./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/parallel-ticket-4.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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:33:22,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:33:22,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:33:22,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:33:22,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:33:22,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:33:22,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:33:22,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:33:22,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:33:22,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:33:22,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:33:22,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:33:22,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:33:22,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:33:22,682 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:33:22,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:33:22,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:33:22,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:33:22,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:33:22,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:33:22,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:33:22,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:33:22,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:33:22,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:33:22,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:33:22,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:33:22,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:33:22,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:33:22,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:33:22,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:33:22,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:33:22,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:33:22,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:33:22,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:33:22,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:33:22,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:33:22,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:33:22,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:33:22,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:33:22,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:33:22,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:33:22,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:33:22,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:33:22,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2024-01-27 15:33:22,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:33:22,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:33:22,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:33:22,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:33:22,941 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:33:22,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-01-27 15:33:24,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:33:24,277 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:33:24,278 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-01-27 15:33:24,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d31616ea/937da4be0a6b4993a12a3e119bd4cb43/FLAGfcd1ea1e7 [2024-01-27 15:33:24,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d31616ea/937da4be0a6b4993a12a3e119bd4cb43 [2024-01-27 15:33:24,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:33:24,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:33:24,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:33:24,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:33:24,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:33:24,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386d1b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24, skipping insertion in model container [2024-01-27 15:33:24,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:33:24,446 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/parallel-ticket-4.wvr.c[3578,3591] [2024-01-27 15:33:24,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:33:24,459 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:33:24,476 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/parallel-ticket-4.wvr.c[3578,3591] [2024-01-27 15:33:24,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:33:24,488 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:33:24,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24 WrapperNode [2024-01-27 15:33:24,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:33:24,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:33:24,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:33:24,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:33:24,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,521 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2024-01-27 15:33:24,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:33:24,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:33:24,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:33:24,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:33:24,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,547 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:33:24,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:33:24,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:33:24,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:33:24,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:33:24,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (1/1) ... [2024-01-27 15:33:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:33:24,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:33:24,603 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) [2024-01-27 15:33:24,652 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 [2024-01-27 15:33:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:33:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:33:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:33:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:33:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:33:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:33:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:33:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:33:24,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:33:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:33:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:33:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:33:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:33:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:33:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:33:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:33:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:33:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:33:24,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:33:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:33:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:33:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:33:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:33:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:33:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:33:24,693 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:33:24,779 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:33:24,780 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:33:24,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:33:24,969 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:33:25,113 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:33:25,114 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:33:25,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:33:25 BoogieIcfgContainer [2024-01-27 15:33:25,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:33:25,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:33:25,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:33:25,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:33:25,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:33:24" (1/3) ... [2024-01-27 15:33:25,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2acf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:33:25, skipping insertion in model container [2024-01-27 15:33:25,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:33:24" (2/3) ... [2024-01-27 15:33:25,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2acf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:33:25, skipping insertion in model container [2024-01-27 15:33:25,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:33:25" (3/3) ... [2024-01-27 15:33:25,120 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2024-01-27 15:33:25,126 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:33:25,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:33:25,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:33:25,133 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:33:25,167 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:33:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 124 flow [2024-01-27 15:33:25,236 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2024-01-27 15:33:25,236 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:33:25,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 44 events. 0/44 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:33:25,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 124 flow [2024-01-27 15:33:25,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 110 flow [2024-01-27 15:33:25,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:33:25,252 INFO L357 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@468e228d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:33:25,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:33:25,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:33:25,263 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2024-01-27 15:33:25,263 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:33:25,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:25,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:25,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:25,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash -14757495, now seen corresponding path program 1 times [2024-01-27 15:33:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344138536] [2024-01-27 15:33:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344138536] [2024-01-27 15:33:26,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344138536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:26,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583111078] [2024-01-27 15:33:26,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:26,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:26,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-01-27 15:33:26,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-01-27 15:33:26,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:26,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-01-27 15:33:26,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:27,791 INFO L124 PetriNetUnfolderBase]: 16907/23295 cut-off events. [2024-01-27 15:33:27,793 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2024-01-27 15:33:27,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 23295 events. 16907/23295 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 131578 event pairs, 4310 based on Foata normal form. 1/23268 useless extension candidates. Maximal degree in co-relation 42730. Up to 9585 conditions per place. [2024-01-27 15:33:27,894 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 88 selfloop transitions, 9 changer transitions 30/132 dead transitions. [2024-01-27 15:33:27,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 132 transitions, 581 flow [2024-01-27 15:33:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:33:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:33:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-01-27 15:33:27,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-01-27 15:33:27,910 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 110 flow. Second operand 6 states and 182 transitions. [2024-01-27 15:33:27,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 132 transitions, 581 flow [2024-01-27 15:33:27,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 132 transitions, 539 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:33:27,928 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 151 flow [2024-01-27 15:33:27,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-01-27 15:33:27,932 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-01-27 15:33:27,933 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 151 flow [2024-01-27 15:33:27,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-01-27 15:33:27,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:27,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:27,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:33:27,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:27,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1293729991, now seen corresponding path program 2 times [2024-01-27 15:33:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278383423] [2024-01-27 15:33:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:27,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278383423] [2024-01-27 15:33:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278383423] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:28,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255431803] [2024-01-27 15:33:28,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:28,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:28,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:28,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:28,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:28,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:29,161 INFO L124 PetriNetUnfolderBase]: 9434/14526 cut-off events. [2024-01-27 15:33:29,161 INFO L125 PetriNetUnfolderBase]: For 1782/2244 co-relation queries the response was YES. [2024-01-27 15:33:29,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 14526 events. 9434/14526 cut-off events. For 1782/2244 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 97095 event pairs, 1985 based on Foata normal form. 16/13920 useless extension candidates. Maximal degree in co-relation 31108. Up to 4304 conditions per place. [2024-01-27 15:33:29,228 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 33 changer transitions 1/145 dead transitions. [2024-01-27 15:33:29,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 145 transitions, 615 flow [2024-01-27 15:33:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:33:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:33:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-27 15:33:29,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-01-27 15:33:29,235 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 151 flow. Second operand 7 states and 227 transitions. [2024-01-27 15:33:29,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 145 transitions, 615 flow [2024-01-27 15:33:29,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 145 transitions, 606 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:33:29,241 INFO L231 Difference]: Finished difference. Result has 60 places, 77 transitions, 276 flow [2024-01-27 15:33:29,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=77} [2024-01-27 15:33:29,242 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-01-27 15:33:29,243 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 77 transitions, 276 flow [2024-01-27 15:33:29,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:29,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:29,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:33:29,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:29,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1652188769, now seen corresponding path program 3 times [2024-01-27 15:33:29,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:29,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163744835] [2024-01-27 15:33:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163744835] [2024-01-27 15:33:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163744835] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:29,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:29,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:29,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25225175] [2024-01-27 15:33:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:29,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-01-27 15:33:29,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 77 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-01-27 15:33:29,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:29,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-01-27 15:33:29,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:31,423 INFO L124 PetriNetUnfolderBase]: 23341/32584 cut-off events. [2024-01-27 15:33:31,423 INFO L125 PetriNetUnfolderBase]: For 17859/17859 co-relation queries the response was YES. [2024-01-27 15:33:31,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86314 conditions, 32584 events. 23341/32584 cut-off events. For 17859/17859 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 193753 event pairs, 6287 based on Foata normal form. 2/32543 useless extension candidates. Maximal degree in co-relation 22304. Up to 15953 conditions per place. [2024-01-27 15:33:31,686 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 172 selfloop transitions, 12 changer transitions 30/219 dead transitions. [2024-01-27 15:33:31,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 219 transitions, 1218 flow [2024-01-27 15:33:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:33:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:33:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-01-27 15:33:31,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-27 15:33:31,689 INFO L175 Difference]: Start difference. First operand has 60 places, 77 transitions, 276 flow. Second operand 6 states and 180 transitions. [2024-01-27 15:33:31,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 219 transitions, 1218 flow [2024-01-27 15:33:31,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 219 transitions, 1209 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:33:31,726 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 342 flow [2024-01-27 15:33:31,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2024-01-27 15:33:31,728 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-01-27 15:33:31,728 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 342 flow [2024-01-27 15:33:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-01-27 15:33:31,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:31,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:33:31,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:31,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 165651255, now seen corresponding path program 4 times [2024-01-27 15:33:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654224817] [2024-01-27 15:33:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:31,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:31,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654224817] [2024-01-27 15:33:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654224817] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241133258] [2024-01-27 15:33:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:31,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:31,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:31,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:31,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:31,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:32,690 INFO L124 PetriNetUnfolderBase]: 9149/13968 cut-off events. [2024-01-27 15:33:32,690 INFO L125 PetriNetUnfolderBase]: For 11483/12839 co-relation queries the response was YES. [2024-01-27 15:33:32,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38370 conditions, 13968 events. 9149/13968 cut-off events. For 11483/12839 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 91798 event pairs, 1673 based on Foata normal form. 98/13572 useless extension candidates. Maximal degree in co-relation 24739. Up to 4277 conditions per place. [2024-01-27 15:33:32,775 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 36 changer transitions 1/151 dead transitions. [2024-01-27 15:33:32,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 151 transitions, 778 flow [2024-01-27 15:33:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:33:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:33:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-27 15:33:32,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-01-27 15:33:32,777 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 342 flow. Second operand 7 states and 227 transitions. [2024-01-27 15:33:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 151 transitions, 778 flow [2024-01-27 15:33:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 727 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-01-27 15:33:32,788 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 383 flow [2024-01-27 15:33:32,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2024-01-27 15:33:32,789 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-01-27 15:33:32,789 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 383 flow [2024-01-27 15:33:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:32,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:32,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:32,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:33:32,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:32,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -176851905, now seen corresponding path program 5 times [2024-01-27 15:33:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:32,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42326192] [2024-01-27 15:33:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42326192] [2024-01-27 15:33:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42326192] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:33:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564766178] [2024-01-27 15:33:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:33:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:33:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:33:32,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:32,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:32,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:34,238 INFO L124 PetriNetUnfolderBase]: 15206/23374 cut-off events. [2024-01-27 15:33:34,238 INFO L125 PetriNetUnfolderBase]: For 22696/23572 co-relation queries the response was YES. [2024-01-27 15:33:34,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67551 conditions, 23374 events. 15206/23374 cut-off events. For 22696/23572 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 165312 event pairs, 3804 based on Foata normal form. 280/23204 useless extension candidates. Maximal degree in co-relation 19639. Up to 8791 conditions per place. [2024-01-27 15:33:34,402 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 106 selfloop transitions, 48 changer transitions 0/174 dead transitions. [2024-01-27 15:33:34,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 174 transitions, 1069 flow [2024-01-27 15:33:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:33:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:33:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-27 15:33:34,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-01-27 15:33:34,403 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 383 flow. Second operand 5 states and 173 transitions. [2024-01-27 15:33:34,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 174 transitions, 1069 flow [2024-01-27 15:33:34,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 174 transitions, 943 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:33:34,438 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 672 flow [2024-01-27 15:33:34,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2024-01-27 15:33:34,439 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-01-27 15:33:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 672 flow [2024-01-27 15:33:34,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:34,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:34,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:34,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:33:34,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:34,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1764722299, now seen corresponding path program 6 times [2024-01-27 15:33:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60335363] [2024-01-27 15:33:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:34,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60335363] [2024-01-27 15:33:34,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60335363] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:34,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394029523] [2024-01-27 15:33:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:34,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:34,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:34,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:34,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:34,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:34,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:34,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:34,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:36,237 INFO L124 PetriNetUnfolderBase]: 17394/26964 cut-off events. [2024-01-27 15:33:36,237 INFO L125 PetriNetUnfolderBase]: For 37202/38664 co-relation queries the response was YES. [2024-01-27 15:33:36,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82356 conditions, 26964 events. 17394/26964 cut-off events. For 37202/38664 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 199577 event pairs, 3746 based on Foata normal form. 372/26504 useless extension candidates. Maximal degree in co-relation 23567. Up to 9522 conditions per place. [2024-01-27 15:33:36,455 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 110 selfloop transitions, 83 changer transitions 2/215 dead transitions. [2024-01-27 15:33:36,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 215 transitions, 1429 flow [2024-01-27 15:33:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:33:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:33:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-01-27 15:33:36,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-27 15:33:36,456 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 672 flow. Second operand 6 states and 216 transitions. [2024-01-27 15:33:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 215 transitions, 1429 flow [2024-01-27 15:33:36,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 215 transitions, 1412 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-27 15:33:36,507 INFO L231 Difference]: Finished difference. Result has 76 places, 143 transitions, 1064 flow [2024-01-27 15:33:36,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1064, PETRI_PLACES=76, PETRI_TRANSITIONS=143} [2024-01-27 15:33:36,507 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-01-27 15:33:36,507 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 143 transitions, 1064 flow [2024-01-27 15:33:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:36,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:36,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:36,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:33:36,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:36,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1982229061, now seen corresponding path program 7 times [2024-01-27 15:33:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337414924] [2024-01-27 15:33:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337414924] [2024-01-27 15:33:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337414924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:36,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:33:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535132379] [2024-01-27 15:33:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:36,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:33:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:33:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:33:36,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:36,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 143 transitions, 1064 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:36,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:36,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:36,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:38,427 INFO L124 PetriNetUnfolderBase]: 17516/27489 cut-off events. [2024-01-27 15:33:38,427 INFO L125 PetriNetUnfolderBase]: For 66465/67651 co-relation queries the response was YES. [2024-01-27 15:33:38,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93078 conditions, 27489 events. 17516/27489 cut-off events. For 66465/67651 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 204837 event pairs, 4748 based on Foata normal form. 480/27547 useless extension candidates. Maximal degree in co-relation 24789. Up to 12055 conditions per place. [2024-01-27 15:33:38,654 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 126 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2024-01-27 15:33:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 210 transitions, 1721 flow [2024-01-27 15:33:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:33:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:33:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-01-27 15:33:38,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-01-27 15:33:38,655 INFO L175 Difference]: Start difference. First operand has 76 places, 143 transitions, 1064 flow. Second operand 5 states and 175 transitions. [2024-01-27 15:33:38,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 210 transitions, 1721 flow [2024-01-27 15:33:38,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 210 transitions, 1703 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 15:33:38,769 INFO L231 Difference]: Finished difference. Result has 81 places, 153 transitions, 1340 flow [2024-01-27 15:33:38,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=81, PETRI_TRANSITIONS=153} [2024-01-27 15:33:38,769 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-01-27 15:33:38,770 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 153 transitions, 1340 flow [2024-01-27 15:33:38,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:38,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:38,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:33:38,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:38,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2105691893, now seen corresponding path program 8 times [2024-01-27 15:33:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:38,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246083052] [2024-01-27 15:33:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:38,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:38,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246083052] [2024-01-27 15:33:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246083052] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:38,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783477531] [2024-01-27 15:33:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:38,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:38,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:38,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:38,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 153 transitions, 1340 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:38,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:38,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:38,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:40,990 INFO L124 PetriNetUnfolderBase]: 17582/27472 cut-off events. [2024-01-27 15:33:40,990 INFO L125 PetriNetUnfolderBase]: For 91494/93144 co-relation queries the response was YES. [2024-01-27 15:33:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101312 conditions, 27472 events. 17582/27472 cut-off events. For 91494/93144 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 204881 event pairs, 3677 based on Foata normal form. 652/27408 useless extension candidates. Maximal degree in co-relation 31120. Up to 9510 conditions per place. [2024-01-27 15:33:41,162 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 102 selfloop transitions, 114 changer transitions 1/237 dead transitions. [2024-01-27 15:33:41,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 237 transitions, 2091 flow [2024-01-27 15:33:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:33:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:33:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-27 15:33:41,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2024-01-27 15:33:41,165 INFO L175 Difference]: Start difference. First operand has 81 places, 153 transitions, 1340 flow. Second operand 7 states and 235 transitions. [2024-01-27 15:33:41,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 237 transitions, 2091 flow [2024-01-27 15:33:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 237 transitions, 1986 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-27 15:33:41,303 INFO L231 Difference]: Finished difference. Result has 85 places, 161 transitions, 1605 flow [2024-01-27 15:33:41,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1605, PETRI_PLACES=85, PETRI_TRANSITIONS=161} [2024-01-27 15:33:41,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-01-27 15:33:41,306 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 161 transitions, 1605 flow [2024-01-27 15:33:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:41,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:41,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:41,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:33:41,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:41,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1059510583, now seen corresponding path program 9 times [2024-01-27 15:33:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498503650] [2024-01-27 15:33:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:41,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:41,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498503650] [2024-01-27 15:33:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498503650] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:41,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:41,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:33:41,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802819744] [2024-01-27 15:33:41,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:41,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:33:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:33:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:33:41,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:41,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 161 transitions, 1605 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:41,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:43,468 INFO L124 PetriNetUnfolderBase]: 17118/27103 cut-off events. [2024-01-27 15:33:43,469 INFO L125 PetriNetUnfolderBase]: For 107223/108503 co-relation queries the response was YES. [2024-01-27 15:33:43,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102821 conditions, 27103 events. 17118/27103 cut-off events. For 107223/108503 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 206210 event pairs, 4786 based on Foata normal form. 564/27096 useless extension candidates. Maximal degree in co-relation 25024. Up to 11813 conditions per place. [2024-01-27 15:33:43,665 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 124 selfloop transitions, 82 changer transitions 5/231 dead transitions. [2024-01-27 15:33:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 231 transitions, 2397 flow [2024-01-27 15:33:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:33:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:33:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-01-27 15:33:43,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-01-27 15:33:43,667 INFO L175 Difference]: Start difference. First operand has 85 places, 161 transitions, 1605 flow. Second operand 5 states and 177 transitions. [2024-01-27 15:33:43,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 231 transitions, 2397 flow [2024-01-27 15:33:43,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 231 transitions, 2196 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:33:43,756 INFO L231 Difference]: Finished difference. Result has 87 places, 172 transitions, 1807 flow [2024-01-27 15:33:43,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1807, PETRI_PLACES=87, PETRI_TRANSITIONS=172} [2024-01-27 15:33:43,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-01-27 15:33:43,757 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 172 transitions, 1807 flow [2024-01-27 15:33:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:43,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:43,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:43,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:33:43,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:43,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1641910543, now seen corresponding path program 10 times [2024-01-27 15:33:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:43,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237638106] [2024-01-27 15:33:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:43,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237638106] [2024-01-27 15:33:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237638106] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:33:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793657996] [2024-01-27 15:33:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:33:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:33:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:33:43,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:43,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 172 transitions, 1807 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:43,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:43,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:43,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:45,162 INFO L124 PetriNetUnfolderBase]: 11286/18186 cut-off events. [2024-01-27 15:33:45,163 INFO L125 PetriNetUnfolderBase]: For 71834/73190 co-relation queries the response was YES. [2024-01-27 15:33:45,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67860 conditions, 18186 events. 11286/18186 cut-off events. For 71834/73190 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 130832 event pairs, 2818 based on Foata normal form. 1096/19010 useless extension candidates. Maximal degree in co-relation 17005. Up to 8585 conditions per place. [2024-01-27 15:33:45,277 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 86 changer transitions 0/221 dead transitions. [2024-01-27 15:33:45,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2419 flow [2024-01-27 15:33:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:33:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:33:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-01-27 15:33:45,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-01-27 15:33:45,283 INFO L175 Difference]: Start difference. First operand has 87 places, 172 transitions, 1807 flow. Second operand 5 states and 171 transitions. [2024-01-27 15:33:45,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2419 flow [2024-01-27 15:33:45,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 221 transitions, 2315 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-27 15:33:45,351 INFO L231 Difference]: Finished difference. Result has 88 places, 173 transitions, 2001 flow [2024-01-27 15:33:45,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2001, PETRI_PLACES=88, PETRI_TRANSITIONS=173} [2024-01-27 15:33:45,352 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-01-27 15:33:45,352 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 173 transitions, 2001 flow [2024-01-27 15:33:45,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-01-27 15:33:45,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:45,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:33:45,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:45,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1777388555, now seen corresponding path program 11 times [2024-01-27 15:33:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300627607] [2024-01-27 15:33:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:45,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:45,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300627607] [2024-01-27 15:33:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300627607] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:45,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324086500] [2024-01-27 15:33:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:45,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:45,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 173 transitions, 2001 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:45,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:45,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:45,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:46,940 INFO L124 PetriNetUnfolderBase]: 11299/18164 cut-off events. [2024-01-27 15:33:46,940 INFO L125 PetriNetUnfolderBase]: For 77462/78579 co-relation queries the response was YES. [2024-01-27 15:33:47,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69454 conditions, 18164 events. 11299/18164 cut-off events. For 77462/78579 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 130929 event pairs, 2321 based on Foata normal form. 624/18290 useless extension candidates. Maximal degree in co-relation 19703. Up to 5821 conditions per place. [2024-01-27 15:33:47,210 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 111 selfloop transitions, 121 changer transitions 2/250 dead transitions. [2024-01-27 15:33:47,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 250 transitions, 2803 flow [2024-01-27 15:33:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:33:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:33:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-27 15:33:47,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-01-27 15:33:47,212 INFO L175 Difference]: Start difference. First operand has 88 places, 173 transitions, 2001 flow. Second operand 6 states and 213 transitions. [2024-01-27 15:33:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 250 transitions, 2803 flow [2024-01-27 15:33:47,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 250 transitions, 2706 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:33:47,253 INFO L231 Difference]: Finished difference. Result has 92 places, 177 transitions, 2259 flow [2024-01-27 15:33:47,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2259, PETRI_PLACES=92, PETRI_TRANSITIONS=177} [2024-01-27 15:33:47,254 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-01-27 15:33:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 177 transitions, 2259 flow [2024-01-27 15:33:47,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:47,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:47,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:47,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:33:47,255 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash -915820361, now seen corresponding path program 12 times [2024-01-27 15:33:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617237546] [2024-01-27 15:33:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:47,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617237546] [2024-01-27 15:33:47,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617237546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:47,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:47,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859989389] [2024-01-27 15:33:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:47,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:47,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 177 transitions, 2259 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:47,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:47,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:47,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:48,993 INFO L124 PetriNetUnfolderBase]: 11509/18608 cut-off events. [2024-01-27 15:33:48,993 INFO L125 PetriNetUnfolderBase]: For 96744/97752 co-relation queries the response was YES. [2024-01-27 15:33:49,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74657 conditions, 18608 events. 11509/18608 cut-off events. For 96744/97752 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 135815 event pairs, 2369 based on Foata normal form. 635/18735 useless extension candidates. Maximal degree in co-relation 21873. Up to 5821 conditions per place. [2024-01-27 15:33:49,097 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 131 selfloop transitions, 130 changer transitions 1/278 dead transitions. [2024-01-27 15:33:49,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 278 transitions, 3265 flow [2024-01-27 15:33:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:33:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:33:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-01-27 15:33:49,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7057291666666666 [2024-01-27 15:33:49,099 INFO L175 Difference]: Start difference. First operand has 92 places, 177 transitions, 2259 flow. Second operand 8 states and 271 transitions. [2024-01-27 15:33:49,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 278 transitions, 3265 flow [2024-01-27 15:33:49,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 278 transitions, 3039 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-27 15:33:49,146 INFO L231 Difference]: Finished difference. Result has 96 places, 186 transitions, 2504 flow [2024-01-27 15:33:49,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2504, PETRI_PLACES=96, PETRI_TRANSITIONS=186} [2024-01-27 15:33:49,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-01-27 15:33:49,147 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 186 transitions, 2504 flow [2024-01-27 15:33:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:49,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:49,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:49,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:33:49,148 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:49,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash -460386573, now seen corresponding path program 13 times [2024-01-27 15:33:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142801835] [2024-01-27 15:33:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142801835] [2024-01-27 15:33:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142801835] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661249837] [2024-01-27 15:33:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:49,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:49,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 186 transitions, 2504 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:49,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:49,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:49,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:50,847 INFO L124 PetriNetUnfolderBase]: 11214/18433 cut-off events. [2024-01-27 15:33:50,848 INFO L125 PetriNetUnfolderBase]: For 96538/97334 co-relation queries the response was YES. [2024-01-27 15:33:50,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73869 conditions, 18433 events. 11214/18433 cut-off events. For 96538/97334 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 137147 event pairs, 2309 based on Foata normal form. 736/18697 useless extension candidates. Maximal degree in co-relation 20944. Up to 5788 conditions per place. [2024-01-27 15:33:50,975 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 130 selfloop transitions, 136 changer transitions 16/298 dead transitions. [2024-01-27 15:33:50,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 298 transitions, 3680 flow [2024-01-27 15:33:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:33:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:33:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-27 15:33:50,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-01-27 15:33:50,977 INFO L175 Difference]: Start difference. First operand has 96 places, 186 transitions, 2504 flow. Second operand 8 states and 277 transitions. [2024-01-27 15:33:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 298 transitions, 3680 flow [2024-01-27 15:33:51,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 298 transitions, 3497 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:33:51,046 INFO L231 Difference]: Finished difference. Result has 102 places, 192 transitions, 2733 flow [2024-01-27 15:33:51,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2733, PETRI_PLACES=102, PETRI_TRANSITIONS=192} [2024-01-27 15:33:51,047 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-01-27 15:33:51,047 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 192 transitions, 2733 flow [2024-01-27 15:33:51,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:51,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:51,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:51,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:33:51,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:51,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1304993953, now seen corresponding path program 14 times [2024-01-27 15:33:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948223954] [2024-01-27 15:33:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:51,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:51,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948223954] [2024-01-27 15:33:51,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948223954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:51,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:51,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:51,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499549364] [2024-01-27 15:33:51,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:51,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:51,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 192 transitions, 2733 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:51,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:51,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:51,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:52,470 INFO L124 PetriNetUnfolderBase]: 8236/13739 cut-off events. [2024-01-27 15:33:52,470 INFO L125 PetriNetUnfolderBase]: For 69599/70051 co-relation queries the response was YES. [2024-01-27 15:33:52,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56943 conditions, 13739 events. 8236/13739 cut-off events. For 69599/70051 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 98332 event pairs, 1758 based on Foata normal form. 706/14224 useless extension candidates. Maximal degree in co-relation 16704. Up to 3984 conditions per place. [2024-01-27 15:33:52,562 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 117 selfloop transitions, 132 changer transitions 32/297 dead transitions. [2024-01-27 15:33:52,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 297 transitions, 4023 flow [2024-01-27 15:33:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:33:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:33:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-01-27 15:33:52,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-01-27 15:33:52,564 INFO L175 Difference]: Start difference. First operand has 102 places, 192 transitions, 2733 flow. Second operand 8 states and 266 transitions. [2024-01-27 15:33:52,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 297 transitions, 4023 flow [2024-01-27 15:33:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 297 transitions, 3768 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-27 15:33:52,615 INFO L231 Difference]: Finished difference. Result has 106 places, 186 transitions, 2744 flow [2024-01-27 15:33:52,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2744, PETRI_PLACES=106, PETRI_TRANSITIONS=186} [2024-01-27 15:33:52,616 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-01-27 15:33:52,616 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 186 transitions, 2744 flow [2024-01-27 15:33:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:52,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:52,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:33:52,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:52,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1732165137, now seen corresponding path program 15 times [2024-01-27 15:33:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742216937] [2024-01-27 15:33:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742216937] [2024-01-27 15:33:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742216937] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:52,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:52,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:33:52,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486644976] [2024-01-27 15:33:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:52,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:33:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:52,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:33:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:33:52,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:52,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 186 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:52,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:52,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:52,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:53,733 INFO L124 PetriNetUnfolderBase]: 7154/11919 cut-off events. [2024-01-27 15:33:53,733 INFO L125 PetriNetUnfolderBase]: For 69006/69312 co-relation queries the response was YES. [2024-01-27 15:33:53,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49250 conditions, 11919 events. 7154/11919 cut-off events. For 69006/69312 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 83762 event pairs, 1640 based on Foata normal form. 352/12052 useless extension candidates. Maximal degree in co-relation 16901. Up to 4130 conditions per place. [2024-01-27 15:33:53,921 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 104 selfloop transitions, 132 changer transitions 31/283 dead transitions. [2024-01-27 15:33:53,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 283 transitions, 3810 flow [2024-01-27 15:33:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:33:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:33:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-01-27 15:33:53,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-01-27 15:33:53,923 INFO L175 Difference]: Start difference. First operand has 106 places, 186 transitions, 2744 flow. Second operand 9 states and 279 transitions. [2024-01-27 15:33:53,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 283 transitions, 3810 flow [2024-01-27 15:33:53,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 283 transitions, 3689 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:33:53,968 INFO L231 Difference]: Finished difference. Result has 112 places, 175 transitions, 2689 flow [2024-01-27 15:33:53,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2689, PETRI_PLACES=112, PETRI_TRANSITIONS=175} [2024-01-27 15:33:53,969 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-01-27 15:33:53,969 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 175 transitions, 2689 flow [2024-01-27 15:33:53,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:53,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:53,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:53,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:33:53,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:53,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash -779429233, now seen corresponding path program 16 times [2024-01-27 15:33:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298347708] [2024-01-27 15:33:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:53,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298347708] [2024-01-27 15:33:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298347708] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:54,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:54,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:33:54,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148043767] [2024-01-27 15:33:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:54,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:33:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:33:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:33:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:54,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 175 transitions, 2689 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:54,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:54,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:54,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:55,164 INFO L124 PetriNetUnfolderBase]: 6588/11001 cut-off events. [2024-01-27 15:33:55,165 INFO L125 PetriNetUnfolderBase]: For 74616/75034 co-relation queries the response was YES. [2024-01-27 15:33:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46558 conditions, 11001 events. 6588/11001 cut-off events. For 74616/75034 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 76283 event pairs, 1630 based on Foata normal form. 368/11158 useless extension candidates. Maximal degree in co-relation 15418. Up to 3844 conditions per place. [2024-01-27 15:33:55,220 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 135 changer transitions 18/285 dead transitions. [2024-01-27 15:33:55,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 285 transitions, 3801 flow [2024-01-27 15:33:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:33:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:33:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 344 transitions. [2024-01-27 15:33:55,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-01-27 15:33:55,222 INFO L175 Difference]: Start difference. First operand has 112 places, 175 transitions, 2689 flow. Second operand 12 states and 344 transitions. [2024-01-27 15:33:55,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 285 transitions, 3801 flow [2024-01-27 15:33:55,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 285 transitions, 3502 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-01-27 15:33:55,281 INFO L231 Difference]: Finished difference. Result has 119 places, 178 transitions, 2690 flow [2024-01-27 15:33:55,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2690, PETRI_PLACES=119, PETRI_TRANSITIONS=178} [2024-01-27 15:33:55,282 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-01-27 15:33:55,282 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 178 transitions, 2690 flow [2024-01-27 15:33:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:55,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:55,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:33:55,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:55,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 624737755, now seen corresponding path program 17 times [2024-01-27 15:33:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519912151] [2024-01-27 15:33:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:55,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519912151] [2024-01-27 15:33:55,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519912151] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:55,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:55,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:33:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016873916] [2024-01-27 15:33:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:55,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:33:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:33:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:33:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:55,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 178 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:55,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:55,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:56,521 INFO L124 PetriNetUnfolderBase]: 6594/11069 cut-off events. [2024-01-27 15:33:56,522 INFO L125 PetriNetUnfolderBase]: For 78243/78531 co-relation queries the response was YES. [2024-01-27 15:33:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47017 conditions, 11069 events. 6594/11069 cut-off events. For 78243/78531 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 77533 event pairs, 1712 based on Foata normal form. 270/11156 useless extension candidates. Maximal degree in co-relation 15657. Up to 3890 conditions per place. [2024-01-27 15:33:56,589 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 99 selfloop transitions, 125 changer transitions 48/288 dead transitions. [2024-01-27 15:33:56,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 288 transitions, 3817 flow [2024-01-27 15:33:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:33:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:33:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 345 transitions. [2024-01-27 15:33:56,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-01-27 15:33:56,592 INFO L175 Difference]: Start difference. First operand has 119 places, 178 transitions, 2690 flow. Second operand 12 states and 345 transitions. [2024-01-27 15:33:56,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 288 transitions, 3817 flow [2024-01-27 15:33:56,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 288 transitions, 3628 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-27 15:33:56,660 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 2578 flow [2024-01-27 15:33:56,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-01-27 15:33:56,666 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-01-27 15:33:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 2578 flow [2024-01-27 15:33:56,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:56,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:56,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:33:56,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:56,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1384727863, now seen corresponding path program 18 times [2024-01-27 15:33:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401096402] [2024-01-27 15:33:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:56,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401096402] [2024-01-27 15:33:56,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401096402] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:56,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:56,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:33:56,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223970422] [2024-01-27 15:33:56,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:33:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:33:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:33:56,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:56,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:56,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:56,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:56,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:57,878 INFO L124 PetriNetUnfolderBase]: 6332/10605 cut-off events. [2024-01-27 15:33:57,878 INFO L125 PetriNetUnfolderBase]: For 83287/83733 co-relation queries the response was YES. [2024-01-27 15:33:57,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46132 conditions, 10605 events. 6332/10605 cut-off events. For 83287/83733 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73599 event pairs, 1626 based on Foata normal form. 382/10814 useless extension candidates. Maximal degree in co-relation 17878. Up to 3796 conditions per place. [2024-01-27 15:33:57,934 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 124 changer transitions 32/280 dead transitions. [2024-01-27 15:33:57,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 280 transitions, 3715 flow [2024-01-27 15:33:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:33:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:33:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 346 transitions. [2024-01-27 15:33:57,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006944444444444 [2024-01-27 15:33:57,937 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 2578 flow. Second operand 12 states and 346 transitions. [2024-01-27 15:33:57,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 280 transitions, 3715 flow [2024-01-27 15:33:57,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 280 transitions, 3425 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-27 15:33:57,994 INFO L231 Difference]: Finished difference. Result has 126 places, 165 transitions, 2491 flow [2024-01-27 15:33:57,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2491, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2024-01-27 15:33:57,995 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-01-27 15:33:57,995 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 2491 flow [2024-01-27 15:33:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:57,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:57,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:57,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:33:57,996 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:57,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash -248312015, now seen corresponding path program 19 times [2024-01-27 15:33:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641115872] [2024-01-27 15:33:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:58,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:58,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641115872] [2024-01-27 15:33:58,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641115872] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:58,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:33:58,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556343256] [2024-01-27 15:33:58,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:58,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:33:58,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:33:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:33:58,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:58,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 2491 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:58,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:58,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:58,403 INFO L124 PetriNetUnfolderBase]: 1396/2560 cut-off events. [2024-01-27 15:33:58,403 INFO L125 PetriNetUnfolderBase]: For 15834/15858 co-relation queries the response was YES. [2024-01-27 15:33:58,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11528 conditions, 2560 events. 1396/2560 cut-off events. For 15834/15858 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14315 event pairs, 282 based on Foata normal form. 248/2797 useless extension candidates. Maximal degree in co-relation 6070. Up to 561 conditions per place. [2024-01-27 15:33:58,415 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 58 selfloop transitions, 24 changer transitions 54/149 dead transitions. [2024-01-27 15:33:58,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 1936 flow [2024-01-27 15:33:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:33:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:33:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-01-27 15:33:58,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-01-27 15:33:58,416 INFO L175 Difference]: Start difference. First operand has 126 places, 165 transitions, 2491 flow. Second operand 8 states and 219 transitions. [2024-01-27 15:33:58,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 1936 flow [2024-01-27 15:33:58,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 149 transitions, 1770 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-01-27 15:33:58,432 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 604 flow [2024-01-27 15:33:58,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=122, PETRI_TRANSITIONS=65} [2024-01-27 15:33:58,433 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-01-27 15:33:58,433 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 604 flow [2024-01-27 15:33:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2024-01-27 15:33:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:58,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:33:58,434 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:58,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash -129561899, now seen corresponding path program 20 times [2024-01-27 15:33:58,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:58,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317618795] [2024-01-27 15:33:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:58,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:58,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317618795] [2024-01-27 15:33:58,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317618795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:58,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:58,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:33:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508713877] [2024-01-27 15:33:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:58,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:33:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:33:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:33:58,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:58,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 65 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:58,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:58,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:58,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:58,718 INFO L124 PetriNetUnfolderBase]: 458/852 cut-off events. [2024-01-27 15:33:58,718 INFO L125 PetriNetUnfolderBase]: For 3510/3518 co-relation queries the response was YES. [2024-01-27 15:33:58,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 852 events. 458/852 cut-off events. For 3510/3518 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3436 event pairs, 68 based on Foata normal form. 40/886 useless extension candidates. Maximal degree in co-relation 2021. Up to 201 conditions per place. [2024-01-27 15:33:58,722 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 50 selfloop transitions, 16 changer transitions 14/93 dead transitions. [2024-01-27 15:33:58,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 848 flow [2024-01-27 15:33:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:33:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:33:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-01-27 15:33:58,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-01-27 15:33:58,723 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 604 flow. Second operand 8 states and 190 transitions. [2024-01-27 15:33:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 848 flow [2024-01-27 15:33:58,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 574 flow, removed 36 selfloop flow, removed 33 redundant places. [2024-01-27 15:33:58,727 INFO L231 Difference]: Finished difference. Result has 86 places, 53 transitions, 278 flow [2024-01-27 15:33:58,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=86, PETRI_TRANSITIONS=53} [2024-01-27 15:33:58,727 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-01-27 15:33:58,728 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 53 transitions, 278 flow [2024-01-27 15:33:58,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:33:58,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:58,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:58,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:33:58,729 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:33:58,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash 421802057, now seen corresponding path program 21 times [2024-01-27 15:33:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:58,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765885622] [2024-01-27 15:33:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:58,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:33:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765885622] [2024-01-27 15:33:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765885622] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:58,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:58,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:33:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740568016] [2024-01-27 15:33:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:58,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:33:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:33:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:33:58,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 15:33:58,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 53 transitions, 278 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 15:33:58,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:58,958 INFO L124 PetriNetUnfolderBase]: 68/171 cut-off events. [2024-01-27 15:33:58,958 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-01-27 15:33:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 171 events. 68/171 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 501 event pairs, 8 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 583. Up to 40 conditions per place. [2024-01-27 15:33:58,959 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2024-01-27 15:33:58,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 52 transitions, 345 flow [2024-01-27 15:33:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:33:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:33:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-01-27 15:33:58,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912037037037037 [2024-01-27 15:33:58,960 INFO L175 Difference]: Start difference. First operand has 86 places, 53 transitions, 278 flow. Second operand 9 states and 169 transitions. [2024-01-27 15:33:58,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 52 transitions, 345 flow [2024-01-27 15:33:58,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 267 flow, removed 2 selfloop flow, removed 20 redundant places. [2024-01-27 15:33:58,962 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-01-27 15:33:58,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-01-27 15:33:58,962 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-01-27 15:33:58,962 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-01-27 15:33:58,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2024-01-27 15:33:58,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-27 15:33:58,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-01-27 15:33:58,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-27 15:33:58,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-27 15:33:58,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-27 15:33:58,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:33:58,966 INFO L445 BasicCegarLoop]: Path program histogram: [21] [2024-01-27 15:33:58,968 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:33:58,968 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:33:58,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:33:58 BasicIcfg [2024-01-27 15:33:58,972 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:33:58,972 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:33:58,972 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:33:58,973 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:33:58,973 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:33:25" (3/4) ... [2024-01-27 15:33:58,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:33:58,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:33:58,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:33:58,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:33:58,978 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2024-01-27 15:33:58,981 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 95 nodes and edges [2024-01-27 15:33:58,982 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-01-27 15:33:58,982 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:33:58,982 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:33:59,048 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:33:59,049 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:33:59,049 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:33:59,049 INFO L158 Benchmark]: Toolchain (without parser) took 34753.74ms. Allocated memory was 155.2MB in the beginning and 11.0GB in the end (delta: 10.8GB). Free memory was 125.5MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-01-27 15:33:59,050 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:33:59,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.98ms. Allocated memory is still 155.2MB. Free memory was 126.5MB in the beginning and 114.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-27 15:33:59,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.59ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 112.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:33:59,050 INFO L158 Benchmark]: Boogie Preprocessor took 38.04ms. Allocated memory is still 155.2MB. Free memory was 112.7MB in the beginning and 109.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:33:59,051 INFO L158 Benchmark]: RCFGBuilder took 553.26ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 56.4MB in the end (delta: 53.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-01-27 15:33:59,051 INFO L158 Benchmark]: TraceAbstraction took 33856.52ms. Allocated memory was 155.2MB in the beginning and 11.0GB in the end (delta: 10.8GB). Free memory was 56.0MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-01-27 15:33:59,051 INFO L158 Benchmark]: Witness Printer took 76.71ms. Allocated memory is still 11.0GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:33:59,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.98ms. Allocated memory is still 155.2MB. Free memory was 126.5MB in the beginning and 114.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.59ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 112.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.04ms. Allocated memory is still 155.2MB. Free memory was 112.7MB in the beginning and 109.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 553.26ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 56.4MB in the end (delta: 53.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 33856.52ms. Allocated memory was 155.2MB in the beginning and 11.0GB in the end (delta: 10.8GB). Free memory was 56.0MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 76.71ms. Allocated memory is still 11.0GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.8s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1542 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1538 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6410 IncrementalHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 387 mSolverCounterUnsat, 5 mSDtfsCounter, 6410 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2744occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 882 ConstructedInterpolants, 0 QuantifiedInterpolants, 3025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:33:59,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE