./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 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/test-context1.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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:44:16,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:44:16,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:44:16,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:44:16,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:44:16,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:44:16,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:44:16,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:44:16,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:44:16,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:44:16,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:44:16,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:44:16,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:44:16,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:44:16,987 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:44:16,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:44:16,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:44:16,988 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:44:16,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:44:16,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:44:16,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:44:16,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:44:16,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:44:16,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:44:16,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:44:16,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:44:16,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:44:16,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:44:16,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:44:16,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:44:16,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:44:16,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:44:16,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:44:16,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:44:16,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:44:16,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:44:16,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:44:16,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:44:16,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:44:17,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:44:17,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:44:17,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:44:17,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:44:17,199 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:44:17,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2024-02-20 12:44:18,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:44:18,345 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:44:18,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2024-02-20 12:44:18,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f967394d1/56757c93cdbd44e5bef72fa7da674949/FLAGa1c640ab4 [2024-02-20 12:44:18,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f967394d1/56757c93cdbd44e5bef72fa7da674949 [2024-02-20 12:44:18,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:44:18,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:44:18,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:44:18,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:44:18,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:44:18,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154b7615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18, skipping insertion in model container [2024-02-20 12:44:18,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,397 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:44:18,554 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/test-context1.wvr.c[2433,2446] [2024-02-20 12:44:18,567 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:44:18,576 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:44:18,603 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/test-context1.wvr.c[2433,2446] [2024-02-20 12:44:18,610 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:44:18,624 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:44:18,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18 WrapperNode [2024-02-20 12:44:18,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:44:18,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:44:18,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:44:18,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:44:18,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,665 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 135 [2024-02-20 12:44:18,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:44:18,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:44:18,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:44:18,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:44:18,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,709 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 2, 3, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-20 12:44:18,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:44:18,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:44:18,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:44:18,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:44:18,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (1/1) ... [2024-02-20 12:44:18,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:44:18,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:18,762 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) [2024-02-20 12:44:18,780 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 [2024-02-20 12:44:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:44:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:44:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:44:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:44:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:44:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:44:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:44:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:44:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:44:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:44:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:44:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:44:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:44:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:44:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:44:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:44:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:44:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:44:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:44:18,810 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:44:18,900 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:44:18,902 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:44:19,183 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:44:19,183 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:44:19,304 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:44:19,305 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-20 12:44:19,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:44:19 BoogieIcfgContainer [2024-02-20 12:44:19,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:44:19,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:44:19,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:44:19,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:44:19,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:44:18" (1/3) ... [2024-02-20 12:44:19,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f2d157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:44:19, skipping insertion in model container [2024-02-20 12:44:19,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:44:18" (2/3) ... [2024-02-20 12:44:19,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f2d157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:44:19, skipping insertion in model container [2024-02-20 12:44:19,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:44:19" (3/3) ... [2024-02-20 12:44:19,311 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-02-20 12:44:19,324 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:44:19,324 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:44:19,325 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:44:19,357 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 12:44:19,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 27 transitions, 68 flow [2024-02-20 12:44:19,419 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2024-02-20 12:44:19,419 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:44:19,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 5/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-02-20 12:44:19,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 27 transitions, 68 flow [2024-02-20 12:44:19,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 24 transitions, 60 flow [2024-02-20 12:44:19,440 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:44:19,446 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;@259dcdda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:44:19,446 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 12:44:19,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:44:19,459 INFO L124 PetriNetUnfolderBase]: 5/23 cut-off events. [2024-02-20 12:44:19,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:44:19,459 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:19,460 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:19,460 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:19,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1537549737, now seen corresponding path program 1 times [2024-02-20 12:44:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:19,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742765501] [2024-02-20 12:44:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742765501] [2024-02-20 12:44:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742765501] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:44:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:44:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:44:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166997093] [2024-02-20 12:44:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:44:19,707 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-20 12:44:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-20 12:44:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-20 12:44:19,733 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:19,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-02-20 12:44:19,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:19,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:19,807 INFO L124 PetriNetUnfolderBase]: 66/123 cut-off events. [2024-02-20 12:44:19,807 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-20 12:44:19,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 123 events. 66/123 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 393 event pairs, 45 based on Foata normal form. 20/118 useless extension candidates. Maximal degree in co-relation 204. Up to 119 conditions per place. [2024-02-20 12:44:19,811 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 19 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-02-20 12:44:19,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 94 flow [2024-02-20 12:44:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-20 12:44:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-20 12:44:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2024-02-20 12:44:19,827 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-02-20 12:44:19,830 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2024-02-20 12:44:19,830 INFO L507 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 94 flow [2024-02-20 12:44:19,830 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-02-20 12:44:19,830 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:19,830 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:19,831 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:44:19,831 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:19,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 259370651, now seen corresponding path program 1 times [2024-02-20 12:44:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:19,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017608230] [2024-02-20 12:44:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017608230] [2024-02-20 12:44:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017608230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:44:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:44:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:44:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729819291] [2024-02-20 12:44:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:44:19,949 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:44:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:44:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:44:19,951 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:19,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-02-20 12:44:19,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:19,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:19,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:20,032 INFO L124 PetriNetUnfolderBase]: 122/230 cut-off events. [2024-02-20 12:44:20,033 INFO L125 PetriNetUnfolderBase]: For 36/38 co-relation queries the response was YES. [2024-02-20 12:44:20,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 230 events. 122/230 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 867 event pairs, 45 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 548. Up to 216 conditions per place. [2024-02-20 12:44:20,034 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 26 selfloop transitions, 2 changer transitions 3/34 dead transitions. [2024-02-20 12:44:20,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 210 flow [2024-02-20 12:44:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:44:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:44:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-02-20 12:44:20,036 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-02-20 12:44:20,036 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-02-20 12:44:20,037 INFO L507 AbstractCegarLoop]: Abstraction has has 29 places, 34 transitions, 210 flow [2024-02-20 12:44:20,037 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-02-20 12:44:20,037 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:20,037 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:20,037 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:44:20,037 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:20,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1358472249, now seen corresponding path program 1 times [2024-02-20 12:44:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615403643] [2024-02-20 12:44:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615403643] [2024-02-20 12:44:20,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615403643] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:44:20,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:44:20,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:44:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032451171] [2024-02-20 12:44:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:44:20,101 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:44:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:44:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:44:20,102 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:20,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 34 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-02-20 12:44:20,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:20,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:20,161 INFO L124 PetriNetUnfolderBase]: 176/343 cut-off events. [2024-02-20 12:44:20,162 INFO L125 PetriNetUnfolderBase]: For 114/130 co-relation queries the response was YES. [2024-02-20 12:44:20,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 343 events. 176/343 cut-off events. For 114/130 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1475 event pairs, 45 based on Foata normal form. 10/290 useless extension candidates. Maximal degree in co-relation 1094. Up to 319 conditions per place. [2024-02-20 12:44:20,164 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 32 selfloop transitions, 2 changer transitions 10/47 dead transitions. [2024-02-20 12:44:20,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 385 flow [2024-02-20 12:44:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:44:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:44:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-02-20 12:44:20,165 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-02-20 12:44:20,166 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-02-20 12:44:20,166 INFO L507 AbstractCegarLoop]: Abstraction has has 31 places, 47 transitions, 385 flow [2024-02-20 12:44:20,166 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-02-20 12:44:20,167 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:20,167 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:20,167 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:44:20,167 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:20,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 482859049, now seen corresponding path program 1 times [2024-02-20 12:44:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311964963] [2024-02-20 12:44:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311964963] [2024-02-20 12:44:20,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311964963] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:44:20,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:44:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:44:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646311792] [2024-02-20 12:44:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:44:20,311 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:44:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:44:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:44:20,314 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:20,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 47 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-02-20 12:44:20,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:20,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:20,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:20,406 INFO L124 PetriNetUnfolderBase]: 221/443 cut-off events. [2024-02-20 12:44:20,406 INFO L125 PetriNetUnfolderBase]: For 212/218 co-relation queries the response was YES. [2024-02-20 12:44:20,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 443 events. 221/443 cut-off events. For 212/218 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2104 event pairs, 90 based on Foata normal form. 10/372 useless extension candidates. Maximal degree in co-relation 1358. Up to 415 conditions per place. [2024-02-20 12:44:20,411 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 33 selfloop transitions, 2 changer transitions 24/62 dead transitions. [2024-02-20 12:44:20,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 635 flow [2024-02-20 12:44:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:44:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:44:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-02-20 12:44:20,414 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-02-20 12:44:20,416 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2024-02-20 12:44:20,416 INFO L507 AbstractCegarLoop]: Abstraction has has 34 places, 62 transitions, 635 flow [2024-02-20 12:44:20,416 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-02-20 12:44:20,416 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:20,416 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:20,416 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-20 12:44:20,418 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:20,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1928893856, now seen corresponding path program 1 times [2024-02-20 12:44:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:20,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434039062] [2024-02-20 12:44:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:20,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:44:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434039062] [2024-02-20 12:44:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434039062] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055055599] [2024-02-20 12:44:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:20,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:20,653 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) [2024-02-20 12:44:20,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 12:44:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:20,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:44:20,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:44:20,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:20,936 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-20 12:44:20,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-02-20 12:44:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:44:20,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055055599] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:20,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-20 12:44:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142232953] [2024-02-20 12:44:20,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:20,976 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:44:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:20,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:44:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:44:20,977 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:20,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 62 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 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) [2024-02-20 12:44:20,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:20,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:20,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:21,123 INFO L124 PetriNetUnfolderBase]: 277/550 cut-off events. [2024-02-20 12:44:21,123 INFO L125 PetriNetUnfolderBase]: For 471/503 co-relation queries the response was YES. [2024-02-20 12:44:21,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 550 events. 277/550 cut-off events. For 471/503 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2599 event pairs, 90 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2110. Up to 512 conditions per place. [2024-02-20 12:44:21,127 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 39 selfloop transitions, 5 changer transitions 27/74 dead transitions. [2024-02-20 12:44:21,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 74 transitions, 903 flow [2024-02-20 12:44:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:44:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:44:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-02-20 12:44:21,128 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-02-20 12:44:21,129 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2024-02-20 12:44:21,129 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 74 transitions, 903 flow [2024-02-20 12:44:21,129 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 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) [2024-02-20 12:44:21,129 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:21,129 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:21,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-20 12:44:21,341 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:21,341 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:21,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash -657829262, now seen corresponding path program 2 times [2024-02-20 12:44:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:21,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644855783] [2024-02-20 12:44:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:44:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644855783] [2024-02-20 12:44:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644855783] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043772756] [2024-02-20 12:44:21,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:44:21,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:21,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:21,410 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) [2024-02-20 12:44:21,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 12:44:21,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:44:21,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:21,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:44:21,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:44:21,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:44:21,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043772756] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:21,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2024-02-20 12:44:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777381894] [2024-02-20 12:44:21,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:21,690 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 12:44:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 12:44:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-20 12:44:21,691 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:21,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 74 transitions, 903 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-02-20 12:44:21,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:21,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:21,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:21,960 INFO L124 PetriNetUnfolderBase]: 702/1403 cut-off events. [2024-02-20 12:44:21,961 INFO L125 PetriNetUnfolderBase]: For 1806/1846 co-relation queries the response was YES. [2024-02-20 12:44:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1403 events. 702/1403 cut-off events. For 1806/1846 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8110 event pairs, 135 based on Foata normal form. 38/1188 useless extension candidates. Maximal degree in co-relation 5467. Up to 1293 conditions per place. [2024-02-20 12:44:21,968 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 78 selfloop transitions, 12 changer transitions 83/176 dead transitions. [2024-02-20 12:44:21,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 176 transitions, 2533 flow [2024-02-20 12:44:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:44:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:44:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-02-20 12:44:21,970 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-02-20 12:44:21,970 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-02-20 12:44:21,971 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 176 transitions, 2533 flow [2024-02-20 12:44:21,971 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-02-20 12:44:21,971 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:21,971 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:21,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 12:44:22,180 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,SelfDestructingSolverStorable5 [2024-02-20 12:44:22,181 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:22,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -769299347, now seen corresponding path program 3 times [2024-02-20 12:44:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923960331] [2024-02-20 12:44:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:44:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:22,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923960331] [2024-02-20 12:44:22,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923960331] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:22,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414844962] [2024-02-20 12:44:22,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:44:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:22,522 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) [2024-02-20 12:44:22,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 12:44:22,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:44:22,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:22,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:44:22,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:22,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:44:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:44:22,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:23,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-02-20 12:44:23,397 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-20 12:44:23,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2024-02-20 12:44:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:44:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414844962] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:23,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:23,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-02-20 12:44:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383455509] [2024-02-20 12:44:23,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:23,468 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:44:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:44:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:44:23,469 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:23,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 176 transitions, 2533 flow. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 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) [2024-02-20 12:44:23,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:25,140 INFO L124 PetriNetUnfolderBase]: 2391/4695 cut-off events. [2024-02-20 12:44:25,140 INFO L125 PetriNetUnfolderBase]: For 8744/8792 co-relation queries the response was YES. [2024-02-20 12:44:25,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35100 conditions, 4695 events. 2391/4695 cut-off events. For 8744/8792 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 32482 event pairs, 180 based on Foata normal form. 14/3887 useless extension candidates. Maximal degree in co-relation 14665. Up to 4298 conditions per place. [2024-02-20 12:44:25,182 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 284 selfloop transitions, 39 changer transitions 229/555 dead transitions. [2024-02-20 12:44:25,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 555 transitions, 9147 flow [2024-02-20 12:44:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:44:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:44:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 445 transitions. [2024-02-20 12:44:25,184 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2024-02-20 12:44:25,184 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2024-02-20 12:44:25,185 INFO L507 AbstractCegarLoop]: Abstraction has has 75 places, 555 transitions, 9147 flow [2024-02-20 12:44:25,185 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 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) [2024-02-20 12:44:25,185 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:25,185 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:25,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:44:25,397 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:25,397 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:25,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash 982264512, now seen corresponding path program 4 times [2024-02-20 12:44:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219981948] [2024-02-20 12:44:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219981948] [2024-02-20 12:44:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219981948] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899232055] [2024-02-20 12:44:25,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:44:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:25,961 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) [2024-02-20 12:44:25,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 12:44:26,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:44:26,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:26,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 12:44:26,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:44:26,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:26,323 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-20 12:44:26,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2024-02-20 12:44:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:44:26,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899232055] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:26,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:26,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 25 [2024-02-20 12:44:26,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296778532] [2024-02-20 12:44:26,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:26,415 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:44:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:44:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:44:26,417 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:26,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 555 transitions, 9147 flow. Second operand has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:44:26,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:26,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:26,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:28,719 INFO L124 PetriNetUnfolderBase]: 5837/11340 cut-off events. [2024-02-20 12:44:28,720 INFO L125 PetriNetUnfolderBase]: For 28239/28295 co-relation queries the response was YES. [2024-02-20 12:44:28,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94830 conditions, 11340 events. 5837/11340 cut-off events. For 28239/28295 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 90980 event pairs, 180 based on Foata normal form. 82/9462 useless extension candidates. Maximal degree in co-relation 44175. Up to 10355 conditions per place. [2024-02-20 12:44:28,795 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 686 selfloop transitions, 140 changer transitions 488/1317 dead transitions. [2024-02-20 12:44:28,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 1317 transitions, 24351 flow [2024-02-20 12:44:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:44:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:44:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 441 transitions. [2024-02-20 12:44:28,797 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-02-20 12:44:28,798 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 76 predicate places. [2024-02-20 12:44:28,798 INFO L507 AbstractCegarLoop]: Abstraction has has 102 places, 1317 transitions, 24351 flow [2024-02-20 12:44:28,798 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:44:28,798 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:28,798 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:28,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:44:29,013 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:29,013 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:29,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash -937350830, now seen corresponding path program 5 times [2024-02-20 12:44:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:29,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032180557] [2024-02-20 12:44:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-02-20 12:44:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032180557] [2024-02-20 12:44:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032180557] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413723958] [2024-02-20 12:44:29,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:44:29,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:29,152 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) [2024-02-20 12:44:29,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:44:29,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-20 12:44:29,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:29,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:44:29,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:44:29,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:44:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413723958] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:29,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:29,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-02-20 12:44:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742055966] [2024-02-20 12:44:29,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:29,370 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:44:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:44:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:44:29,371 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:29,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 1317 transitions, 24351 flow. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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) [2024-02-20 12:44:29,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:29,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:29,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:33,466 INFO L124 PetriNetUnfolderBase]: 8770/17158 cut-off events. [2024-02-20 12:44:33,466 INFO L125 PetriNetUnfolderBase]: For 54531/54547 co-relation queries the response was YES. [2024-02-20 12:44:33,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159147 conditions, 17158 events. 8770/17158 cut-off events. For 54531/54547 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 147825 event pairs, 225 based on Foata normal form. 280/14444 useless extension candidates. Maximal degree in co-relation 80915. Up to 15668 conditions per place. [2024-02-20 12:44:33,541 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 606 selfloop transitions, 126 changer transitions 1250/1985 dead transitions. [2024-02-20 12:44:33,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1985 transitions, 40699 flow [2024-02-20 12:44:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-20 12:44:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-20 12:44:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 426 transitions. [2024-02-20 12:44:33,543 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2024-02-20 12:44:33,544 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2024-02-20 12:44:33,544 INFO L507 AbstractCegarLoop]: Abstraction has has 125 places, 1985 transitions, 40699 flow [2024-02-20 12:44:33,544 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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) [2024-02-20 12:44:33,545 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:33,545 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:33,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:44:33,756 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:33,758 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:33,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1187230413, now seen corresponding path program 6 times [2024-02-20 12:44:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:33,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888006575] [2024-02-20 12:44:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:34,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888006575] [2024-02-20 12:44:34,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888006575] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806463246] [2024-02-20 12:44:34,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:44:34,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:34,247 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) [2024-02-20 12:44:34,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:44:34,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-02-20 12:44:34,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:34,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:44:34,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:34,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-02-20 12:44:34,959 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-02-20 12:44:34,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 12:44:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:34,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:35,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-02-20 12:44:35,917 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-02-20 12:44:35,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2024-02-20 12:44:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806463246] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:36,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2024-02-20 12:44:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729768653] [2024-02-20 12:44:36,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:36,220 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-02-20 12:44:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-02-20 12:44:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1503, Unknown=0, NotChecked=0, Total=1722 [2024-02-20 12:44:36,221 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:44:36,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 1985 transitions, 40699 flow. Second operand has 42 states, 42 states have (on average 7.238095238095238) internal successors, (304), 42 states have internal predecessors, (304), 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) [2024-02-20 12:44:36,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:36,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:44:36,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:45:09,313 INFO L124 PetriNetUnfolderBase]: 26297/51566 cut-off events. [2024-02-20 12:45:09,313 INFO L125 PetriNetUnfolderBase]: For 206065/206137 co-relation queries the response was YES. [2024-02-20 12:45:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524624 conditions, 51566 events. 26297/51566 cut-off events. For 206065/206137 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 519408 event pairs, 270 based on Foata normal form. 526/43048 useless extension candidates. Maximal degree in co-relation 238657. Up to 47034 conditions per place. [2024-02-20 12:45:09,577 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1443 selfloop transitions, 158 changer transitions 4316/5920 dead transitions. [2024-02-20 12:45:09,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 5920 transitions, 133270 flow [2024-02-20 12:45:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-02-20 12:45:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2024-02-20 12:45:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 2269 transitions. [2024-02-20 12:45:09,583 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6318574213311056 [2024-02-20 12:45:09,583 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2024-02-20 12:45:09,584 INFO L507 AbstractCegarLoop]: Abstraction has has 257 places, 5920 transitions, 133270 flow [2024-02-20 12:45:09,584 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.238095238095238) internal successors, (304), 42 states have internal predecessors, (304), 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) [2024-02-20 12:45:09,584 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:45:09,584 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:45:09,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:45:09,788 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:45:09,789 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:45:09,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:45:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 301092323, now seen corresponding path program 7 times [2024-02-20 12:45:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:45:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281592012] [2024-02-20 12:45:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:45:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:45:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:45:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:45:10,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:45:10,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281592012] [2024-02-20 12:45:10,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281592012] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:45:10,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445596339] [2024-02-20 12:45:10,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:45:10,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:45:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:45:10,295 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) [2024-02-20 12:45:10,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:45:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:45:10,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 12:45:10,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:45:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-02-20 12:45:10,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:45:10,715 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-20 12:45:10,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2024-02-20 12:45:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-02-20 12:45:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445596339] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:45:10,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:45:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 30 [2024-02-20 12:45:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277919217] [2024-02-20 12:45:10,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:45:10,805 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:45:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:45:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:45:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:45:10,806 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:45:10,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 5920 transitions, 133270 flow. Second operand has 31 states, 31 states have (on average 7.838709677419355) internal successors, (243), 31 states have internal predecessors, (243), 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) [2024-02-20 12:45:10,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:45:10,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:45:10,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:46:27,357 INFO L124 PetriNetUnfolderBase]: 35829/69726 cut-off events. [2024-02-20 12:46:27,357 INFO L125 PetriNetUnfolderBase]: For 335864/335884 co-relation queries the response was YES. [2024-02-20 12:46:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774310 conditions, 69726 events. 35829/69726 cut-off events. For 335864/335884 co-relation queries the response was YES. Maximal size of possible extension queue 2108. Compared 728439 event pairs, 270 based on Foata normal form. 106/57623 useless extension candidates. Maximal degree in co-relation 364533. Up to 63726 conditions per place. [2024-02-20 12:46:27,727 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 814 selfloop transitions, 249 changer transitions 6874/7940 dead transitions. [2024-02-20 12:46:27,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 7940 transitions, 194640 flow [2024-02-20 12:46:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-20 12:46:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-20 12:46:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 609 transitions. [2024-02-20 12:46:27,730 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5935672514619883 [2024-02-20 12:46:27,730 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2024-02-20 12:46:27,730 INFO L507 AbstractCegarLoop]: Abstraction has has 294 places, 7940 transitions, 194640 flow [2024-02-20 12:46:27,730 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.838709677419355) internal successors, (243), 31 states have internal predecessors, (243), 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) [2024-02-20 12:46:27,730 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:46:27,731 INFO L234 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:46:27,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:46:27,943 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:46:27,944 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:46:27,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:46:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -929689458, now seen corresponding path program 8 times [2024-02-20 12:46:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:46:27,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275370017] [2024-02-20 12:46:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:46:27,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:46:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:46:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-02-20 12:46:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:46:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275370017] [2024-02-20 12:46:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275370017] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:46:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585962188] [2024-02-20 12:46:28,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:46:28,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:46:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:46:28,264 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) [2024-02-20 12:46:28,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:46:28,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:46:28,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:46:28,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:46:28,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:46:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-02-20 12:46:28,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:46:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-02-20 12:46:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585962188] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:46:28,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:46:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2024-02-20 12:46:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956625143] [2024-02-20 12:46:28,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:46:28,451 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:46:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:46:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:46:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-20 12:46:28,452 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:46:28,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 7940 transitions, 194640 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2024-02-20 12:46:28,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:46:28,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:46:28,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:49:29,923 INFO L124 PetriNetUnfolderBase]: 54961/106988 cut-off events. [2024-02-20 12:49:29,923 INFO L125 PetriNetUnfolderBase]: For 618741/618763 co-relation queries the response was YES. [2024-02-20 12:49:30,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285376 conditions, 106988 events. 54961/106988 cut-off events. For 618741/618763 co-relation queries the response was YES. Maximal size of possible extension queue 3211. Compared 1184285 event pairs, 270 based on Foata normal form. 30/88283 useless extension candidates. Maximal degree in co-relation 596575. Up to 97745 conditions per place. [2024-02-20 12:49:30,662 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 1708 selfloop transitions, 417 changer transitions 10037/12165 dead transitions. [2024-02-20 12:49:30,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 12165 transitions, 322551 flow [2024-02-20 12:49:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:49:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:49:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-02-20 12:49:30,663 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-02-20 12:49:30,664 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-02-20 12:49:30,664 INFO L507 AbstractCegarLoop]: Abstraction has has 300 places, 12165 transitions, 322551 flow [2024-02-20 12:49:30,664 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2024-02-20 12:49:30,664 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:49:30,665 INFO L234 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:49:30,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:49:30,876 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,SelfDestructingSolverStorable11 [2024-02-20 12:49:30,878 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:49:30,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:49:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 341948384, now seen corresponding path program 9 times [2024-02-20 12:49:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:49:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334304623] [2024-02-20 12:49:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:49:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:49:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:49:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:49:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:49:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334304623] [2024-02-20 12:49:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334304623] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:49:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655657991] [2024-02-20 12:49:31,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:49:31,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:49:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:49:31,454 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) [2024-02-20 12:49:31,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:49:31,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-02-20 12:49:31,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:49:31,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 45 conjunts are in the unsatisfiable core [2024-02-20 12:49:31,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:49:31,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-02-20 12:49:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-02-20 12:49:32,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:49:32,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-02-20 12:49:32,842 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-20 12:49:32,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2024-02-20 12:49:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-02-20 12:49:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655657991] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:49:33,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:49:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 42 [2024-02-20 12:49:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338723216] [2024-02-20 12:49:33,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:49:33,034 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-02-20 12:49:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:49:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-02-20 12:49:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2024-02-20 12:49:33,036 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 12:49:33,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 12165 transitions, 322551 flow. Second operand has 43 states, 43 states have (on average 7.209302325581396) internal successors, (310), 43 states have internal predecessors, (310), 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) [2024-02-20 12:49:33,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:49:33,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 12:49:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15