02-19 15:11:45,365 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 711 selfloop transitions, 421 changer transitions 454/1587 dead transitions. [2024-02-19 15:11:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1587 transitions, 37622 flow [2024-02-19 15:11:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-19 15:11:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-19 15:11:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 300 transitions. [2024-02-19 15:11:45,371 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-02-19 15:11:45,371 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 226 predicate places. [2024-02-19 15:11:45,371 INFO L507 AbstractCegarLoop]: Abstraction has has 250 places, 1587 transitions, 37622 flow [2024-02-19 15:11:45,372 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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) [2024-02-19 15:11:45,372 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:45,372 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:45,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:45,586 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:45,586 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:45,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash -353106419, now seen corresponding path program 10 times [2024-02-19 15:11:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784487725] [2024-02-19 15:11:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784487725] [2024-02-19 15:11:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784487725] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312399372] [2024-02-19 15:11:45,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:11:45,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:45,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:45,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:45,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 15:11:45,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:11:45,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:45,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:11:45,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:46,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312399372] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:46,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-02-19 15:11:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860926779] [2024-02-19 15:11:46,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:46,362 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 15:11:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 15:11:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-02-19 15:11:46,388 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:46,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1587 transitions, 37622 flow. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2024-02-19 15:11:46,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:46,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:46,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:47,719 INFO L124 PetriNetUnfolderBase]: 1784/3307 cut-off events. [2024-02-19 15:11:47,719 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-02-19 15:11:47,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41391 conditions, 3307 events. 1784/3307 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 21398 event pairs, 0 based on Foata normal form. 1/3308 useless extension candidates. Maximal degree in co-relation 39408. Up to 2390 conditions per place. [2024-02-19 15:11:47,752 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 682 selfloop transitions, 501 changer transitions 459/1643 dead transitions. [2024-02-19 15:11:47,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1643 transitions, 42247 flow [2024-02-19 15:11:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 15:11:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 15:11:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 210 transitions. [2024-02-19 15:11:47,760 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-02-19 15:11:47,761 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 249 predicate places. [2024-02-19 15:11:47,761 INFO L507 AbstractCegarLoop]: Abstraction has has 273 places, 1643 transitions, 42247 flow [2024-02-19 15:11:47,761 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2024-02-19 15:11:47,761 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:47,761 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:47,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:47,976 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-19 15:11:47,977 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:47,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -404887773, now seen corresponding path program 11 times [2024-02-19 15:11:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:47,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783569416] [2024-02-19 15:11:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:47,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:48,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783569416] [2024-02-19 15:11:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783569416] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396624607] [2024-02-19 15:11:48,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:11:48,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:48,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:48,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 15:11:48,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:11:48,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:48,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:11:48,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:48,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396624607] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:48,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:48,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-02-19 15:11:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863169522] [2024-02-19 15:11:48,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:48,781 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-19 15:11:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-19 15:11:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-02-19 15:11:48,792 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:48,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1643 transitions, 42247 flow. Second operand has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 36 states have internal predecessors, (169), 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) [2024-02-19 15:11:48,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:48,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:51,724 INFO L124 PetriNetUnfolderBase]: 2027/3778 cut-off events. [2024-02-19 15:11:51,724 INFO L125 PetriNetUnfolderBase]: For 3838/3838 co-relation queries the response was YES. [2024-02-19 15:11:51,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51065 conditions, 3778 events. 2027/3778 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 24972 event pairs, 0 based on Foata normal form. 4/3782 useless extension candidates. Maximal degree in co-relation 48627. Up to 2761 conditions per place. [2024-02-19 15:11:51,755 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 847 selfloop transitions, 578 changer transitions 550/1976 dead transitions. [2024-02-19 15:11:51,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1976 transitions, 54762 flow [2024-02-19 15:11:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-02-19 15:11:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-02-19 15:11:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 519 transitions. [2024-02-19 15:11:51,757 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3998459167950693 [2024-02-19 15:11:51,758 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 307 predicate places. [2024-02-19 15:11:51,758 INFO L507 AbstractCegarLoop]: Abstraction has has 331 places, 1976 transitions, 54762 flow [2024-02-19 15:11:51,760 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 36 states have internal predecessors, (169), 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) [2024-02-19 15:11:51,760 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:51,760 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:51,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:51,968 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-19 15:11:51,968 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:51,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2014402433, now seen corresponding path program 12 times [2024-02-19 15:11:51,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:51,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874492759] [2024-02-19 15:11:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:51,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:52,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874492759] [2024-02-19 15:11:52,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874492759] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613292178] [2024-02-19 15:11:52,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:11:52,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:52,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:52,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 15:11:52,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:11:52,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:52,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:11:52,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:52,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613292178] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:52,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:11:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601572368] [2024-02-19 15:11:52,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:52,964 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:11:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:11:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:11:52,972 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:11:52,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1976 transitions, 54762 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:11:52,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:52,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:11:52,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:58,884 INFO L124 PetriNetUnfolderBase]: 3006/5567 cut-off events. [2024-02-19 15:11:58,885 INFO L125 PetriNetUnfolderBase]: For 5569/5569 co-relation queries the response was YES. [2024-02-19 15:11:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80761 conditions, 5567 events. 3006/5567 cut-off events. For 5569/5569 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38227 event pairs, 0 based on Foata normal form. 6/5573 useless extension candidates. Maximal degree in co-relation 77064. Up to 4160 conditions per place. [2024-02-19 15:11:58,929 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 1292 selfloop transitions, 1009 changer transitions 643/2945 dead transitions. [2024-02-19 15:11:58,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 2945 transitions, 87488 flow [2024-02-19 15:11:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-02-19 15:11:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2024-02-19 15:11:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 936 transitions. [2024-02-19 15:11:58,932 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37320574162679426 [2024-02-19 15:11:58,932 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 420 predicate places. [2024-02-19 15:11:58,932 INFO L507 AbstractCegarLoop]: Abstraction has has 444 places, 2945 transitions, 87488 flow [2024-02-19 15:11:58,933 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:11:58,933 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:58,933 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:58,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:59,133 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-19 15:11:59,133 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:11:59,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 539705669, now seen corresponding path program 13 times [2024-02-19 15:11:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:59,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325331] [2024-02-19 15:11:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:59,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325331] [2024-02-19 15:11:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325331] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485854918] [2024-02-19 15:11:59,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:11:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:59,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:59,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 15:11:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:59,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:11:59,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:11:59,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485854918] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:00,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407085569] [2024-02-19 15:12:00,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:00,245 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:00,262 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:00,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 2945 transitions, 87488 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:12:00,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:00,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:05,581 INFO L124 PetriNetUnfolderBase]: 3060/5694 cut-off events. [2024-02-19 15:12:05,582 INFO L125 PetriNetUnfolderBase]: For 5610/5610 co-relation queries the response was YES. [2024-02-19 15:12:05,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88311 conditions, 5694 events. 3060/5694 cut-off events. For 5610/5610 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39483 event pairs, 0 based on Foata normal form. 5/5699 useless extension candidates. Maximal degree in co-relation 84271. Up to 4258 conditions per place. [2024-02-19 15:12:05,628 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 1364 selfloop transitions, 956 changer transitions 701/3022 dead transitions. [2024-02-19 15:12:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 3022 transitions, 95869 flow [2024-02-19 15:12:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-02-19 15:12:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-02-19 15:12:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 693 transitions. [2024-02-19 15:12:05,632 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-02-19 15:12:05,632 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 499 predicate places. [2024-02-19 15:12:05,633 INFO L507 AbstractCegarLoop]: Abstraction has has 523 places, 3022 transitions, 95869 flow [2024-02-19 15:12:05,633 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:12:05,633 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:05,633 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:05,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:05,833 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-19 15:12:05,834 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:05,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2122444471, now seen corresponding path program 14 times [2024-02-19 15:12:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974011105] [2024-02-19 15:12:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974011105] [2024-02-19 15:12:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974011105] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572424262] [2024-02-19 15:12:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:12:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:06,075 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:06,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 15:12:06,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:12:06,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:06,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:12:06,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:06,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572424262] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:06,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908394290] [2024-02-19 15:12:06,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:06,844 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:06,856 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:06,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 3022 transitions, 95869 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:06,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:06,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:06,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:12,476 INFO L124 PetriNetUnfolderBase]: 3392/6315 cut-off events. [2024-02-19 15:12:12,476 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-02-19 15:12:12,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104247 conditions, 6315 events. 3392/6315 cut-off events. For 6414/6414 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44891 event pairs, 0 based on Foata normal form. 4/6319 useless extension candidates. Maximal degree in co-relation 99690. Up to 4751 conditions per place. [2024-02-19 15:12:12,536 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 1511 selfloop transitions, 1123 changer transitions 764/3399 dead transitions. [2024-02-19 15:12:12,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 3399 transitions, 114578 flow [2024-02-19 15:12:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-02-19 15:12:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-02-19 15:12:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 770 transitions. [2024-02-19 15:12:12,539 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2024-02-19 15:12:12,539 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 589 predicate places. [2024-02-19 15:12:12,539 INFO L507 AbstractCegarLoop]: Abstraction has has 613 places, 3399 transitions, 114578 flow [2024-02-19 15:12:12,540 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:12,540 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:12,540 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:12,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:12,752 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:12,752 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1040999717, now seen corresponding path program 15 times [2024-02-19 15:12:12,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:12,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031690997] [2024-02-19 15:12:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:12,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031690997] [2024-02-19 15:12:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031690997] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225631595] [2024-02-19 15:12:13,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:12:13,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:13,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:13,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 15:12:13,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:12:13,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:13,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:12:13,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:13,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225631595] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:13,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328754848] [2024-02-19 15:12:13,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:13,922 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:13,940 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:13,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 3399 transitions, 114578 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:13,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:13,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:13,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:19,888 INFO L124 PetriNetUnfolderBase]: 3723/6969 cut-off events. [2024-02-19 15:12:19,889 INFO L125 PetriNetUnfolderBase]: For 6667/6667 co-relation queries the response was YES. [2024-02-19 15:12:19,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122042 conditions, 6969 events. 3723/6969 cut-off events. For 6667/6667 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 50975 event pairs, 0 based on Foata normal form. 7/6976 useless extension candidates. Maximal degree in co-relation 116862. Up to 5294 conditions per place. [2024-02-19 15:12:19,959 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 1851 selfloop transitions, 1107 changer transitions 821/3780 dead transitions. [2024-02-19 15:12:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 3780 transitions, 135000 flow [2024-02-19 15:12:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-02-19 15:12:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-02-19 15:12:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 550 transitions. [2024-02-19 15:12:19,961 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-02-19 15:12:19,961 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 656 predicate places. [2024-02-19 15:12:19,961 INFO L507 AbstractCegarLoop]: Abstraction has has 680 places, 3780 transitions, 135000 flow [2024-02-19 15:12:19,962 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:19,962 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:19,962 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:19,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:20,172 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 15:12:20,172 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:20,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1718250591, now seen corresponding path program 16 times [2024-02-19 15:12:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:20,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209758676] [2024-02-19 15:12:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:20,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:20,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209758676] [2024-02-19 15:12:20,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209758676] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319492852] [2024-02-19 15:12:20,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:12:20,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:20,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:20,622 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:20,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 15:12:20,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:12:20,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:20,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:12:20,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:20,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319492852] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:21,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-02-19 15:12:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467152950] [2024-02-19 15:12:21,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:21,336 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-02-19 15:12:21,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-02-19 15:12:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-02-19 15:12:21,365 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:21,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 3780 transitions, 135000 flow. Second operand has 35 states, 35 states have (on average 4.742857142857143) internal successors, (166), 35 states have internal predecessors, (166), 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) [2024-02-19 15:12:21,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:21,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:21,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:30,237 INFO L124 PetriNetUnfolderBase]: 4220/7988 cut-off events. [2024-02-19 15:12:30,237 INFO L125 PetriNetUnfolderBase]: For 7736/7736 co-relation queries the response was YES. [2024-02-19 15:12:30,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147762 conditions, 7988 events. 4220/7988 cut-off events. For 7736/7736 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 60990 event pairs, 0 based on Foata normal form. 6/7994 useless extension candidates. Maximal degree in co-relation 141581. Up to 6117 conditions per place. [2024-02-19 15:12:30,312 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2043 selfloop transitions, 1438 changer transitions 906/4388 dead transitions. [2024-02-19 15:12:30,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 4388 transitions, 165534 flow [2024-02-19 15:12:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-02-19 15:12:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-02-19 15:12:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 755 transitions. [2024-02-19 15:12:30,314 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3730237154150198 [2024-02-19 15:12:30,314 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 747 predicate places. [2024-02-19 15:12:30,314 INFO L507 AbstractCegarLoop]: Abstraction has has 771 places, 4388 transitions, 165534 flow [2024-02-19 15:12:30,314 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.742857142857143) internal successors, (166), 35 states have internal predecessors, (166), 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) [2024-02-19 15:12:30,314 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:30,315 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:30,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:30,515 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 15:12:30,515 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -28934561, now seen corresponding path program 17 times [2024-02-19 15:12:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199212981] [2024-02-19 15:12:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199212981] [2024-02-19 15:12:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199212981] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151724715] [2024-02-19 15:12:30,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:12:30,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:30,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:30,759 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:30,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 15:12:30,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:12:30,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:30,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:12:30,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:31,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151724715] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:31,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:31,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066699610] [2024-02-19 15:12:31,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:31,484 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:31,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:31,502 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:31,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 4388 transitions, 165534 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:12:31,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:31,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:31,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:42,289 INFO L124 PetriNetUnfolderBase]: 4533/8636 cut-off events. [2024-02-19 15:12:42,289 INFO L125 PetriNetUnfolderBase]: For 8099/8099 co-relation queries the response was YES. [2024-02-19 15:12:42,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168204 conditions, 8636 events. 4533/8636 cut-off events. For 8099/8099 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67409 event pairs, 0 based on Foata normal form. 5/8641 useless extension candidates. Maximal degree in co-relation 161076. Up to 6620 conditions per place. [2024-02-19 15:12:42,376 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2374 selfloop transitions, 1411 changer transitions 969/4755 dead transitions. [2024-02-19 15:12:42,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 4755 transitions, 188918 flow [2024-02-19 15:12:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-02-19 15:12:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-02-19 15:12:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 805 transitions. [2024-02-19 15:12:42,378 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36960514233241504 [2024-02-19 15:12:42,379 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 845 predicate places. [2024-02-19 15:12:42,379 INFO L507 AbstractCegarLoop]: Abstraction has has 869 places, 4755 transitions, 188918 flow [2024-02-19 15:12:42,379 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:12:42,379 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:42,379 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:42,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-19 15:12:42,579 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:42,580 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:42,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1937810275, now seen corresponding path program 18 times [2024-02-19 15:12:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678683630] [2024-02-19 15:12:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678683630] [2024-02-19 15:12:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678683630] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258867215] [2024-02-19 15:12:42,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:12:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:42,780 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:42,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 15:12:42,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-19 15:12:42,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:42,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:12:42,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:43,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258867215] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:43,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:43,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:43,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759606262] [2024-02-19 15:12:43,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:43,483 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:43,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:43,490 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:43,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 869 places, 4755 transitions, 188918 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:43,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:43,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:43,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:53,391 INFO L124 PetriNetUnfolderBase]: 4542/8669 cut-off events. [2024-02-19 15:12:53,391 INFO L125 PetriNetUnfolderBase]: For 8195/8195 co-relation queries the response was YES. [2024-02-19 15:12:53,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177526 conditions, 8669 events. 4542/8669 cut-off events. For 8195/8195 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 67824 event pairs, 0 based on Foata normal form. 7/8676 useless extension candidates. Maximal degree in co-relation 170029. Up to 6648 conditions per place. [2024-02-19 15:12:53,496 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 2464 selfloop transitions, 1322 changer transitions 1004/4791 dead transitions. [2024-02-19 15:12:53,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 911 places, 4791 transitions, 199938 flow [2024-02-19 15:12:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-02-19 15:12:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-02-19 15:12:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 371 transitions. [2024-02-19 15:12:53,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39217758985200846 [2024-02-19 15:12:53,499 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 887 predicate places. [2024-02-19 15:12:53,499 INFO L507 AbstractCegarLoop]: Abstraction has has 911 places, 4791 transitions, 199938 flow [2024-02-19 15:12:53,499 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:12:53,499 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:53,499 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:53,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:53,712 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:53,713 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:12:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash 835213983, now seen corresponding path program 19 times [2024-02-19 15:12:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668313703] [2024-02-19 15:12:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:53,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:53,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668313703] [2024-02-19 15:12:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668313703] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297411202] [2024-02-19 15:12:53,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:12:53,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:53,952 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:53,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 15:12:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:54,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:12:54,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:54,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:12:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297411202] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:54,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:54,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:12:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239695087] [2024-02-19 15:12:54,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:54,784 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:12:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:12:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:12:54,800 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:12:54,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 4791 transitions, 199938 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:12:54,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:54,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:12:54,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:07,941 INFO L124 PetriNetUnfolderBase]: 4910/9371 cut-off events. [2024-02-19 15:13:07,942 INFO L125 PetriNetUnfolderBase]: For 8862/8862 co-relation queries the response was YES. [2024-02-19 15:13:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201127 conditions, 9371 events. 4910/9371 cut-off events. For 8862/8862 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 74198 event pairs, 0 based on Foata normal form. 14/9385 useless extension candidates. Maximal degree in co-relation 192799. Up to 7191 conditions per place. [2024-02-19 15:13:08,064 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2572 selfloop transitions, 1493 changer transitions 1103/5169 dead transitions. [2024-02-19 15:13:08,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 5169 transitions, 226085 flow [2024-02-19 15:13:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-02-19 15:13:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2024-02-19 15:13:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 749 transitions. [2024-02-19 15:13:08,066 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3782828282828283 [2024-02-19 15:13:08,066 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 966 predicate places. [2024-02-19 15:13:08,066 INFO L507 AbstractCegarLoop]: Abstraction has has 990 places, 5169 transitions, 226085 flow [2024-02-19 15:13:08,067 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:13:08,067 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:08,067 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:08,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-19 15:13:08,267 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:08,267 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:13:08,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 688047617, now seen corresponding path program 20 times [2024-02-19 15:13:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882356775] [2024-02-19 15:13:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882356775] [2024-02-19 15:13:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882356775] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931764410] [2024-02-19 15:13:08,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:13:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:08,693 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:08,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 15:13:08,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:13:08,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:13:08,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:13:08,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:09,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:09,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931764410] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:09,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:13:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203828879] [2024-02-19 15:13:09,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:09,405 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:13:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:13:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:13:09,418 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:13:09,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 5169 transitions, 226085 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:13:09,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:09,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:13:09,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:22,791 INFO L124 PetriNetUnfolderBase]: 4919/9390 cut-off events. [2024-02-19 15:13:22,792 INFO L125 PetriNetUnfolderBase]: For 8628/8628 co-relation queries the response was YES. [2024-02-19 15:13:22,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210946 conditions, 9390 events. 4919/9390 cut-off events. For 8628/8628 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 74359 event pairs, 0 based on Foata normal form. 3/9393 useless extension candidates. Maximal degree in co-relation 202273. Up to 7211 conditions per place. [2024-02-19 15:13:22,906 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 2474 selfloop transitions, 1584 changer transitions 1130/5189 dead transitions. [2024-02-19 15:13:22,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 5189 transitions, 237345 flow [2024-02-19 15:13:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-02-19 15:13:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-02-19 15:13:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 720 transitions. [2024-02-19 15:13:22,908 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3761755485893417 [2024-02-19 15:13:22,908 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1051 predicate places. [2024-02-19 15:13:22,908 INFO L507 AbstractCegarLoop]: Abstraction has has 1075 places, 5189 transitions, 237345 flow [2024-02-19 15:13:22,908 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:13:22,908 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:22,908 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:22,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-19 15:13:23,109 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-19 15:13:23,109 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:13:23,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1249186307, now seen corresponding path program 21 times [2024-02-19 15:13:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218406065] [2024-02-19 15:13:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:23,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218406065] [2024-02-19 15:13:23,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218406065] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768725857] [2024-02-19 15:13:23,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:13:23,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:23,323 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:23,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 15:13:23,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:13:23,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:13:23,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:13:23,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:23,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:24,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768725857] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:24,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:24,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:13:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093041181] [2024-02-19 15:13:24,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:24,016 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:13:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:13:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:13:24,037 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:13:24,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1075 places, 5189 transitions, 237345 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:13:24,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:24,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:13:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:39,841 INFO L124 PetriNetUnfolderBase]: 4976/9496 cut-off events. [2024-02-19 15:13:39,841 INFO L125 PetriNetUnfolderBase]: For 8869/8869 co-relation queries the response was YES. [2024-02-19 15:13:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222917 conditions, 9496 events. 4976/9496 cut-off events. For 8869/8869 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 75338 event pairs, 0 based on Foata normal form. 7/9503 useless extension candidates. Maximal degree in co-relation 213926. Up to 7306 conditions per place. [2024-02-19 15:13:39,961 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2556 selfloop transitions, 1540 changer transitions 1169/5266 dead transitions. [2024-02-19 15:13:39,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1158 places, 5266 transitions, 251408 flow [2024-02-19 15:13:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-02-19 15:13:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-02-19 15:13:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 722 transitions. [2024-02-19 15:13:39,964 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.386096256684492 [2024-02-19 15:13:39,964 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1134 predicate places. [2024-02-19 15:13:39,964 INFO L507 AbstractCegarLoop]: Abstraction has has 1158 places, 5266 transitions, 251408 flow [2024-02-19 15:13:39,964 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:13:39,965 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:39,965 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:39,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-19 15:13:40,176 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-19 15:13:40,177 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:13:40,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash 28307687, now seen corresponding path program 22 times [2024-02-19 15:13:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:40,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461955661] [2024-02-19 15:13:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:40,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461955661] [2024-02-19 15:13:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461955661] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:40,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602678269] [2024-02-19 15:13:40,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:13:40,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:40,382 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:40,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 15:13:40,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:13:40,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:13:40,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:13:40,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:40,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602678269] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:41,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:13:41,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179965793] [2024-02-19 15:13:41,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:41,161 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:13:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:13:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:13:41,175 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:13:41,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1158 places, 5266 transitions, 251408 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:13:41,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:41,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:13:41,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:56,611 INFO L124 PetriNetUnfolderBase]: 5450/10392 cut-off events. [2024-02-19 15:13:56,611 INFO L125 PetriNetUnfolderBase]: For 9662/9662 co-relation queries the response was YES. [2024-02-19 15:13:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254286 conditions, 10392 events. 5450/10392 cut-off events. For 9662/9662 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83872 event pairs, 0 based on Foata normal form. 4/10396 useless extension candidates. Maximal degree in co-relation 244409. Up to 8030 conditions per place. [2024-02-19 15:13:56,739 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3006 selfloop transitions, 1534 changer transitions 1233/5774 dead transitions. [2024-02-19 15:13:56,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1226 places, 5774 transitions, 287202 flow [2024-02-19 15:13:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-02-19 15:13:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-02-19 15:13:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 609 transitions. [2024-02-19 15:13:56,742 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40118577075098816 [2024-02-19 15:13:56,742 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1202 predicate places. [2024-02-19 15:13:56,743 INFO L507 AbstractCegarLoop]: Abstraction has has 1226 places, 5774 transitions, 287202 flow [2024-02-19 15:13:56,743 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:13:56,743 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:56,743 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:56,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-19 15:13:56,958 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:56,958 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:13:56,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash -854728921, now seen corresponding path program 23 times [2024-02-19 15:13:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067626829] [2024-02-19 15:13:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067626829] [2024-02-19 15:13:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067626829] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671080620] [2024-02-19 15:13:57,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:13:57,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:57,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:57,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 15:13:57,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:13:57,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:13:57,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:13:57,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:57,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671080620] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:57,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:13:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640866962] [2024-02-19 15:13:57,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:57,911 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:13:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:13:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:13:57,920 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:13:57,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1226 places, 5774 transitions, 287202 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:13:57,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:57,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:13:57,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:14:20,132 INFO L124 PetriNetUnfolderBase]: 5901/11328 cut-off events. [2024-02-19 15:14:20,133 INFO L125 PetriNetUnfolderBase]: For 10517/10517 co-relation queries the response was YES. [2024-02-19 15:14:20,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288197 conditions, 11328 events. 5901/11328 cut-off events. For 10517/10517 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 93749 event pairs, 0 based on Foata normal form. 12/11340 useless extension candidates. Maximal degree in co-relation 276618. Up to 8755 conditions per place. [2024-02-19 15:14:20,279 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3180 selfloop transitions, 1789 changer transitions 1327/6297 dead transitions. [2024-02-19 15:14:20,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1310 places, 6297 transitions, 325812 flow [2024-02-19 15:14:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-02-19 15:14:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-02-19 15:14:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 737 transitions. [2024-02-19 15:14:20,281 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-02-19 15:14:20,282 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1286 predicate places. [2024-02-19 15:14:20,282 INFO L507 AbstractCegarLoop]: Abstraction has has 1310 places, 6297 transitions, 325812 flow [2024-02-19 15:14:20,282 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:14:20,282 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:14:20,282 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:14:20,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 15:14:20,503 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:14:20,503 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:14:20,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:14:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1720177421, now seen corresponding path program 24 times [2024-02-19 15:14:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:14:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732912083] [2024-02-19 15:14:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:14:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:14:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:20,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:14:20,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732912083] [2024-02-19 15:14:20,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732912083] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:14:20,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282174088] [2024-02-19 15:14:20,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:14:20,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:14:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:14:20,716 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:14:20,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 15:14:20,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:14:20,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:14:20,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:14:20,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:14:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:21,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:14:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:21,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282174088] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:14:21,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:14:21,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:14:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284926102] [2024-02-19 15:14:21,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:14:21,372 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:14:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:14:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:14:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:14:21,385 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:14:21,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1310 places, 6297 transitions, 325812 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:14:21,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:14:21,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:14:21,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:14:50,510 INFO L124 PetriNetUnfolderBase]: 6424/12372 cut-off events. [2024-02-19 15:14:50,510 INFO L125 PetriNetUnfolderBase]: For 11450/11450 co-relation queries the response was YES. [2024-02-19 15:14:50,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327018 conditions, 12372 events. 6424/12372 cut-off events. For 11450/11450 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 104560 event pairs, 0 based on Foata normal form. 22/12394 useless extension candidates. Maximal degree in co-relation 313996. Up to 9578 conditions per place. [2024-02-19 15:14:50,678 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3290 selfloop transitions, 2166 changer transitions 1445/6902 dead transitions. [2024-02-19 15:14:50,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1415 places, 6902 transitions, 370866 flow [2024-02-19 15:14:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-02-19 15:14:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2024-02-19 15:14:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 870 transitions. [2024-02-19 15:14:50,681 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3695836873406967 [2024-02-19 15:14:50,681 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1391 predicate places. [2024-02-19 15:14:50,682 INFO L507 AbstractCegarLoop]: Abstraction has has 1415 places, 6902 transitions, 370866 flow [2024-02-19 15:14:50,682 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:14:50,682 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:14:50,682 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:14:50,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-19 15:14:50,892 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-19 15:14:50,893 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:14:50,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:14:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 186847147, now seen corresponding path program 25 times [2024-02-19 15:14:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:14:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053814583] [2024-02-19 15:14:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:14:50,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:14:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:14:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053814583] [2024-02-19 15:14:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053814583] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:14:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230097740] [2024-02-19 15:14:51,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:14:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:14:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:14:51,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:14:51,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-19 15:14:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:51,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:14:51,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:14:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:51,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:14:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230097740] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:14:51,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:14:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:14:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626991912] [2024-02-19 15:14:51,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:14:51,939 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:14:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:14:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:14:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:14:51,974 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:14:51,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1415 places, 6902 transitions, 370866 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:14:51,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:14:51,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:14:51,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:15:27,538 INFO L124 PetriNetUnfolderBase]: 6679/12900 cut-off events. [2024-02-19 15:15:27,539 INFO L125 PetriNetUnfolderBase]: For 11645/11645 co-relation queries the response was YES. [2024-02-19 15:15:27,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353573 conditions, 12900 events. 6679/12900 cut-off events. For 11645/11645 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 110257 event pairs, 0 based on Foata normal form. 5/12905 useless extension candidates. Maximal degree in co-relation 339268. Up to 9979 conditions per place. [2024-02-19 15:15:27,713 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3876 selfloop transitions, 1847 changer transitions 1490/7214 dead transitions. [2024-02-19 15:15:27,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1493 places, 7214 transitions, 402053 flow [2024-02-19 15:15:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-02-19 15:15:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-02-19 15:15:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 664 transitions. [2024-02-19 15:15:27,714 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38204833141542005 [2024-02-19 15:15:27,715 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1469 predicate places. [2024-02-19 15:15:27,715 INFO L507 AbstractCegarLoop]: Abstraction has has 1493 places, 7214 transitions, 402053 flow [2024-02-19 15:15:27,715 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:15:27,715 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:15:27,715 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:15:27,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-19 15:15:27,915 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-19 15:15:27,915 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:15:27,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:15:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1325027217, now seen corresponding path program 26 times [2024-02-19 15:15:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:15:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850384409] [2024-02-19 15:15:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:15:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:15:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:15:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:15:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:15:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850384409] [2024-02-19 15:15:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850384409] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:15:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242582690] [2024-02-19 15:15:28,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:15:28,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:15:28,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:15:28,090 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:15:28,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-19 15:15:28,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:15:28,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:15:28,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:15:28,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:15:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:15:28,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:15:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:15:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242582690] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:15:28,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:15:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:15:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119446532] [2024-02-19 15:15:28,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:15:28,757 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:15:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:15:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:15:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:15:28,770 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:15:28,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1493 places, 7214 transitions, 402053 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:15:28,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:15:28,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:15:28,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:15:59,796 INFO L124 PetriNetUnfolderBase]: 6690/12938 cut-off events. [2024-02-19 15:15:59,796 INFO L125 PetriNetUnfolderBase]: For 11732/11732 co-relation queries the response was YES. [2024-02-19 15:15:59,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367533 conditions, 12938 events. 6690/12938 cut-off events. For 11732/11732 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 110846 event pairs, 0 based on Foata normal form. 5/12943 useless extension candidates. Maximal degree in co-relation 352699. Up to 10013 conditions per place. [2024-02-19 15:15:59,985 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3789 selfloop transitions, 1954 changer transitions 1515/7259 dead transitions. [2024-02-19 15:15:59,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1544 places, 7259 transitions, 419083 flow [2024-02-19 15:15:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-02-19 15:15:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-02-19 15:15:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 439 transitions. [2024-02-19 15:15:59,986 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3765008576329331 [2024-02-19 15:15:59,987 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1520 predicate places. [2024-02-19 15:15:59,987 INFO L507 AbstractCegarLoop]: Abstraction has has 1544 places, 7259 transitions, 419083 flow [2024-02-19 15:15:59,987 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:15:59,987 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:15:59,987 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:16:00,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-19 15:16:00,200 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-19 15:16:00,201 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:16:00,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1689366553, now seen corresponding path program 27 times [2024-02-19 15:16:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068066386] [2024-02-19 15:16:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068066386] [2024-02-19 15:16:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068066386] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:16:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640795495] [2024-02-19 15:16:00,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:16:00,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:16:00,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:16:00,429 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:16:00,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-19 15:16:00,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:16:00,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:16:00,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:16:00,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:16:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:00,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:16:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640795495] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:16:01,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:16:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:16:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845043308] [2024-02-19 15:16:01,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:16:01,190 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:16:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:16:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:16:01,205 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:16:01,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1544 places, 7259 transitions, 419083 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:16:01,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:01,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:16:01,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:38,298 INFO L124 PetriNetUnfolderBase]: 6710/12996 cut-off events. [2024-02-19 15:16:38,298 INFO L125 PetriNetUnfolderBase]: For 12019/12019 co-relation queries the response was YES. [2024-02-19 15:16:38,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382225 conditions, 12996 events. 6710/12996 cut-off events. For 12019/12019 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 111677 event pairs, 0 based on Foata normal form. 6/13002 useless extension candidates. Maximal degree in co-relation 366829. Up to 10061 conditions per place. [2024-02-19 15:16:38,497 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3766 selfloop transitions, 1963 changer transitions 1571/7301 dead transitions. [2024-02-19 15:16:38,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1609 places, 7301 transitions, 436137 flow [2024-02-19 15:16:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-02-19 15:16:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-02-19 15:16:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 536 transitions. [2024-02-19 15:16:38,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-02-19 15:16:38,499 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1585 predicate places. [2024-02-19 15:16:38,499 INFO L507 AbstractCegarLoop]: Abstraction has has 1609 places, 7301 transitions, 436137 flow [2024-02-19 15:16:38,499 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:16:38,499 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:38,499 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:16:38,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-02-19 15:16:38,704 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-19 15:16:38,704 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:16:38,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -249316061, now seen corresponding path program 28 times [2024-02-19 15:16:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942477397] [2024-02-19 15:16:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942477397] [2024-02-19 15:16:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942477397] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:16:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606682965] [2024-02-19 15:16:38,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:16:38,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:16:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:16:38,870 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:16:38,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-02-19 15:16:38,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:16:38,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:16:38,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:16:38,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:16:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:39,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:16:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606682965] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:16:39,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:16:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:16:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912396917] [2024-02-19 15:16:39,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:16:39,610 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:16:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:16:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:16:39,625 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:16:39,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1609 places, 7301 transitions, 436137 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:16:39,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:39,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:16:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:17:15,631 INFO L124 PetriNetUnfolderBase]: 7010/13758 cut-off events. [2024-02-19 15:17:15,631 INFO L125 PetriNetUnfolderBase]: For 12699/12699 co-relation queries the response was YES. [2024-02-19 15:17:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418751 conditions, 13758 events. 7010/13758 cut-off events. For 12699/12699 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 121202 event pairs, 0 based on Foata normal form. 3/13761 useless extension candidates. Maximal degree in co-relation 402277. Up to 10769 conditions per place. [2024-02-19 15:17:15,835 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3962 selfloop transitions, 2023 changer transitions 1785/7771 dead transitions. [2024-02-19 15:17:15,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1663 places, 7771 transitions, 480126 flow [2024-02-19 15:17:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-02-19 15:17:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-02-19 15:17:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 449 transitions. [2024-02-19 15:17:15,837 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37107438016528926 [2024-02-19 15:17:15,838 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1639 predicate places. [2024-02-19 15:17:15,838 INFO L507 AbstractCegarLoop]: Abstraction has has 1663 places, 7771 transitions, 480126 flow [2024-02-19 15:17:15,838 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:17:15,838 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:17:15,838 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:17:15,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-02-19 15:17:16,053 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:17:16,053 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:17:16,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:17:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1889727617, now seen corresponding path program 29 times [2024-02-19 15:17:16,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:17:16,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47226155] [2024-02-19 15:17:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:17:16,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:17:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:17:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:17:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47226155] [2024-02-19 15:17:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47226155] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:17:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089182784] [2024-02-19 15:17:16,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:17:16,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:17:16,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:17:16,269 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:17:16,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-02-19 15:17:16,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:17:16,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:17:16,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:17:16,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:17:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:16,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:17:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:16,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089182784] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:17:16,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:17:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-02-19 15:17:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102659591] [2024-02-19 15:17:16,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:17:16,878 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-19 15:17:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:17:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-19 15:17:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2024-02-19 15:17:16,899 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:17:16,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1663 places, 7771 transitions, 480126 flow. Second operand has 36 states, 36 states have (on average 4.638888888888889) internal successors, (167), 36 states have internal predecessors, (167), 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) [2024-02-19 15:17:16,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:17:16,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:17:16,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:18:01,804 INFO L124 PetriNetUnfolderBase]: 7819/15305 cut-off events. [2024-02-19 15:18:01,805 INFO L125 PetriNetUnfolderBase]: For 13899/13899 co-relation queries the response was YES. [2024-02-19 15:18:01,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481035 conditions, 15305 events. 7819/15305 cut-off events. For 13899/13899 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 136834 event pairs, 0 based on Foata normal form. 58/15363 useless extension candidates. Maximal degree in co-relation 462556. Up to 11987 conditions per place. [2024-02-19 15:18:02,037 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 4140 selfloop transitions, 2575 changer transitions 2000/8716 dead transitions. [2024-02-19 15:18:02,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1762 places, 8716 transitions, 555889 flow [2024-02-19 15:18:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-02-19 15:18:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2024-02-19 15:18:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 835 transitions. [2024-02-19 15:18:02,039 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3721033868092692 [2024-02-19 15:18:02,040 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1738 predicate places. [2024-02-19 15:18:02,040 INFO L507 AbstractCegarLoop]: Abstraction has has 1762 places, 8716 transitions, 555889 flow [2024-02-19 15:18:02,040 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.638888888888889) internal successors, (167), 36 states have internal predecessors, (167), 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) [2024-02-19 15:18:02,041 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:18:02,041 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:18:02,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-02-19 15:18:02,257 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:18:02,258 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:18:02,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:18:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1537182835, now seen corresponding path program 30 times [2024-02-19 15:18:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:18:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772394066] [2024-02-19 15:18:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:18:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:18:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:18:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:18:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772394066] [2024-02-19 15:18:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772394066] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:18:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677526893] [2024-02-19 15:18:02,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:18:02,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:18:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:18:02,443 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:18:02,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-02-19 15:18:02,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-19 15:18:02,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:18:02,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:18:02,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:18:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:02,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:18:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677526893] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:18:03,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:18:03,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:18:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189239062] [2024-02-19 15:18:03,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:18:03,137 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:18:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:18:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:18:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:18:03,147 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:18:03,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1762 places, 8716 transitions, 555889 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:18:03,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:18:03,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:18:03,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:18:57,831 INFO L124 PetriNetUnfolderBase]: 7953/15605 cut-off events. [2024-02-19 15:18:57,831 INFO L125 PetriNetUnfolderBase]: For 14008/14008 co-relation queries the response was YES. [2024-02-19 15:18:57,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506045 conditions, 15605 events. 7953/15605 cut-off events. For 14008/14008 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 140179 event pairs, 0 based on Foata normal form. 10/15615 useless extension candidates. Maximal degree in co-relation 486661. Up to 12239 conditions per place. [2024-02-19 15:18:58,271 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4594 selfloop transitions, 2268 changer transitions 2050/8913 dead transitions. [2024-02-19 15:18:58,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1828 places, 8913 transitions, 586267 flow [2024-02-19 15:18:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-02-19 15:18:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-02-19 15:18:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 514 transitions. [2024-02-19 15:18:58,272 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3487109905020353 [2024-02-19 15:18:58,273 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1804 predicate places. [2024-02-19 15:18:58,273 INFO L507 AbstractCegarLoop]: Abstraction has has 1828 places, 8913 transitions, 586267 flow [2024-02-19 15:18:58,273 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:18:58,273 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:18:58,273 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:18:58,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-02-19 15:18:58,474 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-02-19 15:18:58,474 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:18:58,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:18:58,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2102725885, now seen corresponding path program 31 times [2024-02-19 15:18:58,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:18:58,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271987023] [2024-02-19 15:18:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:18:58,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:18:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:18:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:18:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271987023] [2024-02-19 15:18:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271987023] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:18:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151907674] [2024-02-19 15:18:58,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:18:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:18:58,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:18:58,638 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:18:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-02-19 15:18:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:18:58,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:18:58,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:18:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:58,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:18:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:18:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151907674] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:18:59,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:18:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:18:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123269976] [2024-02-19 15:18:59,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:18:59,320 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:18:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:18:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:18:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:18:59,331 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:18:59,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1828 places, 8913 transitions, 586267 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:18:59,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:18:59,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:18:59,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:20:03,180 INFO L124 PetriNetUnfolderBase]: 8042/15798 cut-off events. [2024-02-19 15:20:03,180 INFO L125 PetriNetUnfolderBase]: For 14177/14177 co-relation queries the response was YES. [2024-02-19 15:20:03,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528078 conditions, 15798 events. 8042/15798 cut-off events. For 14177/14177 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 142386 event pairs, 0 based on Foata normal form. 11/15809 useless extension candidates. Maximal degree in co-relation 508049. Up to 12392 conditions per place. [2024-02-19 15:20:03,459 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4547 selfloop transitions, 2396 changer transitions 2088/9032 dead transitions. [2024-02-19 15:20:03,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1908 places, 9032 transitions, 612108 flow [2024-02-19 15:20:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-02-19 15:20:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-02-19 15:20:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 592 transitions. [2024-02-19 15:20:03,460 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33221099887766553 [2024-02-19 15:20:03,461 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1884 predicate places. [2024-02-19 15:20:03,461 INFO L507 AbstractCegarLoop]: Abstraction has has 1908 places, 9032 transitions, 612108 flow [2024-02-19 15:20:03,461 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:20:03,461 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:20:03,461 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:20:03,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-02-19 15:20:03,678 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:20:03,679 INFO L432 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:20:03,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:20:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1596379619, now seen corresponding path program 32 times [2024-02-19 15:20:03,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:20:03,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514735893] [2024-02-19 15:20:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:20:03,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:20:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:20:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:20:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:20:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514735893] [2024-02-19 15:20:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514735893] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:20:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34426106] [2024-02-19 15:20:03,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:20:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:20:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:20:03,850 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:20:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-02-19 15:20:03,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:20:03,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:20:03,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:20:03,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:20:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:20:04,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:20:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:20:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34426106] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:20:04,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:20:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:20:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909085329] [2024-02-19 15:20:04,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:20:04,494 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:20:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:20:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:20:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:20:04,511 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:20:04,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1908 places, 9032 transitions, 612108 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:20:04,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:20:04,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:20:04,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:21:11,276 INFO L124 PetriNetUnfolderBase]: 8055/15847 cut-off events. [2024-02-19 15:21:11,276 INFO L125 PetriNetUnfolderBase]: For 14196/14196 co-relation queries the response was YES. [2024-02-19 15:21:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545522 conditions, 15847 events. 8055/15847 cut-off events. For 14196/14196 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 143225 event pairs, 0 based on Foata normal form. 5/15852 useless extension candidates. Maximal degree in co-relation 524808. Up to 12434 conditions per place. [2024-02-19 15:21:11,542 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4708 selfloop transitions, 2251 changer transitions 2113/9073 dead transitions. [2024-02-19 15:21:11,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1952 places, 9073 transitions, 633040 flow [2024-02-19 15:21:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-02-19 15:21:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-02-19 15:21:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 349 transitions. [2024-02-19 15:21:11,544 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3525252525252525 [2024-02-19 15:21:11,545 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1928 predicate places. [2024-02-19 15:21:11,545 INFO L507 AbstractCegarLoop]: Abstraction has has 1952 places, 9073 transitions, 633040 flow [2024-02-19 15:21:11,545 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:21:11,545 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:21:11,545 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:21:11,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-02-19 15:21:11,756 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:21:11,756 INFO L432 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:21:11,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:21:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash -26648741, now seen corresponding path program 33 times [2024-02-19 15:21:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:21:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490062910] [2024-02-19 15:21:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:21:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:21:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:21:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:21:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:21:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490062910] [2024-02-19 15:21:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490062910] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:21:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079347914] [2024-02-19 15:21:11,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:21:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:21:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:21:11,984 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:21:11,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-02-19 15:21:12,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:21:12,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:21:12,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:21:12,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:21:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:21:12,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:21:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:21:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079347914] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:21:12,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:21:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:21:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456974629] [2024-02-19 15:21:12,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:21:12,690 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:21:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:21:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:21:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:21:12,708 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:21:12,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1952 places, 9073 transitions, 633040 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:21:12,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:21:12,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:21:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:22:22,300 INFO L124 PetriNetUnfolderBase]: 8543/16854 cut-off events. [2024-02-19 15:22:22,300 INFO L125 PetriNetUnfolderBase]: For 14951/14951 co-relation queries the response was YES. [2024-02-19 15:22:22,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596694 conditions, 16854 events. 8543/16854 cut-off events. For 14951/14951 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 154605 event pairs, 0 based on Foata normal form. 13/16867 useless extension candidates. Maximal degree in co-relation 573809. Up to 13219 conditions per place. [2024-02-19 15:22:22,609 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 4836 selfloop transitions, 2588 changer transitions 2245/9670 dead transitions. [2024-02-19 15:22:22,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2038 places, 9670 transitions, 693958 flow [2024-02-19 15:22:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-02-19 15:22:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-02-19 15:22:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 714 transitions. [2024-02-19 15:22:22,611 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3730407523510972 [2024-02-19 15:22:22,611 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 2014 predicate places. [2024-02-19 15:22:22,612 INFO L507 AbstractCegarLoop]: Abstraction has has 2038 places, 9670 transitions, 693958 flow [2024-02-19 15:22:22,612 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 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) [2024-02-19 15:22:22,612 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:22:22,612 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:22:22,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-02-19 15:22:22,820 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-02-19 15:22:22,820 INFO L432 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:22:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:22:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash -221025531, now seen corresponding path program 34 times [2024-02-19 15:22:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:22:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294221498] [2024-02-19 15:22:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:22:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:22:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:22:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:22:23,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:22:23,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294221498] [2024-02-19 15:22:23,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294221498] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:22:23,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504638762] [2024-02-19 15:22:23,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:22:23,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:22:23,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:22:23,003 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:22:23,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-02-19 15:22:23,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:22:23,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:22:23,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-19 15:22:23,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:22:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:22:23,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:22:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:22:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504638762] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:22:23,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:22:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-19 15:22:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699804625] [2024-02-19 15:22:23,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:22:23,726 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-19 15:22:23,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:22:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-19 15:22:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2024-02-19 15:22:23,731 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:22:23,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2038 places, 9670 transitions, 693958 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:22:23,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:22:23,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:22:23,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:23:49,706 INFO L124 PetriNetUnfolderBase]: 9012/17795 cut-off events. [2024-02-19 15:23:49,706 INFO L125 PetriNetUnfolderBase]: For 15638/15638 co-relation queries the response was YES. [2024-02-19 15:23:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647537 conditions, 17795 events. 9012/17795 cut-off events. For 15638/15638 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 164978 event pairs, 0 based on Foata normal form. 14/17809 useless extension candidates. Maximal degree in co-relation 622775. Up to 13959 conditions per place. [2024-02-19 15:23:50,051 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 5162 selfloop transitions, 2723 changer transitions 2324/10210 dead transitions. [2024-02-19 15:23:50,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2130 places, 10210 transitions, 753048 flow [2024-02-19 15:23:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-02-19 15:23:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2024-02-19 15:23:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 716 transitions. [2024-02-19 15:23:50,053 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34995112414467255 [2024-02-19 15:23:50,053 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 2106 predicate places. [2024-02-19 15:23:50,054 INFO L507 AbstractCegarLoop]: Abstraction has has 2130 places, 10210 transitions, 753048 flow [2024-02-19 15:23:50,054 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 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) [2024-02-19 15:23:50,054 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:23:50,054 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:23:50,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-02-19 15:23:50,262 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-02-19 15:23:50,262 INFO L432 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:23:50,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:23:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1677571999, now seen corresponding path program 35 times [2024-02-19 15:23:50,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:23:50,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925697015] [2024-02-19 15:23:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:23:50,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:23:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:23:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:23:50,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:23:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925697015] [2024-02-19 15:23:50,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925697015] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:23:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443891769] [2024-02-19 15:23:50,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:23:50,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:23:50,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:23:50,445 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:23:50,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-02-19 15:23:50,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:23:50,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:23:50,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:23:50,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:23:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:23:50,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:23:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:23:51,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443891769] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:23:51,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:23:51,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-02-19 15:23:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71432879] [2024-02-19 15:23:51,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:23:51,032 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-19 15:23:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:23:51,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-19 15:23:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2024-02-19 15:23:51,049 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-19 15:23:51,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2130 places, 10210 transitions, 753048 flow. Second operand has 36 states, 36 states have (on average 4.638888888888889) internal successors, (167), 36 states have internal predecessors, (167), 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) [2024-02-19 15:23:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:23:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-19 15:23:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15