./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/chl-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:39:02,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:39:02,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:39:02,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:39:02,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:39:02,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:39:02,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:39:02,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:39:02,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:39:02,240 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:39:02,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:39:02,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:39:02,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:39:02,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:39:02,241 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:39:02,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:39:02,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:39:02,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:39:02,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:39:02,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:39:02,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:39:02,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:39:02,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:39:02,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:39:02,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:39:02,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:39:02,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:39:02,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:39:02,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:39:02,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:39:02,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:39:02,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:39:02,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:39:02,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:39:02,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:39:02,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:39:02,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:39:02,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:39:02,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:39:02,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:39:02,259 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:39:02,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:39:02,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:39:02,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-06-27 16:39:02,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:39:02,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:39:02,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:39:02,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:39:02,561 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:39:02,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-06-27 16:39:03,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:39:04,021 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:39:04,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-06-27 16:39:04,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a34935a/da1703e105094e0b865c461e3f0d89fb/FLAG35b6ebab8 [2024-06-27 16:39:04,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a34935a/da1703e105094e0b865c461e3f0d89fb [2024-06-27 16:39:04,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:39:04,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:39:04,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:39:04,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:39:04,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:39:04,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46216f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04, skipping insertion in model container [2024-06-27 16:39:04,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:39:04,316 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-06-27 16:39:04,329 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:39:04,342 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:39:04,427 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-06-27 16:39:04,430 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:39:04,469 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:39:04,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04 WrapperNode [2024-06-27 16:39:04,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:39:04,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:39:04,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:39:04,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:39:04,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,537 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-06-27 16:39:04,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:39:04,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:39:04,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:39:04,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:39:04,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,592 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-27 16:39:04,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:39:04,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:39:04,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:39:04,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:39:04,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (1/1) ... [2024-06-27 16:39:04,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:39:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:39:04,719 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) [2024-06-27 16:39:04,743 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 [2024-06-27 16:39:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:39:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:39:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:39:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:39:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:39:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:39:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:39:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:39:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:39:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:39:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:39:04,777 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:39:04,896 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:39:04,898 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:39:05,612 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:39:05,613 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:39:06,376 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:39:06,377 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 16:39:06,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:39:06 BoogieIcfgContainer [2024-06-27 16:39:06,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:39:06,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:39:06,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:39:06,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:39:06,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:39:04" (1/3) ... [2024-06-27 16:39:06,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145a2f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:39:06, skipping insertion in model container [2024-06-27 16:39:06,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:39:04" (2/3) ... [2024-06-27 16:39:06,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145a2f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:39:06, skipping insertion in model container [2024-06-27 16:39:06,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:39:06" (3/3) ... [2024-06-27 16:39:06,389 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-06-27 16:39:06,398 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:39:06,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:39:06,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:39:06,409 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:39:06,529 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:39:06,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-06-27 16:39:06,605 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-06-27 16:39:06,605 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:39:06,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 16:39:06,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-06-27 16:39:06,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-06-27 16:39:06,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:39:06,634 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;@3f6cbcce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:39:06,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:39:06,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:39:06,657 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-06-27 16:39:06,658 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:39:06,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:06,659 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] [2024-06-27 16:39:06,659 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 1 more)] === [2024-06-27 16:39:06,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-06-27 16:39:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949800960] [2024-06-27 16:39:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:39:07,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949800960] [2024-06-27 16:39:07,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949800960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:39:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370302902] [2024-06-27 16:39:07,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:07,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:39:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:39:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:39:07,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-27 16:39:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:07,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:08,047 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-06-27 16:39:08,047 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-27 16:39:08,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12272 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-06-27 16:39:08,070 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-06-27 16:39:08,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-06-27 16:39:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:39:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:39:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-27 16:39:08,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-27 16:39:08,086 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-06-27 16:39:08,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-06-27 16:39:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:39:08,096 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-06-27 16:39:08,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-06-27 16:39:08,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-27 16:39:08,103 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-06-27 16:39:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-27 16:39:08,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:08,104 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] [2024-06-27 16:39:08,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:39:08,105 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 1 more)] === [2024-06-27 16:39:08,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-06-27 16:39:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:08,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806166970] [2024-06-27 16:39:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:08,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:39:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:08,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806166970] [2024-06-27 16:39:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806166970] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:39:08,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382128938] [2024-06-27 16:39:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:08,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:08,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:39:08,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:39:08,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:39:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:08,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:39:08,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:39:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:39:08,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:39:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:39:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382128938] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:39:08,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:39:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-27 16:39:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550710067] [2024-06-27 16:39:08,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:39:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:39:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:39:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:39:08,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:08,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:39:08,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:08,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:08,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:09,317 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-06-27 16:39:09,317 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 16:39:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-06-27 16:39:09,333 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-06-27 16:39:09,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-06-27 16:39:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:39:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:39:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 16:39:09,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-06-27 16:39:09,335 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-06-27 16:39:09,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-06-27 16:39:09,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:39:09,338 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-06-27 16:39:09,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-06-27 16:39:09,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-27 16:39:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-06-27 16:39:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:39:09,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:09,340 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:09,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:39:09,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:09,557 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 1 more)] === [2024-06-27 16:39:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-06-27 16:39:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788403755] [2024-06-27 16:39:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:39:09,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788403755] [2024-06-27 16:39:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788403755] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:39:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113338444] [2024-06-27 16:39:09,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:39:09,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:09,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:39:09,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:39:09,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:39:10,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:39:10,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:39:10,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:39:10,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:39:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:39:11,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:39:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113338444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:11,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:39:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-06-27 16:39:11,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538586624] [2024-06-27 16:39:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:11,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:39:11,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:11,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:11,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:11,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:11,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:12,912 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-06-27 16:39:12,912 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 16:39:12,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-06-27 16:39:12,934 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-06-27 16:39:12,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-06-27 16:39:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 16:39:12,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 16:39:12,937 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-06-27 16:39:12,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-06-27 16:39:12,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:39:12,940 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-06-27 16:39:12,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-06-27 16:39:12,941 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-27 16:39:12,941 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-06-27 16:39:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:12,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:12,942 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:12,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:39:13,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-06-27 16:39:13,164 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 1 more)] === [2024-06-27 16:39:13,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-06-27 16:39:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840082363] [2024-06-27 16:39:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:39:13,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:13,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840082363] [2024-06-27 16:39:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840082363] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:39:13,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211029208] [2024-06-27 16:39:13,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:39:13,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:13,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:39:13,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:39:13,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:39:13,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 16:39:13,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:39:13,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:39:13,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:39:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:39:14,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:39:14,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211029208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:14,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:39:14,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-06-27 16:39:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31555539] [2024-06-27 16:39:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:14,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:14,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:14,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:39:14,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:14,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:14,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:14,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:14,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:16,074 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-06-27 16:39:16,074 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-27 16:39:16,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-06-27 16:39:16,103 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-06-27 16:39:16,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-06-27 16:39:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 16:39:16,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-06-27 16:39:16,105 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-06-27 16:39:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-06-27 16:39:16,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 16:39:16,110 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-06-27 16:39:16,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-27 16:39:16,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-27 16:39:16,111 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-06-27 16:39:16,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:16,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:16,112 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:16,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:39:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:16,328 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 1 more)] === [2024-06-27 16:39:16,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-06-27 16:39:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701475214] [2024-06-27 16:39:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:39:16,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701475214] [2024-06-27 16:39:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701475214] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:39:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516593636] [2024-06-27 16:39:16,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:39:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:39:16,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:39:16,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:39:16,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:39:16,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:39:16,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 16:39:16,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:39:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:39:16,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:39:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:39:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516593636] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:39:16,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:39:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-06-27 16:39:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520189584] [2024-06-27 16:39:16,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:39:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:39:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:39:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:39:16,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:16,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-06-27 16:39:16,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:16,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:16,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:17,832 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-06-27 16:39:17,832 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-06-27 16:39:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-06-27 16:39:17,857 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-06-27 16:39:17,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-06-27 16:39:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:39:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:39:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 16:39:17,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-06-27 16:39:17,859 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-06-27 16:39:17,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-06-27 16:39:17,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:39:17,864 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-06-27 16:39:17,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-27 16:39:17,865 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-27 16:39:17,866 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-06-27 16:39:17,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-06-27 16:39:17,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:17,866 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:17,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:39:18,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:39:18,082 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 1 more)] === [2024-06-27 16:39:18,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-06-27 16:39:18,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:18,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84496021] [2024-06-27 16:39:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:18,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84496021] [2024-06-27 16:39:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84496021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566136264] [2024-06-27 16:39:18,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:18,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:18,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:18,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:18,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:18,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:18,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:18,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:20,647 INFO L124 PetriNetUnfolderBase]: 8341/11907 cut-off events. [2024-06-27 16:39:20,648 INFO L125 PetriNetUnfolderBase]: For 2568/2568 co-relation queries the response was YES. [2024-06-27 16:39:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25551 conditions, 11907 events. 8341/11907 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 63060 event pairs, 2453 based on Foata normal form. 1/10614 useless extension candidates. Maximal degree in co-relation 25438. Up to 4630 conditions per place. [2024-06-27 16:39:20,695 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 119 selfloop transitions, 23 changer transitions 1/144 dead transitions. [2024-06-27 16:39:20,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 144 transitions, 794 flow [2024-06-27 16:39:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-27 16:39:20,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877551020408164 [2024-06-27 16:39:20,697 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 5 states and 144 transitions. [2024-06-27 16:39:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 144 transitions, 794 flow [2024-06-27 16:39:20,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 144 transitions, 758 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 16:39:20,707 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 432 flow [2024-06-27 16:39:20,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2024-06-27 16:39:20,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-27 16:39:20,708 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 432 flow [2024-06-27 16:39:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:20,708 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:39:20,709 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 1 more)] === [2024-06-27 16:39:20,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-06-27 16:39:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260037449] [2024-06-27 16:39:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:21,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260037449] [2024-06-27 16:39:21,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260037449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:21,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:21,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261241097] [2024-06-27 16:39:21,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:21,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:21,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:21,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:23,430 INFO L124 PetriNetUnfolderBase]: 8799/12567 cut-off events. [2024-06-27 16:39:23,430 INFO L125 PetriNetUnfolderBase]: For 9163/9163 co-relation queries the response was YES. [2024-06-27 16:39:23,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32537 conditions, 12567 events. 8799/12567 cut-off events. For 9163/9163 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67572 event pairs, 5058 based on Foata normal form. 1/12160 useless extension candidates. Maximal degree in co-relation 32438. Up to 9250 conditions per place. [2024-06-27 16:39:23,499 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 133 selfloop transitions, 17 changer transitions 2/153 dead transitions. [2024-06-27 16:39:23,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 974 flow [2024-06-27 16:39:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 16:39:23,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 16:39:23,501 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 432 flow. Second operand 5 states and 127 transitions. [2024-06-27 16:39:23,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 974 flow [2024-06-27 16:39:23,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 153 transitions, 972 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 16:39:23,544 INFO L231 Difference]: Finished difference. Result has 71 places, 93 transitions, 577 flow [2024-06-27 16:39:23,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=71, PETRI_TRANSITIONS=93} [2024-06-27 16:39:23,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 16:39:23,545 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 93 transitions, 577 flow [2024-06-27 16:39:23,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:23,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:23,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:23,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:39:23,546 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 1 more)] === [2024-06-27 16:39:23,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-06-27 16:39:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:23,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653092196] [2024-06-27 16:39:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653092196] [2024-06-27 16:39:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653092196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:24,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733490425] [2024-06-27 16:39:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:24,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:24,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 93 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:24,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:24,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:24,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:26,911 INFO L124 PetriNetUnfolderBase]: 14554/20658 cut-off events. [2024-06-27 16:39:26,911 INFO L125 PetriNetUnfolderBase]: For 24287/24287 co-relation queries the response was YES. [2024-06-27 16:39:26,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57737 conditions, 20658 events. 14554/20658 cut-off events. For 24287/24287 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 119050 event pairs, 4118 based on Foata normal form. 1/20659 useless extension candidates. Maximal degree in co-relation 57634. Up to 7859 conditions per place. [2024-06-27 16:39:27,010 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 157 selfloop transitions, 46 changer transitions 2/206 dead transitions. [2024-06-27 16:39:27,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 206 transitions, 1516 flow [2024-06-27 16:39:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-27 16:39:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-06-27 16:39:27,012 INFO L175 Difference]: Start difference. First operand has 71 places, 93 transitions, 577 flow. Second operand 5 states and 148 transitions. [2024-06-27 16:39:27,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 206 transitions, 1516 flow [2024-06-27 16:39:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 206 transitions, 1500 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 16:39:27,087 INFO L231 Difference]: Finished difference. Result has 78 places, 126 transitions, 1040 flow [2024-06-27 16:39:27,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=78, PETRI_TRANSITIONS=126} [2024-06-27 16:39:27,087 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-06-27 16:39:27,088 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 126 transitions, 1040 flow [2024-06-27 16:39:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:27,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:27,088 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:39:27,088 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 1 more)] === [2024-06-27 16:39:27,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-06-27 16:39:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:27,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42618060] [2024-06-27 16:39:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42618060] [2024-06-27 16:39:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42618060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759390729] [2024-06-27 16:39:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:27,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:27,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 126 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:27,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:27,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:27,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:31,108 INFO L124 PetriNetUnfolderBase]: 15317/21786 cut-off events. [2024-06-27 16:39:31,108 INFO L125 PetriNetUnfolderBase]: For 46945/46945 co-relation queries the response was YES. [2024-06-27 16:39:31,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69152 conditions, 21786 events. 15317/21786 cut-off events. For 46945/46945 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 127277 event pairs, 3400 based on Foata normal form. 1/21787 useless extension candidates. Maximal degree in co-relation 69046. Up to 6969 conditions per place. [2024-06-27 16:39:31,273 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 171 selfloop transitions, 72 changer transitions 2/246 dead transitions. [2024-06-27 16:39:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 246 transitions, 2120 flow [2024-06-27 16:39:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:39:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:39:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 16:39:31,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-06-27 16:39:31,278 INFO L175 Difference]: Start difference. First operand has 78 places, 126 transitions, 1040 flow. Second operand 6 states and 180 transitions. [2024-06-27 16:39:31,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 246 transitions, 2120 flow [2024-06-27 16:39:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 246 transitions, 2086 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-27 16:39:31,475 INFO L231 Difference]: Finished difference. Result has 87 places, 157 transitions, 1626 flow [2024-06-27 16:39:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1626, PETRI_PLACES=87, PETRI_TRANSITIONS=157} [2024-06-27 16:39:31,475 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-27 16:39:31,476 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 157 transitions, 1626 flow [2024-06-27 16:39:31,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:39:31,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:31,476 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:31,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:39:31,477 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 1 more)] === [2024-06-27 16:39:31,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1701085854, now seen corresponding path program 1 times [2024-06-27 16:39:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:31,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942100820] [2024-06-27 16:39:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:31,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942100820] [2024-06-27 16:39:31,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942100820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:31,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:31,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693416918] [2024-06-27 16:39:31,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:31,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:31,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 157 transitions, 1626 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:31,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:31,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:34,651 INFO L124 PetriNetUnfolderBase]: 15532/22131 cut-off events. [2024-06-27 16:39:34,651 INFO L125 PetriNetUnfolderBase]: For 74103/74103 co-relation queries the response was YES. [2024-06-27 16:39:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75797 conditions, 22131 events. 15532/22131 cut-off events. For 74103/74103 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 129682 event pairs, 8440 based on Foata normal form. 27/22158 useless extension candidates. Maximal degree in co-relation 75687. Up to 16333 conditions per place. [2024-06-27 16:39:34,780 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 193 selfloop transitions, 15 changer transitions 15/224 dead transitions. [2024-06-27 16:39:34,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 224 transitions, 2385 flow [2024-06-27 16:39:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 16:39:34,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 16:39:34,781 INFO L175 Difference]: Start difference. First operand has 87 places, 157 transitions, 1626 flow. Second operand 5 states and 120 transitions. [2024-06-27 16:39:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 224 transitions, 2385 flow [2024-06-27 16:39:35,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 224 transitions, 2331 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-06-27 16:39:35,126 INFO L231 Difference]: Finished difference. Result has 94 places, 159 transitions, 1667 flow [2024-06-27 16:39:35,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1667, PETRI_PLACES=94, PETRI_TRANSITIONS=159} [2024-06-27 16:39:35,127 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-27 16:39:35,127 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 159 transitions, 1667 flow [2024-06-27 16:39:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:35,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:35,128 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:35,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:39:35,128 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 1 more)] === [2024-06-27 16:39:35,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1978855452, now seen corresponding path program 1 times [2024-06-27 16:39:35,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:35,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095030373] [2024-06-27 16:39:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095030373] [2024-06-27 16:39:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095030373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:39:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944509055] [2024-06-27 16:39:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:35,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:39:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:39:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:39:35,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:35,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 159 transitions, 1667 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:39:35,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:35,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:38,485 INFO L124 PetriNetUnfolderBase]: 16659/23838 cut-off events. [2024-06-27 16:39:38,486 INFO L125 PetriNetUnfolderBase]: For 77501/77501 co-relation queries the response was YES. [2024-06-27 16:39:38,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80321 conditions, 23838 events. 16659/23838 cut-off events. For 77501/77501 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 141673 event pairs, 5998 based on Foata normal form. 5/23843 useless extension candidates. Maximal degree in co-relation 80207. Up to 18612 conditions per place. [2024-06-27 16:39:38,648 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 164 selfloop transitions, 13 changer transitions 44/222 dead transitions. [2024-06-27 16:39:38,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 222 transitions, 2589 flow [2024-06-27 16:39:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:39:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:39:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 16:39:38,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 16:39:38,650 INFO L175 Difference]: Start difference. First operand has 94 places, 159 transitions, 1667 flow. Second operand 4 states and 101 transitions. [2024-06-27 16:39:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 222 transitions, 2589 flow [2024-06-27 16:39:38,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 222 transitions, 2557 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 16:39:39,001 INFO L231 Difference]: Finished difference. Result has 97 places, 152 transitions, 1613 flow [2024-06-27 16:39:39,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1613, PETRI_PLACES=97, PETRI_TRANSITIONS=152} [2024-06-27 16:39:39,001 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-27 16:39:39,001 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 152 transitions, 1613 flow [2024-06-27 16:39:39,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:39:39,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:39,002 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:39:39,002 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 1 more)] === [2024-06-27 16:39:39,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash -805292702, now seen corresponding path program 2 times [2024-06-27 16:39:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:39,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28277345] [2024-06-27 16:39:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28277345] [2024-06-27 16:39:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28277345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184589137] [2024-06-27 16:39:39,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:39,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:39,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:39,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:39,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:39,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 152 transitions, 1613 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:39,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:39,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:39,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:42,946 INFO L124 PetriNetUnfolderBase]: 15713/22591 cut-off events. [2024-06-27 16:39:42,946 INFO L125 PetriNetUnfolderBase]: For 68997/68997 co-relation queries the response was YES. [2024-06-27 16:39:43,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75164 conditions, 22591 events. 15713/22591 cut-off events. For 68997/68997 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 134889 event pairs, 7892 based on Foata normal form. 1/22592 useless extension candidates. Maximal degree in co-relation 75049. Up to 15615 conditions per place. [2024-06-27 16:39:43,081 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 199 selfloop transitions, 51 changer transitions 3/254 dead transitions. [2024-06-27 16:39:43,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 254 transitions, 2670 flow [2024-06-27 16:39:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:39:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:39:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 16:39:43,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 16:39:43,084 INFO L175 Difference]: Start difference. First operand has 97 places, 152 transitions, 1613 flow. Second operand 6 states and 154 transitions. [2024-06-27 16:39:43,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 254 transitions, 2670 flow [2024-06-27 16:39:43,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 254 transitions, 2581 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 16:39:43,396 INFO L231 Difference]: Finished difference. Result has 102 places, 172 transitions, 1984 flow [2024-06-27 16:39:43,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1984, PETRI_PLACES=102, PETRI_TRANSITIONS=172} [2024-06-27 16:39:43,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-27 16:39:43,397 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 172 transitions, 1984 flow [2024-06-27 16:39:43,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:43,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:43,397 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:39:43,398 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 1 more)] === [2024-06-27 16:39:43,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 20476366, now seen corresponding path program 1 times [2024-06-27 16:39:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248903893] [2024-06-27 16:39:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:43,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248903893] [2024-06-27 16:39:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248903893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:43,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:43,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:39:43,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114149078] [2024-06-27 16:39:43,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:39:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:39:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:39:43,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 172 transitions, 1984 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:39:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:46,570 INFO L124 PetriNetUnfolderBase]: 16218/23352 cut-off events. [2024-06-27 16:39:46,570 INFO L125 PetriNetUnfolderBase]: For 84518/84518 co-relation queries the response was YES. [2024-06-27 16:39:46,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82417 conditions, 23352 events. 16218/23352 cut-off events. For 84518/84518 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 141285 event pairs, 5825 based on Foata normal form. 6/23358 useless extension candidates. Maximal degree in co-relation 82299. Up to 18206 conditions per place. [2024-06-27 16:39:46,767 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 168 selfloop transitions, 15 changer transitions 46/230 dead transitions. [2024-06-27 16:39:46,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 230 transitions, 2874 flow [2024-06-27 16:39:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:39:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:39:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 16:39:46,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 16:39:46,768 INFO L175 Difference]: Start difference. First operand has 102 places, 172 transitions, 1984 flow. Second operand 4 states and 103 transitions. [2024-06-27 16:39:46,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 230 transitions, 2874 flow [2024-06-27 16:39:47,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2845 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 16:39:47,545 INFO L231 Difference]: Finished difference. Result has 107 places, 160 transitions, 1867 flow [2024-06-27 16:39:47,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1867, PETRI_PLACES=107, PETRI_TRANSITIONS=160} [2024-06-27 16:39:47,546 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-27 16:39:47,546 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 160 transitions, 1867 flow [2024-06-27 16:39:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:39:47,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:47,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:47,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 16:39:47,547 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 1 more)] === [2024-06-27 16:39:47,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 467842110, now seen corresponding path program 2 times [2024-06-27 16:39:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493157971] [2024-06-27 16:39:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:47,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493157971] [2024-06-27 16:39:47,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493157971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:47,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:47,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523695501] [2024-06-27 16:39:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:47,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:47,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 160 transitions, 1867 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:47,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:47,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:47,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:50,550 INFO L124 PetriNetUnfolderBase]: 14674/21100 cut-off events. [2024-06-27 16:39:50,550 INFO L125 PetriNetUnfolderBase]: For 75801/75801 co-relation queries the response was YES. [2024-06-27 16:39:50,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74293 conditions, 21100 events. 14674/21100 cut-off events. For 75801/75801 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 125303 event pairs, 4219 based on Foata normal form. 2/21102 useless extension candidates. Maximal degree in co-relation 74255. Up to 10566 conditions per place. [2024-06-27 16:39:50,687 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 167 selfloop transitions, 56 changer transitions 18/242 dead transitions. [2024-06-27 16:39:50,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 242 transitions, 2830 flow [2024-06-27 16:39:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-27 16:39:50,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-06-27 16:39:50,689 INFO L175 Difference]: Start difference. First operand has 107 places, 160 transitions, 1867 flow. Second operand 5 states and 134 transitions. [2024-06-27 16:39:50,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 242 transitions, 2830 flow [2024-06-27 16:39:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 242 transitions, 2802 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 16:39:51,014 INFO L231 Difference]: Finished difference. Result has 110 places, 168 transitions, 2115 flow [2024-06-27 16:39:51,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2115, PETRI_PLACES=110, PETRI_TRANSITIONS=168} [2024-06-27 16:39:51,015 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-27 16:39:51,015 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 168 transitions, 2115 flow [2024-06-27 16:39:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:51,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:51,016 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 16:39:51,016 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 1 more)] === [2024-06-27 16:39:51,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1750016208, now seen corresponding path program 3 times [2024-06-27 16:39:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777505486] [2024-06-27 16:39:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777505486] [2024-06-27 16:39:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777505486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399172162] [2024-06-27 16:39:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:51,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:51,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 168 transitions, 2115 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:51,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:51,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:51,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:54,641 INFO L124 PetriNetUnfolderBase]: 15173/21833 cut-off events. [2024-06-27 16:39:54,641 INFO L125 PetriNetUnfolderBase]: For 91013/91013 co-relation queries the response was YES. [2024-06-27 16:39:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79668 conditions, 21833 events. 15173/21833 cut-off events. For 91013/91013 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 130818 event pairs, 4382 based on Foata normal form. 5/21838 useless extension candidates. Maximal degree in co-relation 79628. Up to 7790 conditions per place. [2024-06-27 16:39:54,756 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 61 changer transitions 40/266 dead transitions. [2024-06-27 16:39:54,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 266 transitions, 3102 flow [2024-06-27 16:39:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:39:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:39:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 16:39:54,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-06-27 16:39:54,761 INFO L175 Difference]: Start difference. First operand has 110 places, 168 transitions, 2115 flow. Second operand 6 states and 166 transitions. [2024-06-27 16:39:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 266 transitions, 3102 flow [2024-06-27 16:39:55,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 266 transitions, 3026 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 16:39:55,090 INFO L231 Difference]: Finished difference. Result has 111 places, 159 transitions, 1976 flow [2024-06-27 16:39:55,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1976, PETRI_PLACES=111, PETRI_TRANSITIONS=159} [2024-06-27 16:39:55,093 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-06-27 16:39:55,093 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 159 transitions, 1976 flow [2024-06-27 16:39:55,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:55,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:55,094 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:55,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 16:39:55,095 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 1 more)] === [2024-06-27 16:39:55,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1140056032, now seen corresponding path program 3 times [2024-06-27 16:39:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427030783] [2024-06-27 16:39:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427030783] [2024-06-27 16:39:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427030783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:55,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:55,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:55,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320780067] [2024-06-27 16:39:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:55,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:55,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 159 transitions, 1976 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:55,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:55,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:55,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:39:58,019 INFO L124 PetriNetUnfolderBase]: 13359/19137 cut-off events. [2024-06-27 16:39:58,019 INFO L125 PetriNetUnfolderBase]: For 87110/87110 co-relation queries the response was YES. [2024-06-27 16:39:58,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70756 conditions, 19137 events. 13359/19137 cut-off events. For 87110/87110 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 110939 event pairs, 4702 based on Foata normal form. 25/19162 useless extension candidates. Maximal degree in co-relation 70717. Up to 11543 conditions per place. [2024-06-27 16:39:58,141 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 175 selfloop transitions, 15 changer transitions 31/222 dead transitions. [2024-06-27 16:39:58,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 222 transitions, 2769 flow [2024-06-27 16:39:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:39:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:39:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 16:39:58,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 16:39:58,143 INFO L175 Difference]: Start difference. First operand has 111 places, 159 transitions, 1976 flow. Second operand 5 states and 120 transitions. [2024-06-27 16:39:58,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 222 transitions, 2769 flow [2024-06-27 16:39:58,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 222 transitions, 2660 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 16:39:58,626 INFO L231 Difference]: Finished difference. Result has 108 places, 150 transitions, 1816 flow [2024-06-27 16:39:58,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1816, PETRI_PLACES=108, PETRI_TRANSITIONS=150} [2024-06-27 16:39:58,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-27 16:39:58,627 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 150 transitions, 1816 flow [2024-06-27 16:39:58,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:58,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:39:58,627 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:39:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 16:39:58,628 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 1 more)] === [2024-06-27 16:39:58,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:39:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -96172292, now seen corresponding path program 2 times [2024-06-27 16:39:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:39:58,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592204009] [2024-06-27 16:39:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:39:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:39:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:39:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:39:58,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:39:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592204009] [2024-06-27 16:39:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592204009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:39:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:39:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:39:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316782385] [2024-06-27 16:39:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:39:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:39:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:39:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:39:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:39:58,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:39:58,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 1816 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:39:58,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:39:58,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:39:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:02,188 INFO L124 PetriNetUnfolderBase]: 17073/24262 cut-off events. [2024-06-27 16:40:02,188 INFO L125 PetriNetUnfolderBase]: For 98632/98632 co-relation queries the response was YES. [2024-06-27 16:40:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86073 conditions, 24262 events. 17073/24262 cut-off events. For 98632/98632 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 142760 event pairs, 5557 based on Foata normal form. 2/24264 useless extension candidates. Maximal degree in co-relation 86037. Up to 12215 conditions per place. [2024-06-27 16:40:02,323 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 195 selfloop transitions, 36 changer transitions 17/249 dead transitions. [2024-06-27 16:40:02,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 249 transitions, 3073 flow [2024-06-27 16:40:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:40:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:40:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 16:40:02,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-06-27 16:40:02,324 INFO L175 Difference]: Start difference. First operand has 108 places, 150 transitions, 1816 flow. Second operand 5 states and 128 transitions. [2024-06-27 16:40:02,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 249 transitions, 3073 flow [2024-06-27 16:40:02,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 249 transitions, 3007 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 16:40:02,649 INFO L231 Difference]: Finished difference. Result has 109 places, 166 transitions, 2064 flow [2024-06-27 16:40:02,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2064, PETRI_PLACES=109, PETRI_TRANSITIONS=166} [2024-06-27 16:40:02,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-27 16:40:02,649 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 166 transitions, 2064 flow [2024-06-27 16:40:02,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:02,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:02,650 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:02,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 16:40:02,650 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 1 more)] === [2024-06-27 16:40:02,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1489604512, now seen corresponding path program 3 times [2024-06-27 16:40:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930993444] [2024-06-27 16:40:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:02,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:02,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930993444] [2024-06-27 16:40:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930993444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:02,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:02,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:40:02,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562570861] [2024-06-27 16:40:02,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:02,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:40:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:40:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:40:02,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:02,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 166 transitions, 2064 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:02,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:02,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:02,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:06,135 INFO L124 PetriNetUnfolderBase]: 16940/24060 cut-off events. [2024-06-27 16:40:06,135 INFO L125 PetriNetUnfolderBase]: For 106258/106258 co-relation queries the response was YES. [2024-06-27 16:40:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88886 conditions, 24060 events. 16940/24060 cut-off events. For 106258/106258 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 141212 event pairs, 6040 based on Foata normal form. 3/24063 useless extension candidates. Maximal degree in co-relation 88851. Up to 12167 conditions per place. [2024-06-27 16:40:06,306 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 30 changer transitions 63/258 dead transitions. [2024-06-27 16:40:06,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 258 transitions, 3104 flow [2024-06-27 16:40:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:40:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:40:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 16:40:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 16:40:06,307 INFO L175 Difference]: Start difference. First operand has 109 places, 166 transitions, 2064 flow. Second operand 6 states and 149 transitions. [2024-06-27 16:40:06,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 258 transitions, 3104 flow [2024-06-27 16:40:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 258 transitions, 3026 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 16:40:06,794 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 1493 flow [2024-06-27 16:40:06,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1493, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2024-06-27 16:40:06,795 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-27 16:40:06,795 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 1493 flow [2024-06-27 16:40:06,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:06,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:06,795 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 16:40:06,797 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 1 more)] === [2024-06-27 16:40:06,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1980914144, now seen corresponding path program 4 times [2024-06-27 16:40:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:06,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136223404] [2024-06-27 16:40:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:07,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136223404] [2024-06-27 16:40:07,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136223404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:07,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:07,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:40:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486311357] [2024-06-27 16:40:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:07,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:40:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:07,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:40:07,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:40:07,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:07,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 1493 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:07,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:07,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:07,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:10,213 INFO L124 PetriNetUnfolderBase]: 15275/21558 cut-off events. [2024-06-27 16:40:10,213 INFO L125 PetriNetUnfolderBase]: For 90488/90488 co-relation queries the response was YES. [2024-06-27 16:40:10,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78318 conditions, 21558 events. 15275/21558 cut-off events. For 90488/90488 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 122768 event pairs, 4866 based on Foata normal form. 2/21560 useless extension candidates. Maximal degree in co-relation 78282. Up to 11646 conditions per place. [2024-06-27 16:40:10,320 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 146 selfloop transitions, 36 changer transitions 17/200 dead transitions. [2024-06-27 16:40:10,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 200 transitions, 2202 flow [2024-06-27 16:40:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:40:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:40:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 16:40:10,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 16:40:10,321 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 1493 flow. Second operand 5 states and 125 transitions. [2024-06-27 16:40:10,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 200 transitions, 2202 flow [2024-06-27 16:40:10,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 200 transitions, 2072 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 16:40:10,676 INFO L231 Difference]: Finished difference. Result has 104 places, 139 transitions, 1495 flow [2024-06-27 16:40:10,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1495, PETRI_PLACES=104, PETRI_TRANSITIONS=139} [2024-06-27 16:40:10,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-27 16:40:10,676 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 139 transitions, 1495 flow [2024-06-27 16:40:10,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:10,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:10,677 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:10,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 16:40:10,677 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 1 more)] === [2024-06-27 16:40:10,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash 456723776, now seen corresponding path program 5 times [2024-06-27 16:40:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562011182] [2024-06-27 16:40:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:10,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:10,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562011182] [2024-06-27 16:40:10,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562011182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:10,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:10,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:40:10,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023464751] [2024-06-27 16:40:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:10,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:40:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:40:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:40:10,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:10,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 139 transitions, 1495 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:10,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:10,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:10,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:13,868 INFO L124 PetriNetUnfolderBase]: 15036/21181 cut-off events. [2024-06-27 16:40:13,868 INFO L125 PetriNetUnfolderBase]: For 80856/80856 co-relation queries the response was YES. [2024-06-27 16:40:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75929 conditions, 21181 events. 15036/21181 cut-off events. For 80856/80856 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 119996 event pairs, 5596 based on Foata normal form. 1/21182 useless extension candidates. Maximal degree in co-relation 75897. Up to 12191 conditions per place. [2024-06-27 16:40:14,039 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 135 selfloop transitions, 24 changer transitions 20/180 dead transitions. [2024-06-27 16:40:14,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 180 transitions, 1986 flow [2024-06-27 16:40:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:40:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:40:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-27 16:40:14,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448979591836735 [2024-06-27 16:40:14,040 INFO L175 Difference]: Start difference. First operand has 104 places, 139 transitions, 1495 flow. Second operand 5 states and 109 transitions. [2024-06-27 16:40:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 180 transitions, 1986 flow [2024-06-27 16:40:14,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 180 transitions, 1926 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 16:40:14,322 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 1431 flow [2024-06-27 16:40:14,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1431, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2024-06-27 16:40:14,322 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-27 16:40:14,322 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 1431 flow [2024-06-27 16:40:14,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:40:14,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:14,323 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:14,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 16:40:14,323 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 1 more)] === [2024-06-27 16:40:14,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -835994381, now seen corresponding path program 1 times [2024-06-27 16:40:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:14,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108056742] [2024-06-27 16:40:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:14,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:14,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108056742] [2024-06-27 16:40:14,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108056742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:14,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:14,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:40:14,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072161792] [2024-06-27 16:40:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:40:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:40:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:40:14,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:14,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 1431 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:14,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:14,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:17,006 INFO L124 PetriNetUnfolderBase]: 14680/20637 cut-off events. [2024-06-27 16:40:17,006 INFO L125 PetriNetUnfolderBase]: For 75348/75348 co-relation queries the response was YES. [2024-06-27 16:40:17,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71685 conditions, 20637 events. 14680/20637 cut-off events. For 75348/75348 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 115437 event pairs, 4933 based on Foata normal form. 56/20693 useless extension candidates. Maximal degree in co-relation 71655. Up to 19753 conditions per place. [2024-06-27 16:40:17,151 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 132 selfloop transitions, 9 changer transitions 15/157 dead transitions. [2024-06-27 16:40:17,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 157 transitions, 1752 flow [2024-06-27 16:40:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:40:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:40:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-06-27 16:40:17,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-06-27 16:40:17,153 INFO L175 Difference]: Start difference. First operand has 102 places, 135 transitions, 1431 flow. Second operand 4 states and 83 transitions. [2024-06-27 16:40:17,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 157 transitions, 1752 flow [2024-06-27 16:40:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 157 transitions, 1664 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 16:40:17,272 INFO L231 Difference]: Finished difference. Result has 93 places, 126 transitions, 1217 flow [2024-06-27 16:40:17,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1217, PETRI_PLACES=93, PETRI_TRANSITIONS=126} [2024-06-27 16:40:17,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-27 16:40:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 126 transitions, 1217 flow [2024-06-27 16:40:17,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:17,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:17,273 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 16:40:17,273 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -842224581, now seen corresponding path program 2 times [2024-06-27 16:40:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107578460] [2024-06-27 16:40:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107578460] [2024-06-27 16:40:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107578460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:17,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:17,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:40:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730805130] [2024-06-27 16:40:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:40:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:40:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:40:17,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:17,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 126 transitions, 1217 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:17,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:17,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:17,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:19,893 INFO L124 PetriNetUnfolderBase]: 14638/20617 cut-off events. [2024-06-27 16:40:19,894 INFO L125 PetriNetUnfolderBase]: For 61304/61304 co-relation queries the response was YES. [2024-06-27 16:40:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68636 conditions, 20617 events. 14638/20617 cut-off events. For 61304/61304 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 114865 event pairs, 9089 based on Foata normal form. 32/20649 useless extension candidates. Maximal degree in co-relation 68608. Up to 18747 conditions per place. [2024-06-27 16:40:20,033 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 151 selfloop transitions, 3 changer transitions 2/157 dead transitions. [2024-06-27 16:40:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 157 transitions, 1673 flow [2024-06-27 16:40:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:40:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:40:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-06-27 16:40:20,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336734693877551 [2024-06-27 16:40:20,034 INFO L175 Difference]: Start difference. First operand has 93 places, 126 transitions, 1217 flow. Second operand 4 states and 85 transitions. [2024-06-27 16:40:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 157 transitions, 1673 flow [2024-06-27 16:40:20,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 157 transitions, 1612 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 16:40:20,230 INFO L231 Difference]: Finished difference. Result has 94 places, 125 transitions, 1159 flow [2024-06-27 16:40:20,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1159, PETRI_PLACES=94, PETRI_TRANSITIONS=125} [2024-06-27 16:40:20,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-27 16:40:20,231 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 125 transitions, 1159 flow [2024-06-27 16:40:20,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:20,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:20,231 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:20,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 16:40:20,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:20,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:20,231 INFO L85 PathProgramCache]: Analyzing trace with hash -677609169, now seen corresponding path program 3 times [2024-06-27 16:40:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:20,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22456366] [2024-06-27 16:40:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:20,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:20,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:20,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22456366] [2024-06-27 16:40:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22456366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:20,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:20,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:40:20,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105570125] [2024-06-27 16:40:20,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:20,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:40:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:40:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:40:20,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:20,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 125 transitions, 1159 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:22,972 INFO L124 PetriNetUnfolderBase]: 13522/18979 cut-off events. [2024-06-27 16:40:22,973 INFO L125 PetriNetUnfolderBase]: For 50647/50647 co-relation queries the response was YES. [2024-06-27 16:40:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62158 conditions, 18979 events. 13522/18979 cut-off events. For 50647/50647 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 103297 event pairs, 8901 based on Foata normal form. 34/19013 useless extension candidates. Maximal degree in co-relation 62130. Up to 18747 conditions per place. [2024-06-27 16:40:23,100 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 116 selfloop transitions, 0 changer transitions 17/134 dead transitions. [2024-06-27 16:40:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 1397 flow [2024-06-27 16:40:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:40:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:40:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-27 16:40:23,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 16:40:23,101 INFO L175 Difference]: Start difference. First operand has 94 places, 125 transitions, 1159 flow. Second operand 4 states and 70 transitions. [2024-06-27 16:40:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 1397 flow [2024-06-27 16:40:23,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 1390 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:40:23,240 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 1022 flow [2024-06-27 16:40:23,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-06-27 16:40:23,241 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-27 16:40:23,241 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 1022 flow [2024-06-27 16:40:23,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:40:23,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:23,241 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:23,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 16:40:23,241 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:23,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1233052090, now seen corresponding path program 1 times [2024-06-27 16:40:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102350516] [2024-06-27 16:40:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102350516] [2024-06-27 16:40:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102350516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:40:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672621973] [2024-06-27 16:40:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:40:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:40:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:40:23,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:23,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 1022 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-27 16:40:23,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:23,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:23,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:26,289 INFO L124 PetriNetUnfolderBase]: 15638/21971 cut-off events. [2024-06-27 16:40:26,290 INFO L125 PetriNetUnfolderBase]: For 62161/62161 co-relation queries the response was YES. [2024-06-27 16:40:26,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70653 conditions, 21971 events. 15638/21971 cut-off events. For 62161/62161 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 121396 event pairs, 9030 based on Foata normal form. 512/22483 useless extension candidates. Maximal degree in co-relation 70626. Up to 16702 conditions per place. [2024-06-27 16:40:26,411 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 137 selfloop transitions, 16 changer transitions 1/155 dead transitions. [2024-06-27 16:40:26,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 1558 flow [2024-06-27 16:40:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:40:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:40:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-27 16:40:26,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 16:40:26,412 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 1022 flow. Second operand 3 states and 73 transitions. [2024-06-27 16:40:26,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 1558 flow [2024-06-27 16:40:26,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 155 transitions, 1502 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 16:40:26,471 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 1035 flow [2024-06-27 16:40:26,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1035, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2024-06-27 16:40:26,471 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-27 16:40:26,472 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 1035 flow [2024-06-27 16:40:26,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-27 16:40:26,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:26,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:26,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 16:40:26,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:26,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1665527274, now seen corresponding path program 1 times [2024-06-27 16:40:26,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:26,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606845677] [2024-06-27 16:40:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-06-27 16:40:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606845677] [2024-06-27 16:40:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606845677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:26,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:40:26,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535159392] [2024-06-27 16:40:26,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:40:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:40:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:40:26,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:26,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 1035 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-06-27 16:40:26,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:26,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:29,845 INFO L124 PetriNetUnfolderBase]: 17548/24751 cut-off events. [2024-06-27 16:40:29,845 INFO L125 PetriNetUnfolderBase]: For 64723/64723 co-relation queries the response was YES. [2024-06-27 16:40:29,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79166 conditions, 24751 events. 17548/24751 cut-off events. For 64723/64723 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 138978 event pairs, 9764 based on Foata normal form. 573/25324 useless extension candidates. Maximal degree in co-relation 79139. Up to 19079 conditions per place. [2024-06-27 16:40:29,995 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 139 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2024-06-27 16:40:29,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1624 flow [2024-06-27 16:40:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:40:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:40:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-27 16:40:29,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 16:40:29,996 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 1035 flow. Second operand 3 states and 72 transitions. [2024-06-27 16:40:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1624 flow [2024-06-27 16:40:30,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 156 transitions, 1587 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:40:30,096 INFO L231 Difference]: Finished difference. Result has 90 places, 118 transitions, 1055 flow [2024-06-27 16:40:30,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1055, PETRI_PLACES=90, PETRI_TRANSITIONS=118} [2024-06-27 16:40:30,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2024-06-27 16:40:30,096 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 118 transitions, 1055 flow [2024-06-27 16:40:30,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-06-27 16:40:30,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:30,097 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:30,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 16:40:30,097 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:30,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash 346810959, now seen corresponding path program 1 times [2024-06-27 16:40:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079445459] [2024-06-27 16:40:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-06-27 16:40:30,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:30,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079445459] [2024-06-27 16:40:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079445459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:40:30,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:40:30,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:40:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682895230] [2024-06-27 16:40:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:40:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:40:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:30,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:40:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:40:30,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:30,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 118 transitions, 1055 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:40:30,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:30,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:40:33,875 INFO L124 PetriNetUnfolderBase]: 20568/29067 cut-off events. [2024-06-27 16:40:33,876 INFO L125 PetriNetUnfolderBase]: For 79180/79180 co-relation queries the response was YES. [2024-06-27 16:40:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93079 conditions, 29067 events. 20568/29067 cut-off events. For 79180/79180 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 167693 event pairs, 12209 based on Foata normal form. 592/29659 useless extension candidates. Maximal degree in co-relation 93052. Up to 23070 conditions per place. [2024-06-27 16:40:34,075 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 130 selfloop transitions, 15 changer transitions 1/147 dead transitions. [2024-06-27 16:40:34,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 147 transitions, 1531 flow [2024-06-27 16:40:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:40:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:40:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-27 16:40:34,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 16:40:34,076 INFO L175 Difference]: Start difference. First operand has 90 places, 118 transitions, 1055 flow. Second operand 3 states and 71 transitions. [2024-06-27 16:40:34,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 147 transitions, 1531 flow [2024-06-27 16:40:34,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:40:34,152 INFO L231 Difference]: Finished difference. Result has 92 places, 119 transitions, 1108 flow [2024-06-27 16:40:34,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1108, PETRI_PLACES=92, PETRI_TRANSITIONS=119} [2024-06-27 16:40:34,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-27 16:40:34,153 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 119 transitions, 1108 flow [2024-06-27 16:40:34,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:40:34,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:40:34,153 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:40:34,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 16:40:34,154 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:40:34,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:40:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash 450353717, now seen corresponding path program 1 times [2024-06-27 16:40:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:40:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681856649] [2024-06-27 16:40:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:40:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:40:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:40:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681856649] [2024-06-27 16:40:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681856649] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:40:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943798935] [2024-06-27 16:40:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:40:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:40:40,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:40:40,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:40:40,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:40:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:40:41,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 55 conjunts are in the unsatisfiable core [2024-06-27 16:40:41,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:40:43,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:40:43,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 269 treesize of output 333 [2024-06-27 16:40:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:44,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:40:47,433 INFO L349 Elim1Store]: treesize reduction 32, result has 71.7 percent of original size [2024-06-27 16:40:47,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 210 [2024-06-27 16:40:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:40:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943798935] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:40:48,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:40:48,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 12, 12] total 49 [2024-06-27 16:40:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784876677] [2024-06-27 16:40:48,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:40:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-06-27 16:40:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:40:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-06-27 16:40:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2108, Unknown=0, NotChecked=0, Total=2352 [2024-06-27 16:40:48,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:40:48,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 119 transitions, 1108 flow. Second operand has 49 states, 49 states have (on average 6.551020408163265) internal successors, (321), 49 states have internal predecessors, (321), 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) [2024-06-27 16:40:48,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:40:48,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:40:48,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand